﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xsi:schemaLocation="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2010v3.4">
  <ReturnHeader binaryAttachmentCount="0">
    <Timestamp>2011-08-09T15:49:37-05:00</Timestamp>
    <TaxPeriodEndDate>2010-12-31</TaxPeriodEndDate>
    <PreparerFirm>
      <PreparerFirmBusinessName>
        <BusinessNameLine1>ARONSON LLC</BusinessNameLine1>
      </PreparerFirmBusinessName>
      <PreparerFirmUSAddress>
        <AddressLine1>805 KING FARM BLVD 3RD FLOOR</AddressLine1>
        <City>ROCKVILLE</City>
        <State>MD</State>
        <ZIPCode>20850</ZIPCode>
      </PreparerFirmUSAddress>
    </PreparerFirm>
    <ReturnType>990</ReturnType>
    <TaxPeriodBeginDate>2010-01-01</TaxPeriodBeginDate>
    <Filer>
      <EIN>521794095</EIN>
      <Name>
        <BusinessNameLine1>SOLAR ELECTRIC POWER ASSOCIATION</BusinessNameLine1>
      </Name>
      <NameControl>SOLA</NameControl>
      <Phone>2028570898</Phone>
      <USAddress>
        <AddressLine1>1220 19th Street NW</AddressLine1>
        <City>WASHINGTON</City>
        <State>DC</State>
        <ZIPCode>20036</ZIPCode>
      </USAddress>
    </Filer>
    <Officer>
      <Name>mark kimble</Name>
      <Title>director of operations</Title>
      <DateSigned>2011-08-05</DateSigned>
      <AuthorizeThirdParty>true</AuthorizeThirdParty>
    </Officer>
    <Preparer>
      <Name>Craig Stevens</Name>
      <Phone>3012316200</Phone>
    </Preparer>
    <TaxYear>2010</TaxYear>
    <BuildTS>2016-02-24 21:20:13Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCount="8">
    <IRS990 documentId="IRS990" referenceDocumentId="IRS990ScheduleO">
      <NameOfPrincipalOfficerPerson>JULIA HAMM</NameOfPrincipalOfficerPerson>
      <AddressPrincipalOfficerUS>
        <AddressLine1>1220 19TH STREET NW SUITE 800</AddressLine1>
        <City>WASHINGTON</City>
        <State>DC</State>
        <ZIPCode>20036</ZIPCode>
      </AddressPrincipalOfficerUS>
      <GrossReceipts>6570539</GrossReceipts>
      <GroupReturnForAffiliates>false</GroupReturnForAffiliates>
      <Organization501c3>X</Organization501c3>
      <WebSite>SOLARELECTRICPOWER.ORG</WebSite>
      <TypeOfOrganizationCorporation>X</TypeOfOrganizationCorporation>
      <YearFormation>1992</YearFormation>
      <StateLegalDomicile>DC</StateLegalDomicile>
      <ActivityOrMissionDescription>SEPA'S MISSION IS TO FACILITATE THE USE AND INTEGRATION OF SOLAR ELECTRIC POWER BY UTILITIES, ELECTRIC SERVICE PROVIDERS, AND THEIR CUSTOMERS.</ActivityOrMissionDescription>
      <NbrVotingMembersGoverningBody>20</NbrVotingMembersGoverningBody>
      <NbrIndependentVotingMembers>20</NbrIndependentVotingMembers>
      <TotalNbrEmployees>31</TotalNbrEmployees>
      <TotalNbrVolunteers>0</TotalNbrVolunteers>
      <TotalGrossUBI>0</TotalGrossUBI>
      <ContributionsGrantsPriorYear>417889</ContributionsGrantsPriorYear>
      <ContributionsGrantsCurrentYear>299423</ContributionsGrantsCurrentYear>
      <ProgramServiceRevenuePriorYear>12525622</ProgramServiceRevenuePriorYear>
      <ProgramServiceRevenueCY>6246623</ProgramServiceRevenueCY>
      <InvestmentIncomePriorYear>59266</InvestmentIncomePriorYear>
      <InvestmentIncomeCurrentYear>24493</InvestmentIncomeCurrentYear>
      <OtherRevenuePriorYear>122576</OtherRevenuePriorYear>
      <OtherRevenueCurrentYear>0</OtherRevenueCurrentYear>
      <TotalRevenuePriorYear>13125353</TotalRevenuePriorYear>
      <TotalRevenueCurrentYear>6570539</TotalRevenueCurrentYear>
      <GrantsAndSimilarAmntsPriorYear>33363</GrantsAndSimilarAmntsPriorYear>
      <GrantsAndSimilarAmntsCY>49878</GrantsAndSimilarAmntsCY>
      <BenefitsPaidToMembersPriorYear>0</BenefitsPaidToMembersPriorYear>
      <BenefitsPaidToMembersCY>0</BenefitsPaidToMembersCY>
      <SalariesEtcPriorYear>1757661</SalariesEtcPriorYear>
      <SalariesEtcCurrentYear>2472873</SalariesEtcCurrentYear>
      <TotalProfFundrsngExpPriorYear>0</TotalProfFundrsngExpPriorYear>
      <TotalProfFundrsngExpCY>0</TotalProfFundrsngExpCY>
      <TotalFundrsngExpCurrentYear>2870</TotalFundrsngExpCurrentYear>
      <OtherExpensePriorYear>8726406</OtherExpensePriorYear>
      <OtherExpensesCurrentYear>1852030</OtherExpensesCurrentYear>
      <TotalExpensesPriorYear>10517430</TotalExpensesPriorYear>
      <TotalExpensesCurrentYear>4374781</TotalExpensesCurrentYear>
      <RevenuesLessExpensesPriorYear>2607923</RevenuesLessExpensesPriorYear>
      <RevenuesLessExpensesCY>2195758</RevenuesLessExpensesCY>
      <TotalAssetsBOY>11224700</TotalAssetsBOY>
      <TotalAssetsEOY>10022078</TotalAssetsEOY>
      <TotalLiabilitiesBOY>4711401</TotalLiabilitiesBOY>
      <TotalLiabilitiesEOY>1315652</TotalLiabilitiesEOY>
      <NetAssetsOrFundBalancesBOY>6513299</NetAssetsOrFundBalancesBOY>
      <NetAssetsOrFundBalancesEOY>8706426</NetAssetsOrFundBalancesEOY>
      <MissionDescription>SEPA IS A NONPROFIT ORGANIZATION WITH UTILITY, ELECTRIC SERVICE PROVIDER, MANUFACTURER, INSTALLER, GOVERNMENT AND RESEARCH MEMBERS. SEPA'S MISSION IS TO FACILITATE THE USE AND INTEGRATION OF SOLAR ELECTRIC POWER BY UTILITIES, ELECTRIC SERVICE PROVIDERS, AND THEIR CUSTOMERS. TO ACHIEVE THIS MISSION, SEPA 1. FACILITATES AND SUPPORTS THE CREATION OF NEW BUSINESS MODELS THAT WILL ENCOURAGE UTILITIES TO INTEGRATE SOLAR POWER INTO THEIR PORTFOLIO; 2. PROVIDES INFORMATION, ANALYSIS, THAT RESULT IN INCREASED SOLAR AND UTILITY INDUSTRY KNOWLEDGE ON THE SUBJECT OF SOLAR TECHNOLOGIES, PROGRAMS AND POLICIES; 3. CONDUCT FORUMS TO ALLOW PLAYERS IN EACH INDUSTRY TO DEVELOP RELATIONSHIPS WITH ONE ANOTHER AND COLLABORATIVELY CREATE AND IMPLEMENT INNOVATIVE SOLUTIONS, AND 4. CONNECT THE UTILITY/SOLAR COMMUNITY WITH THE BROADER NATIONAL AND INTERNATIONAL ENERGY AND BUSINESS COMMUNITY.</MissionDescription>
