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<title>Ameresco, Inc. Quarterly report pursuant to Section 13 or 15(d)</title>
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    <h3>Quarterly report pursuant to Section 13 or 15(d)</h3>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/1586">Cover</a>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/1594">Notes to Financial Statements</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1594">Description of Business</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1595">Summary of Significant Accounting Policies</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1596">Business Acquisitions and Related Transactions</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1597">Goodwill and Intangible Assets</a></li>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1600">Fair Value Measurement</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1601">Derivative Instruments and Hedging Activities</a></li>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1605">Long-Term Debt</a></li>
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                        <a class="menu-item current" href="/sec-filings/all-sec-filings/xbrl_doc_only/1606">Accounting Policies</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1606">Summary of Significant Accounting Policies (Policies)</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/1607">Notes Tables</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1609">Income Taxes (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1610">Fair Value Measurement (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1611">Derivative Instruments and Hedging Activities (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1612">Investment Funds (Tables)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1613">Business Segment Information (Tables)</a></li>
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                        <a class="menu-item " href="/sec-filings/all-sec-filings/xbrl_doc_only/1614">Notes Details</a>
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                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1614">Summary of Significant Accounting Policies - Use of Estimates (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1615">Summary of Significant Accounting Policies - Restricted Cash (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1616">Summary of Significant Accounting Policies - Accounts Receivable (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1617">Summary of Significant Accounting Policies - Property and Equipment (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1618">Summary of Significant Accounting Policies - Energy Assets and Asset Retirement Obligations (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1619">Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1620">Summary of Significant Accounting Policies - Sale-Leaseback (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1621">Summary of Significant Accounting Policies - Income Taxes and Recent Accounting Pronouncements (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1622">Summary of Significant Accounting Policies - Fair Value Measurements (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1623">Summary of Significant Accounting Policies - Share-based Compensation (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1624">Summary of Significant Accounting Policies - Share Repurchase Program (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1625">Summary of Significant Accounting Policies - Derivative Financial Instruments (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1626">Summary of Significant Accounting Policies - Earnings Per Share (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1627">Business Acquisitions and Related Transactions - Narrative (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1628">Goodwill and Intangible Assets- Goodwill (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1629">Goodwill and Intangible Assets- Intangible Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1630">Income Taxes - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1631">Income Taxes - Unrecognized tax benefits (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1632">Commitments and Contingencies- Solar Tariff Contingency (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1633">Commitments and Contingencies- Commitments as a Result of Acquisitions (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1634">Fair Value Measurement- Fair Value of Liabilities Measured on a Recurring Basis (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1635">Fair Value Measurement- Fair Value and Carrying Value of Long-term Debt (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1636">Derivative Instruments and Hedging Activities- Fair Value of Derivative Instruments on the Balance Sheet (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1637">Derivative Instruments and Hedging Activities- Effects on Statements of Income (Loss) and Consolidated Statements of Comprehensive Loss (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1638">Derivative Instruments and Hedging Activities- Effects of Derivative Instruments in Accumulated Other Comprehensive Loss (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1639">Investment Funds (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1640">Non-Controlling Interests (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1641">Business Segment Information - Narrative (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1642">Business Segment Information (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1643">Long-Term Debt - Variable-Rate Construction and Term Loans (Details)</a></li>
                                                            <li><a href="/sec-filings/all-sec-filings/xbrl_doc_only/1644">Long-Term Debt - Senior Secured Credit Facility - Revolver and Term Loan (Details)</a></li>
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        <h4>Summary of Significant Accounting Policies (Policies)</h4>
        11a
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