Peterborough Town Library – Peterborough, NH

Newly installed rooftop array on the roof of the recently renovated Peterborough Library in New Hampshire.

By the numbers:

System size:   71.6 kilowatts (217 solar panels)

System output:  75,520 kilowatt-hours/year

CO₂ reduction:  79,900 pounds/year


The Peterborough Library in New Hampshire is stepping up to meet their sustainability goals. Partnering with our Brentwood team, the town library installed a 71.6 kilowatt rooftop solar array onto their building. Comprised of 217 solar panels on the rooftop of our library building, this system will generate roughly 75,520 kilowatt-hours (kWhs) of electricity every year, and has the potential to save our library upwards of $300,000 over the lifetime of the system.

Additionally, the environmental benefit of producing our own local, clean power will be keeping 79,900 lbs of carbon pollution out of the atmosphere, or offsetting the equivalent of over 134,500 miles driven in a gas-powered car every year.

This project was financed through a Power Purchase Agreement, meaning the library paid no upfront fee to install the solar panels. Instead, an investor pays for the upfront cost through a fund managed by ReVision, while the library pays for the power generated from the solar panels each month instead of paying for power from the grid. After a period of time, the library can opt to buy the system from the investor (at a significantly reduced price) and own all the solar power generated outright!

To see what the library’s system is producing, both today and across its lifetime, click here.