      <SignificantNewProgramServices>false</SignificantNewProgramServices>
      <SignificantChange>false</SignificantChange>
      <Expense>2310815</Expense>
      <Grants>49878</Grants>
      <Revenue>1035026</Revenue>
      <Description>Outreach and Interaction - Program seeks to stimulate the increased utility adoption and integration of solar electric technologies on either side of the meter by providing a variety of support services and information to utilities throughout the United States. The expected outcomes include the development of new utility solar programs and the expansion of existing utility solar programs, increased utility and customer-owned solar installations, and increased general awareness and understanding of the solar technologies and applications by utility employees.</Description>
      <Activity2>
        <Expense>1126551</Expense>
        <Revenue>5480008</Revenue>
        <Description>Education and Research - Performs research and conducts fact finding missions to help educate power producers on the integration of solar technology to the US Market. Education on solar technology is done through on-line teaching (webinars), regional workshops, seminars, an annual conference and training courses. Research materials and information on solar energy are provided through on-line "Solar Tool Kit" and provides written reports on new solar business models and integration practices.</Description>
      </Activity2>
      <TotalProgramServiceExpense>3437366</TotalProgramServiceExpense>
      <DescribedIn501C3 referenceDocumentId="IRS990ScheduleA">true</DescribedIn501C3>
      <ScheduleBRequired referenceDocumentId="IRS990ScheduleB">true</ScheduleBRequired>
      <PoliticalActivities>false</PoliticalActivities>
      <LobbyingActivities>false</LobbyingActivities>
      <SubjectToProxyTax>false</SubjectToProxyTax>
      <DonorAdvisedFunds referenceDocumentId="IRS990ScheduleD">false</DonorAdvisedFunds>
      <ConservationEasements referenceDocumentId="IRS990ScheduleD">false</ConservationEasements>
      <CollectionsOfArt referenceDocumentId="IRS990ScheduleD">false</CollectionsOfArt>
      <CreditCounseling referenceDocumentId="IRS990ScheduleD">false</CreditCounseling>
      <TermOrPermanentEndowments referenceDocumentId="IRS990ScheduleD">false</TermOrPermanentEndowments>
      <ReportLandBldgEquip referenceDocumentId="IRS990ScheduleD">true</ReportLandBldgEquip>
      <ReportInvestOthSecurities referenceDocumentId="IRS990ScheduleD">true</ReportInvestOthSecurities>
      <ReportProgRelInvest referenceDocumentId="IRS990ScheduleD">false</ReportProgRelInvest>
      <ReportOtherAssets referenceDocumentId="IRS990ScheduleD">true</ReportOtherAssets>
      <ReportOtherLiabilities referenceDocumentId="IRS990ScheduleD">true</ReportOtherLiabilities>
      <ReportFin48Footnote referenceDocumentId="IRS990ScheduleD">false</ReportFin48Footnote>
      <IndependentAuditFinancialStmt referenceDocumentId="IRS990ScheduleD">true</IndependentAuditFinancialStmt>
      <ConsolidatedAuditFinancialStmt referenceDocumentId="IRS990ScheduleD">false</ConsolidatedAuditFinancialStmt>
      <School>false</School>
      <ForeignOffice>false</ForeignOffice>
      <ForeignActivities>false</ForeignActivities>
      <MoreThan5000KToOrganizations>false</MoreThan5000KToOrganizations>
      <MoreThan5000KToIndividuals>false</MoreThan5000KToIndividuals>
      <ProfessionalFundraising>false</ProfessionalFundraising>
      <FundraisingActivities>false</FundraisingActivities>
      <Gaming>false</Gaming>
      <Hospital>false</Hospital>
      <GrantsToOrganizations referenceDocumentId="IRS990ScheduleI">false</GrantsToOrganizations>
      <GrantsToIndividuals referenceDocumentId="IRS990ScheduleI">true</GrantsToIndividuals>
      <ScheduleJRequired referenceDocumentId="IRS990ScheduleJ">true</ScheduleJRequired>
      <TaxExemptBonds>false</TaxExemptBonds>
      <ExcessBenefitTransaction>false</ExcessBenefitTransaction>
      <PriorExcessBenefitTransaction>false</PriorExcessBenefitTransaction>
      <LoanToOfficerOrDQP>false</LoanToOfficerOrDQP>
      <GrantToRelatedPerson>false</GrantToRelatedPerson>
      <BsnssRltnshpWithOrganization>false</BsnssRltnshpWithOrganization>
      <BsnssRltnshpThruFamilyMember>false</BsnssRltnshpThruFamilyMember>
      <OfficerEntityWithBsnssRltnshp>false</OfficerEntityWithBsnssRltnshp>
      <DeductibleNonCashContributions>false</DeductibleNonCashContributions>
      <DeductibleContributionsOfArt>false</DeductibleContributionsOfArt>
      <Terminated>false</Terminated>
      <PartialLiquidation>false</PartialLiquidation>
      <DisregardedEntity referenceDocumentId="IRS990ScheduleR">false</DisregardedEntity>
      <RelatedEntity referenceDocumentId="IRS990ScheduleR">true</RelatedEntity>
      <RelatedOrgControlledEntity>false</RelatedOrgControlledEntity>
      <TransactionRelatedEntity referenceDocumentId="IRS990ScheduleR">false</TransactionRelatedEntity>
      <TransfersToExemptNonChrtblOrg referenceDocumentId="IRS990ScheduleR">false</TransfersToExemptNonChrtblOrg>
      <ActivitiesConductedPartnership referenceDocumentId="IRS990ScheduleR">false</ActivitiesConductedPartnership>
      <ScheduleORequired>true</ScheduleORequired>
      <NumberFormsTransmittedWith1096>15</NumberFormsTransmittedWith1096>
