Zero electric bills4.2
Panasonic panels with a 25-year warranty3.6
Panel upgrades and generator installs praised repeatedly4.6
Design walkthrough with shade and sun-angle maps3.0
Boiler and gas heating installs3.7
Replica back deck built better than the original3.1
High-rise solar installation3.8
Solar ownership or power purchase agreements2.9
52 years in business3.6
Handles the Mass Save program paperwork3.3
36 years in business3.7
BPI-certified building performance specialist3.2
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