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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/quarterly-reports/xbrl_doc_only/1375">Cover</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1375">Document and Entity Information</a></li>
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                        <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/1376">Financial Statements</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1376">Consolidated Balance Sheets</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1377">Consolidated Balance Sheets (Parenthetical)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1378">Consolidated Statements of Income</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1379">Consolidated Statements of Comprehensive Income (Loss)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1380">Consolidated Statements of Comprehensive Income (Loss) (Parenthetical)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1381">Consolidated Statement of Changes in Redeemable Non-Controlling Interest and Stockholders' Equity</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1382">Consolidated Statements of Cash Flows</a></li>
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                        <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/1383">Notes to Financial Statements</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1383">Description of Business</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1384">Summary of Significant Accounting Policies</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1385">Goodwill and Intangible Assets</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1386">Income Taxes</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1387">Commitments and Contingencies</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1388">Fair Value Measurement</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1389">Derivative Instruments and Hedging Activities</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1390">Investment Fund</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1391">Non-Controlling Interests</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1392">Business Segment Information</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1393">Long-Term Debt</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1394">Subsequent Events</a></li>
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                        <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/1395">Accounting Policies</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1395">Summary of Significant Accounting Policies (Policies)</a></li>
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                        <a class="menu-item " href="/sec-filings/quarterly-reports/xbrl_doc_only/1396">Notes Tables</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1396">Summary of Significant Accounting Policies (Tables)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1397">Goodwill and Intangible Assets (Tables)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1398">Income Taxes (Tables)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1399">Fair Value Measurement (Tables)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1400">Derivative Instruments and Hedging Activities (Tables)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1401">Business Segment Information (Tables)</a></li>
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                        <a class="menu-item current" href="/sec-filings/quarterly-reports/xbrl_doc_only/1402">Notes Details</a>
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                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1402">Summary of Significant Accounting Policies- Use of Estimates (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1403">Summary of Significant Accounting Policies- Restricted Cash (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1404">Summary of Significant Accounting Policies- Accounts Receivable (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1405">Summary of Significant Accounting Policies- Property and Equipment (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1406">Summary of Significant Accounting Policies- Project Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1407">Summary of Significant Accounting Policies - Sale-Leaseback (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1408">Summary of Significant Accounting Policies- Fair Value Measurements (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1409">Summary of Significant Accounting Policies - Share-based Compensation (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1410">Summary of Significant Accounting Policies - Share Repurchase Agreement (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1411">Summary of Significant Accounting Policies - Derivative Financial Instruments (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1412">Summary of Significant Accounting Policies - Earnings Per Share (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1413">Goodwill and Intangible Assets- Goodwill (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1414">Goodwill and Intangible Assets- Intangible Assets (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1415">Income Taxes - Additional Information (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1416">Income Taxes - Unrecognized tax benefits (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1417">Commitments and Contingencies- Solar Tariff Contingency (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1418">Commitments and Contingencies- Commitments as a Result of Acquisitions (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1419">Fair Value Measurement- Fair Value of Liabilities Measured on a Recurring Basis (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1420">Fair Value Measurement- Fair Value and Carrying Value of Long-term Debt (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1421">Derivative Instruments and Hedging Activities- Fair Value of Derivative Instruments on the Balance Sheet (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1422">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/quarterly-reports/xbrl_doc_only/1423">Derivative Instruments and Hedging Activities- Effects of Derivative Instruments in Accumulated Other Comprehensive Loss (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1424">Investment Fund (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1425">Non-Controlling Interests (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1426">Business Segment Information - Narrative (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1427">Business Segment Information (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1428">Long-Term Debt - Term Loan (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1429">Long-Term Debt- Senior Secured Credit Facility - Revolver and Term Loan (Details)</a></li>
                                                            <li><a href="/sec-filings/quarterly-reports/xbrl_doc_only/1430">Subsequent Events (Details)</a></li>
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        <h4>Business Segment Information (Details)</h4>
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