      <NumberW2GIncluded>0</NumberW2GIncluded>
      <ComplianceWithBackupWitholding>true</ComplianceWithBackupWitholding>
      <NumberOfEmployees>31</NumberOfEmployees>
      <EmploymentTaxReturnsFiled>true</EmploymentTaxReturnsFiled>
      <UnrelatedBusinessIncome>false</UnrelatedBusinessIncome>
      <ForeignFinancialAccount>false</ForeignFinancialAccount>
      <ProhibitedTaxShelterTrans>false</ProhibitedTaxShelterTrans>
      <TaxablePartyNotification>false</TaxablePartyNotification>
      <NonDeductibleContributions>false</NonDeductibleContributions>
      <QuidProQuoContributions>true</QuidProQuoContributions>
      <QuidProQuoDisclosure>true</QuidProQuoDisclosure>
      <Form8282PropertyDisposedOf>false</Form8282PropertyDisposedOf>
      <FundsToPayPremiums>false</FundsToPayPremiums>
      <PremiumsPaid>false</PremiumsPaid>
      <IndoorTanningServices>false</IndoorTanningServices>
      <InfoInScheduleOPartVI>X</InfoInScheduleOPartVI>
      <NbrVotingGoverningBodyMembers>20</NbrVotingGoverningBodyMembers>
      <NumberIndependentVotingMembers>20</NumberIndependentVotingMembers>
      <FamilyOrBusinessRelationship>false</FamilyOrBusinessRelationship>
      <DelegationOfManagementDuties>false</DelegationOfManagementDuties>
      <ChangesToOrganizingDocs>true</ChangesToOrganizingDocs>
      <MaterialDiversionOrMisuse>false</MaterialDiversionOrMisuse>
      <MembersOrStockholders>true</MembersOrStockholders>
      <ElectionOfBoardMembers>true</ElectionOfBoardMembers>
      <DecisionsSubjectToApproval>true</DecisionsSubjectToApproval>
      <MinutesOfGoverningBody>true</MinutesOfGoverningBody>
      <MinutesOfCommittees>true</MinutesOfCommittees>
      <OfficerMailingAddress>false</OfficerMailingAddress>
      <LocalChapters>false</LocalChapters>
      <Form990ProvidedToGoverningBody>true</Form990ProvidedToGoverningBody>
      <ConflictOfInterestPolicy>true</ConflictOfInterestPolicy>
      <AnnualDisclosureCoveredPersons>true</AnnualDisclosureCoveredPersons>
      <RegularMonitoringEnforcement>true</RegularMonitoringEnforcement>
      <WhistleblowerPolicy>true</WhistleblowerPolicy>
      <DocumentRetentionPolicy>true</DocumentRetentionPolicy>
      <CompensationProcessCEO>true</CompensationProcessCEO>
      <CompensationProcessOther>true</CompensationProcessOther>
      <InvestmentInJointVenture>false</InvestmentInJointVenture>
      <StatesWhereCopyOfReturnIsFiled>CA</StatesWhereCopyOfReturnIsFiled>
      <StatesWhereCopyOfReturnIsFiled>DC</StatesWhereCopyOfReturnIsFiled>
      <StatesWhereCopyOfReturnIsFiled>FL</StatesWhereCopyOfReturnIsFiled>
      <UponRequest>X</UponRequest>
      <TheBooksAreInCareOf>
        <NamePerson>MARK KIMBLE</NamePerson>
        <TelephoneNumber>2028570898</TelephoneNumber>
        <AddressUS>
          <AddressLine1>1220 19TH STREET NW SUITE 800</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20036</ZIPCode>
        </AddressUS>
      </TheBooksAreInCareOf>
      <Form990PartVIISectionA>
        <NamePerson>DAVID RUBIN</NamePerson>
        <Title>CHAIRMAN OF THE BOARD</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CARL SIEGRIST</NamePerson>
        <Title>VICE CHAIRMAN OF THE BOARD</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ERVAN HANCOCK</NamePerson>
        <Title>SECRETARY/TREASURER</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>LISA FRANTZIS</NamePerson>
        <Title>BOARD MEMBER</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JON BERTOLINO</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>TOBIN BOOTH</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MATT CHENEY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MARK DOUGHERTY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>TOM DYER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ALEX KIM</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>PAMELA NEWELL</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ED REGAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>OWEN SMITH</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>DAVID SPRADLIN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JUDY STALEY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JENNIFER SZARO</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JANET GAGNON</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ERAN MAHRER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>LUIS REYES</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>THERESA WILLIAMS</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JULIA HAMM</NamePerson>
        <Title>PRESIDENT AND CEO</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>250000</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>34755</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MARK KIMBLE</NamePerson>
        <Title>VP FINANCE &amp; OPERATIONS</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>132840</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>20714</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CHRISTY HERIG</NamePerson>
        <Title>DIRECTOR OF TECHNICAL SERVICES</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>140460</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>15015</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>EMILY EASLEY</NamePerson>
        <Title>DIRECTOR - MEMBERSHIP RELATION</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>126840</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>15039</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>KIMBERLY KIENER</NamePerson>
