Ameresco Executive and Leadership Team

Mark Chiplock, the Executive VP, Chief Financial Officer & Chief Accounting Officer at Ameresco, manages all financial planning, reporting, and capital structure strategies. Overseeing the fiscal health of the organization, the Executive VP, Chief Financial Officer & Chief Accounting Officer ensures compliance with regulatory standards while driving long-term investment in renewable energy assets. This leadership role involves collaborating with the Board to evaluate market opportunities and financial risks across international operations. By optimizing capital allocation, Mark Chiplock directly supports the development of large-scale energy efficiency projects. The Executive VP, Chief Financial Officer & Chief Accounting Officer maintains rigorous accounting controls to provide transparency for shareholders and stakeholders. Through strategic financial modeling, Chiplock enables the company to pursue aggressive growth targets in the cleantech industry. This focus on financial stability ensures the continued expansion of the portfolio. Ultimately, Chiplock secures the necessary funding to advance global sustainability initiatives.

Peter Christakis, the Chief Operating Officer at Ameresco, directs all internal business operations and project execution workflows. Overseeing the integration of complex cleantech systems, the Chief Operating Officer ensures that renewable energy asset development meets rigorous performance standards across North American and European markets. This leadership role involves coordinating cross-functional teams to optimize energy efficiency projects for diverse client portfolios. By streamlining operational processes, Peter Christakis directly impacts the scalability of sustainable infrastructure solutions. The Chief Operating Officer maintains alignment with corporate growth objectives by managing resource allocation and project delivery timelines. Through meticulous oversight of field operations and technical services, Christakis secures operational excellence. This focus on efficiency supports the broader mission of delivering high-impact energy upgrades while maintaining profitability. Ultimately, Christakis drives the operational framework necessary for sustained market leadership in the renewable energy sector.

Leila Dillon, the Chief Marketing Officer & Senior VP at Ameresco, architects the global brand strategy and market positioning for all cleantech and renewable energy solutions. Overseeing corporate communications and demand generation, the Chief Marketing Officer & Senior VP ensures that the value proposition of energy efficiency services reaches key decision-makers across North America and Europe. This leadership role involves crafting targeted campaigns that highlight the impact of infrastructure upgrades on asset sustainability. By analyzing market trends, Leila Dillon directly influences the company's competitive standing in the renewable energy landscape. The Chief Marketing Officer & Senior VP maintains strong relationships with industry partners to amplify the reach of sustainable energy initiatives. Through data-driven marketing efforts, Dillon drives lead acquisition and brand awareness. This focus on strategic messaging supports the overall growth trajectory of the business. Ultimately, Dillon secures a dominant market presence by articulating the benefits of advanced energy technology.

Lenka Patten, the Senior Vice President and Chief Human Resources Officer at Ameresco, directs all talent acquisition, organizational development, and employee engagement initiatives. Overseeing the cultivation of a high-performance culture, the Senior Vice President and Chief Human Resources Officer ensures that the workforce possesses the technical expertise required to deliver complex renewable energy projects. This leadership role involves designing compensation structures and professional development programs that attract top talent across North American and European operations. By fostering an inclusive environment, Lenka Patten directly impacts employee retention and operational productivity. The Senior Vice President and Chief Human Resources Officer maintains alignment between human capital strategies and the company's long-term sustainability goals. Through effective workforce planning, Patten supports the scaling of the organization to meet increasing demand for energy efficiency solutions. This focus on human capital ensures the company remains an employer of choice. Ultimately, Patten secures the talent necessary for continued innovation.