By Kyle Alspach

Boston Business Journal Staff

Many energy services companies prefer to specialize in one area of the market, such as efficiency, solar or wind.

Framingham-based Ameresco Inc. does plenty of all three. But in a recent interview, Ameresco founder and CEO George Sakellaris said the company has done just about everything else, too -- geothermal, hydro, biogas, biomass cogeneration and landfill waste-to-energy projects.

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