        <Title>REGIONAL DIRECTOR - WEST</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>127500</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>18824</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>SANDRA BURTON</NamePerson>
        <Title>REGIONAL DIRECTOR (EAST)</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>125000</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>24951</OtherCompensation>
      </Form990PartVIISectionA>
      <TotalReportableCompFromOrg>902640</TotalReportableCompFromOrg>
      <TotalReportableCompFrmRltdOrgs>0</TotalReportableCompFrmRltdOrgs>
      <TotalOtherCompensation>129298</TotalOtherCompensation>
      <NumberIndividualsGT100K>9</NumberIndividualsGT100K>
      <FormersListed>false</FormersListed>
      <TotalCompGT150K>true</TotalCompGT150K>
      <CompensationFromOtherSources>false</CompensationFromOtherSources>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>REGENCY COMMERCIAL CONSTRUCTION</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>12300 KILN COURT SUITE F</AddressLine1>
            <City>BELTSVILLE</City>
            <State>MD</State>
            <ZIPCode>20705</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>CONSTRUCTION</DescriptionOfServices>
        <Compensation>537332</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>THE FAIRMONT HOTEL</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>170 S MARKET STREET</AddressLine1>
            <City>SAN JOSE</City>
            <State>CA</State>
            <ZIPCode>95113</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>HOTEL SERVICES</DescriptionOfServices>
        <Compensation>381888</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>WASHINGTON WORKPLACE</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>2300 SOUTH 9TH STREET</AddressLine1>
            <City>ARLINGTON</City>
            <State>VA</State>
            <ZIPCode>22204</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>OFFICE FURNISHING</DescriptionOfServices>
        <Compensation>150212</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>CAREFIRST BLUECROSS BLUESHIELD</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>PO BOX 79749</AddressLine1>
            <City>BALTIMORE</City>
            <State>MD</State>
            <ZIPCode>212790749</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>HEALTH BENEFITS</DescriptionOfServices>
        <Compensation>148471</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>RAFFA PC</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>1899 L STREET NW</AddressLine1>
            <City>WASHINGTON</City>
            <State>DC</State>
            <ZIPCode>20036</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>ACCOUNTING/HR</DescriptionOfServices>
        <Compensation>151067</Compensation>
      </ContractorCompensation>
      <NumberOfContractorsGT100K>9</NumberOfContractorsGT100K>
      <GovernmentGrants>239423</GovernmentGrants>
      <AllOtherContributions>60000</AllOtherContributions>
      <TotalContributions>299423</TotalContributions>
      <ProgramServiceRevenue>
        <Description>SPONSORSHIP</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>249000</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>249000</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>MEMBERSHIP DUES</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>773588</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>773588</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>REGISTRATION</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>136382</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>136382</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>SOLAR ENERGY TRADE SHOWS</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>4508520</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>4508520</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>CONSULTING</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>511056</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>511056</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <TotalOthProgramServiceRevenue>
        <TotalRevenueColumn>68077</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>68077</RelatedOrExemptFunctionIncome>
      </TotalOthProgramServiceRevenue>
      <TotalProgramServiceRevenue>6246623</TotalProgramServiceRevenue>
      <InvestmentIncome>
        <TotalRevenueColumn>24493</TotalRevenueColumn>
        <ExclusionAmount>24493</ExclusionAmount>
      </InvestmentIncome>
      <IncomeFromInvestBondProceeds>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </IncomeFromInvestBondProceeds>
      <RoyaltiesRevenue>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </RoyaltiesRevenue>
      <NetGainOrLossInvestments>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetGainOrLossInvestments>
      <NetIncomeFromFundraisingEvents>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromFundraisingEvents>
      <NetIncomeFromGaming>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromGaming>
      <NetIncomeOrLoss>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeOrLoss>
      <TotalOtherRevenue>0</TotalOtherRevenue>
      <TotalRevenue>
        <TotalRevenueColumn>6570539</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>6246623</RelatedOrExemptFunctionIncome>
        <ExclusionAmount>24493</ExclusionAmount>
      </TotalRevenue>
      <GrantsToDomesticOrgs>
        <Total>0</Total>
      </GrantsToDomesticOrgs>
      <GrantsToDomesticIndividuals>
        <Total>49878</Total>
        <ProgramServices>49878</ProgramServices>
      </GrantsToDomesticIndividuals>
      <ForeignGrants>
        <Total>0</Total>
      </ForeignGrants>
      <BenefitsToMembers>
        <Total>0</Total>
      </BenefitsToMembers>
      <CompCurrentOfficersDirectors>
        <Total>284755</Total>
        <ProgramServices>284755</ProgramServices>
      </CompCurrentOfficersDirectors>
      <CompDisqualPersons>
        <Total>0</Total>
      </CompDisqualPersons>
      <OtherSalariesAndWages>
        <Total>1754340</Total>
        <ProgramServices>1156387</ProgramServices>
        <ManagementAndGeneral>596153</ManagementAndGeneral>
        <Fundraising>1800</Fundraising>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>76350</Total>
        <ProgramServices>56401</ProgramServices>
        <ManagementAndGeneral>19846</ManagementAndGeneral>
        <Fundraising>103</Fundraising>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>210143</Total>
        <ProgramServices>148407</ProgramServices>
        <ManagementAndGeneral>61550</ManagementAndGeneral>
        <Fundraising>186</Fundraising>
      </OtherEmployeeBenefits>
      <PayrollTaxes>
        <Total>147285</Total>
        <ProgramServices>103094</ProgramServices>
        <ManagementAndGeneral>44071</ManagementAndGeneral>
        <Fundraising>120</Fundraising>
      </PayrollTaxes>
      <FeesForServicesManagement>
        <Total>0</Total>
      </FeesForServicesManagement>
      <FeesForServicesLegal>
        <Total>27294</Total>
        <ManagementAndGeneral>27294</ManagementAndGeneral>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>119695</Total>
        <ManagementAndGeneral>119695</ManagementAndGeneral>
      </FeesForServicesAccounting>
      <FeesForServicesLobbying>
        <Total>0</Total>
      </FeesForServicesLobbying>
      <FeesForServicesProfFundraising>
        <Total>0</Total>
      </FeesForServicesProfFundraising>
      <FeesForServicesInvstMgmntFees>
        <Total>0</Total>
      </FeesForServicesInvstMgmntFees>
      <FeesForServicesOther>
        <Total>265197</Total>
        <ProgramServices>218848</ProgramServices>
        <ManagementAndGeneral>46349</ManagementAndGeneral>
      </FeesForServicesOther>
      <Advertising>
        <Total>209024</Total>
        <ProgramServices>209024</ProgramServices>
      </Advertising>
      <OfficeExpenses>
        <Total>85844</Total>
        <ProgramServices>19896</ProgramServices>
        <ManagementAndGeneral>65948</ManagementAndGeneral>
      </OfficeExpenses>
      <InformationTechnology>
        <Total>125324</Total>
        <ProgramServices>1138</ProgramServices>
        <ManagementAndGeneral>124186</ManagementAndGeneral>
      </InformationTechnology>
      <Royalties>
        <Total>0</Total>
      </Royalties>
      <Occupancy>
        <Total>271407</Total>
        <ManagementAndGeneral>271407</ManagementAndGeneral>
      </Occupancy>
      <Travel>
        <Total>258652</Total>
        <ProgramServices>208352</ProgramServices>
        <ManagementAndGeneral>50300</ManagementAndGeneral>
      </Travel>
      <TravelEntrtnmntPublicOfficials>
        <Total>0</Total>
      </TravelEntrtnmntPublicOfficials>
      <ConferencesMeetings>
        <Total>147563</Total>
        <ProgramServices>144871</ProgramServices>
        <ManagementAndGeneral>2692</ManagementAndGeneral>
      </ConferencesMeetings>
      <Interest>
        <Total>0</Total>
      </Interest>
      <PaymentsToAffiliates>
        <Total>0</Total>
      </PaymentsToAffiliates>
      <DepreciationDepletion>
        <Total>146139</Total>
        <ManagementAndGeneral>146139</ManagementAndGeneral>
      </DepreciationDepletion>
      <Insurance>
        <Total>10554</Total>
        <ManagementAndGeneral>10554</ManagementAndGeneral>
      </Insurance>
      <OtherExpenses>
        <Description>HR AND RECRUITMENT</Description>
        <Total>68068</Total>
        <ManagementAndGeneral>68068</ManagementAndGeneral>
      </OtherExpenses>
      <OtherExpenses>
        <Description>BANK AND CREDIT CARD FEES</Description>
        <Total>22695</Total>
        <ManagementAndGeneral>22695</ManagementAndGeneral>
      </OtherExpenses>
      <OtherExpenses>
        <Description>DESIGN &amp; PRINTING</Description>
        <Total>8882</Total>
        <ProgramServices>8882</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>PROFESSIONAL DEVELOPMENT</Description>
        <Total>29601</Total>
        <ProgramServices>365</ProgramServices>
        <ManagementAndGeneral>29236</ManagementAndGeneral>
      </OtherExpenses>
      <OtherExpenses>
        <Description>DUES &amp; SUBSCRIPTIONS</Description>
        <Total>56091</Total>
        <ProgramServices>49193</ProgramServices>
        <ManagementAndGeneral>6898</ManagementAndGeneral>
      </OtherExpenses>
      <TotalFunctionalExpenses>
        <Total>4374781</Total>
        <ProgramServices>3437366</ProgramServices>
        <ManagementAndGeneral>934545</ManagementAndGeneral>
        <Fundraising>2870</Fundraising>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>873914</BOY>
        <EOY>459884</EOY>
      </CashNonInterestBearing>
      <SavingsAndTempCashInvestments>
        <BOY>9217986</BOY>
        <EOY>3242591</EOY>
      </SavingsAndTempCashInvestments>
      <AccountsReceivable>
        <BOY>212555</BOY>
        <EOY>224998</EOY>
      </AccountsReceivable>
      <PrepaidExpensesDeferredCharges>
        <BOY>15179</BOY>
        <EOY>7552</EOY>
      </PrepaidExpensesDeferredCharges>
      <LandBuildingsEquipmentBasis>1260713</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>211992</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
        <BOY>237533</BOY>
        <EOY>1048721</EOY>
      </LandBuildingsEquipmentBasisNet>
      <InvestmentsOtherSecurities>
        <BOY>475813</BOY>
        <EOY>2179680</EOY>
      </InvestmentsOtherSecurities>
      <InvestmentsProgramRelated>
        <BOY>100000</BOY>
        <EOY>100000</EOY>
      </InvestmentsProgramRelated>
      <OtherAssetsTotal>
        <BOY>91720</BOY>
        <EOY>2758652</EOY>
      </OtherAssetsTotal>
      <TotalAssets>
        <BOY>11224700</BOY>
        <EOY>10022078</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>751766</BOY>
        <EOY>318205</EOY>
      </AccountsPayableAccruedExpenses>
      <DeferredRevenue>
        <BOY>161750</BOY>
        <EOY>323063</EOY>
      </DeferredRevenue>
      <OtherLiabilities>
        <BOY>3797885</BOY>
        <EOY>674384</EOY>
      </OtherLiabilities>
      <TotalLiabilities>
        <BOY>4711401</BOY>
        <EOY>1315652</EOY>
      </TotalLiabilities>
      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>6450299</BOY>
        <EOY>8646426</EOY>
      </UnrestrictedNetAssets>
      <TemporarilyRestrictedNetAssets>
        <BOY>63000</BOY>
        <EOY>60000</EOY>
      </TemporarilyRestrictedNetAssets>
      <TotalNetAssetsFundBalances>
        <BOY>6513299</BOY>
        <EOY>8706426</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>11224700</BOY>
        <EOY>10022078</EOY>
      </TotalLiabNetAssetsFundBalances>
      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
      <ReconcilationRevenueExpenses>2195758</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>-2631</ReconcilationOtherChanges>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>false</AccountantCompileOrReview>
      <FSAudited>true</FSAudited>
      <AuditCommittee>true</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>false</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA">
      <PubliclySupportedOrg509a2>X</PubliclySupportedOrg509a2>
      <GiftsGrantsContribReceived509>
        <CurrentTaxYearMinus4Years>207395</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>256563</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>416029</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>417889</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>296438</CurrentTaxYear>
        <Total>1594314</Total>
      </GiftsGrantsContribReceived509>
      <GrossReceiptsFromAdmissions>
        <CurrentTaxYearMinus4Years>663457</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2743239</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>8977506</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>12534107</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>6249608</CurrentTaxYear>
        <Total>31167917</Total>
      </GrossReceiptsFromAdmissions>
      <TaxRevLeviedForOrgBenefit509>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>0</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>0</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>0</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>0</CurrentTaxYear>
        <Total>0</Total>
      </TaxRevLeviedForOrgBenefit509>
      <ValueOfSvcsFcltsFurnishdByGovt>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>0</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>0</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>0</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>0</CurrentTaxYear>
        <Total>0</Total>
      </ValueOfSvcsFcltsFurnishdByGovt>
      <Total509>
        <CurrentTaxYearMinus4Years>870852</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2999802</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>9393535</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>12951996</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>6546046</CurrentTaxYear>
        <Total>32762231</Total>
      </Total509>
      <AmtsRecdFromDisqualPersons>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>0</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>0</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>0</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>0</CurrentTaxYear>
        <Total>0</Total>
      </AmtsRecdFromDisqualPersons>
      <AmtsFromSubstContributors>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <Total>0</Total>
      </AmtsFromSubstContributors>
      <SupportFromDQPsEtc>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>0</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>0</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>0</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>0</CurrentTaxYear>
        <Total>0</Total>
      </SupportFromDQPsEtc>
      <PublicSupportTotal509>32762231</PublicSupportTotal509>
      <GrossInvestmentIncome509>
        <CurrentTaxYearMinus4Years>11381</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>95784</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>138513</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>78497</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>21862</CurrentTaxYear>
        <Total>346037</Total>
      </GrossInvestmentIncome509>
      <InvestmentIncomeAndUBTI>
        <CurrentTaxYearMinus4Years>11381</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>95784</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>138513</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>78497</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>21862</CurrentTaxYear>
        <Total>346037</Total>
      </InvestmentIncomeAndUBTI>
      <NetIncomeFromOtherUBI>
        <CurrentTaxYearMinus4Years>0</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>0</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>0</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>5920</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>0</CurrentTaxYear>
        <Total>5920</Total>
      </NetIncomeFromOtherUBI>
      <OtherIncome509>
        <CurrentTaxYearMinus4Years>5849</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>14629</CurrentTaxYearMinus3Years>
        <Total>20478</Total>
      </OtherIncome509>
      <TotalSupportTotal>
        <CurrentTaxYearMinus4Years>888082</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>3110215</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>9532048</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>13036413</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>6567908</CurrentTaxYear>
        <Total>33134666</Total>
      </TotalSupportTotal>
      <PublicSupportPercentage509>0.98876</PublicSupportPercentage509>
      <PriorYearSupportPercentage>0.98680</PriorYearSupportPercentage>
      <InvestmentIncomePercentage>0.01044</InvestmentIncomePercentage>
      <PriorYrInvestIncomePercentage>0.01220</PriorYrInvestIncomePercentage>
      <ThirtyThreePercntTestsCY509>X</ThirtyThreePercntTestsCY509>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
      </ContributorInfo>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <ArtPublicExhibitionAmts />
      <HeldWorksOfArtAmts />
      <Land />
      <Buildings />
      <LeaseholdImprovements>
        <OtherCostOrOtherBasis>698648</OtherCostOrOtherBasis>
        <Depreciation>24952</Depreciation>
        <BookValue>673696</BookValue>
      </LeaseholdImprovements>
      <Equipment>
        <OtherCostOrOtherBasis>204126</OtherCostOrOtherBasis>
        <Depreciation>126148</Depreciation>
        <BookValue>77978</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>357939</OtherCostOrOtherBasis>
        <Depreciation>60892</Depreciation>
        <BookValue>297047</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>1048721</TotalOfBookValueLandBuildings>
      <FinancialDerivatives />
      <CloselyHeldEquityInterests />
      <OtherSecurities>
        <Description>CERTIFICATES OF DEPOSIT</Description>
        <BookValue>1197816</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>CORPORATE BONDS</Description>
        <BookValue>682564</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <OtherSecurities>
        <Description>GOVERNMENT BONDS</Description>
        <BookValue>299300</BookValue>
        <MethodOfValuation>F</MethodOfValuation>
      </OtherSecurities>
      <TotalOfBookValueSecurities>2179680</TotalOfBookValueSecurities>
      <OtherAssets>
        <Description>DEPOSIT</Description>
        <BookValue>47161</BookValue>
      </OtherAssets>
      <OtherAssets>
        <Description>DUE FROM AFFILIATE</Description>
        <BookValue>2711491</BookValue>
      </OtherAssets>
      <TotalBookValueOtherAssets>2758652</TotalBookValueOtherAssets>
      <FederalIncomeTaxLiability>0</FederalIncomeTaxLiability>
      <OtherLiabilities>
        <Description>DEFERRED RENT</Description>
        <Amount>674384</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>674384</TotalOfAmounts>
      <TotalRevenue>6570539</TotalRevenue>
      <TotalExpenses>4374781</TotalExpenses>
      <ExcessOrDeficitForYear>2195758</ExcessOrDeficitForYear>
      <NetUnrealizedGLOnInvestments>-2631</NetUnrealizedGLOnInvestments>
      <TotalAdjustments>-2631</TotalAdjustments>
      <ExcessOrDeficitPerFS>2193127</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>6567908</TotRevenueEtcAuditedFinclStmt>
      <NetUnrealizedGainsInvestments>-2631</NetUnrealizedGainsInvestments>
      <RevenueNotRptdF990>-2631</RevenueNotRptdF990>
      <RevenueSubtotal>6570539</RevenueSubtotal>
      <TotalRevenuePerForm990>6570539</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>4374781</TotExpensesEtcAuditedFinclStmt>
      <ExpensesSubtotal>4374781</ExpensesSubtotal>
      <TotalExpensesPerForm990>4374781</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>FIN 48</Identifier>
        <ReturnReference>part x line 2</ReturnReference>
        <Explanation>the association performed an evaluation of uncertain tax positions for the year ended December 31, 2010, and determined that there were no matters that would require recognition in the financial statements or which may have any affect on its tax-exempt status.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="IRS990ScheduleI">
      <RecordsMaintained>true</RecordsMaintained>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>SCHOLARSHIPS</TypeOfGrant>
        <NumberOfRecipients>57</NumberOfRecipients>
        <AmountOfCashGrant>49878</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>grants monitoring</Identifier>
        <ReturnReference>PART I LINE 2</ReturnReference>
        <Explanation>RECIPIENTS ARE REQUIRED TO SUBSTANTIATE EXPENSES BEFORE RECEIVING THE AWARD. EXPENSES ARE REVIEWED BY MANAGEMENT PRIOR TO DISBURSING FUNDS.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <CompensationCommittee>X</CompensationCommittee>
      <IndependentConsultant>X</IndependentConsultant>
      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <WrittenEmploymentContract>X</WrittenEmploymentContract>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>false</SeverancePayment>
      <SupplementalNonqualRetirePlan>false</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>false</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>false</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>false</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>false</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>false</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>false</AnyNonFixedPayments>
      <InitialContractException>false</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>MARK KIMBLE</NamePerson>
        <BaseCompensationFilingOrg>132840</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>12735</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>7979</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>153554</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>JULIA HAMM</NamePerson>
        <BaseCompensationFilingOrg>200000</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>50000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>14000</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>20755</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>284755</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>CHRISTY HERIG</NamePerson>
        <BaseCompensationFilingOrg>140460</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>6996</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>8019</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>155475</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>review of 990</Identifier>
        <ReturnReference>990 part vi, line 11B</ReturnReference>
        <Explanation>The 990 is reviewed by the VICE PRESIDENT OF FINANCE AND OPERATIONS, THE PRESIDENT AND CEO, AND THE BOARD TREASURER. THE 990 IS PROVIDED TO THE BOARD OF DIRECTORS PRIOR TO FILING. ANY COMMENTS ARISING FROM THE REVIEW ARE ADDRESSED AND RESOLVED PRIOR TO FILING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>executive compensation</Identifier>
        <ReturnReference>990, part vi, line 15A &amp; 15B</ReturnReference>
        <Explanation>THE BOARD OF DIRECTORS REVIEWS AND APPROVES THE COMPENSATION FOR THE PRESIDENT AND CEO ANNUALLY. DURING THIS PROCESS, THE BOARD ENGAGES AN INDEPENDENT CONSULTANT TO PROVIDE CURRENT COMPARATIVE MARKET DATA. THE BOARD CONSIDERS SEPA'S FINANCIAL POSITION AS WELL AS ADDITIONAL EXTERNAL MARKET DATA USING PUBLISHED COMPENSATION STUDIES.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>governing documents</Identifier>
        <ReturnReference>990, part vi, line 19</ReturnReference>
        <Explanation>The organization's governing documents are available for viewing upon reasonable request.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>MEMBERSHIP</Identifier>
        <ReturnReference>990, PART VI, LINE 7A AND 7B</ReturnReference>
        <Explanation>THE ORGANIZATION DOES HAVE PAID MEMBERS WHO RECEIVE DISCOUNTS ON REGISTRATION AND WORKSHOPS. THE NOMINATING COMMITTEE PUTS OUT A SLATE AND THE MEMBERS VOTE ACCORDINGLY ON THE SLATE FOR ELECTING BOARD MEMBERS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CONFLICT OF INTEREST</Identifier>
        <ReturnReference>990, PART VI, LINE 12B AND 12C</ReturnReference>
        <Explanation>OFFICERS, DIRECTORS, AND TRUSTEES ARE REQUIRED TO PROVIDE AN ANNUAL DISCLOSURE OF ANY POTENTIAL CONFLICTS OF INTEREST. ANY CONFLICTS THAT COME TO THE ATTENTION OF THE BOARD OF DIRECTORS ARE DISCUSSED AND RESOLVED ACCORDING TO THE ORGANIZATION'S BYLAWS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>ORGANIZATION CONVERTED FROM C 6 TO C 3</Identifier>
        <ReturnReference>SCHEDULE A SUPPORT SCHEDULE</ReturnReference>
        <Explanation>THE ORGANIZATION CONVERTED FROM A C 6 TO A C 3 EFFECTIVE 2006, THEREFORE THE SUPPORT SCHEDULE IN SCHEDULE A PROPERLY DOES NOT HAVE AMOUNT FOR 2005 AND PREVIOUS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>WHISTLEBLOWER POLICY</Identifier>
        <ReturnReference>990, PART VI, LINE 13 &amp; 14</ReturnReference>
        <Explanation>SEPA ADOPTED WHISTLEBLOWER AND DOCUMENT RETENTION AND DESTRUCTION POLICIES EFFECTIVE OCTOBER 11, 2010.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>changes to governing documents</Identifier>
        <ReturnReference>part vi, line 4</ReturnReference>
        <Explanation>The revised bylaws are attached to this form.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>other changes in net assets</Identifier>
        <ReturnReference>part xi line 5</ReturnReference>
        <Explanation>Unrealized loss on investments $2,631</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <Form990ScheduleRPartIII>
        <NameOfRelatedOrg>
          <BusinessNameLine1>SOLAR ENERGY TRADE SHOWS LLC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>1220 19TH STREET NW SUITE 401</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20036</ZIPCode>
        </AddressUS>
        <EIN>271527552</EIN>
        <PrimaryActivity>CONFERENCES</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <PredominantIncomeType>RELATED</PredominantIncomeType>
        <ShareOfTotalIncome>4508521</ShareOfTotalIncome>
        <ShareOfEOYAssets>4964741</ShareOfEOYAssets>
        <DisproportionateAllocations>false</DisproportionateAllocations>
        <CodeVAmount>4042</CodeVAmount>
        <GeneralOrManagingPartner>false</GeneralOrManagingPartner>
        <PercentageOwnership>0.50000</PercentageOwnership>
      </Form990ScheduleRPartIII>
    </IRS990ScheduleR>
  </ReturnData>
</Return>