Solar Arrays Reduce Carbon Pollution by 468 Tons Per Year

See in real time how much solar energy Filtrine’s solar array has produced since the 1/8/2020 installation.

Keene, NH – With the recent expansion of its rooftop solar array, Filtrine Manufacturing Company now powers its entire operation with solar energy. The 793.1-kilowatt array installed this fall includes 2,234 solar panels and generates over 900 megawatt hours of solar electricity per year.

A 30-kilowatt array installed in 2013 includes 120 solar panels and supplies 35,000 kilowatt hours on an annual basis. Combined, the arrays offset Filtrine’s entire electric load and represent one of the largest solar projects in the Monadnock Region. After a five-year payback period, the company will generate solar power at no cost for decades to come.

Filtrine, which was founded in 1901, has always been concerned about sustainability,” according to President Turner Hansel. “Our products promote the wise use of water both for drinking and process chiller applications, and we are committed to producing them with the least impact on our environment.”

The solar arrays will offset 468 tons of carbon pollution annually, which is equivalent to taking 90 cars off the road or the carbon sequestered by 500 acres of forests. The carbon offset is also equivalent to the annual consumption of 984 barrels of oil or the annual electric load of 74 homes.

Five years ago, Filtrine contracted with students from Antioch University New England to evaluate its environmental footprint. The findings provided the manufacturer with a baseline from which to inform its decision-making and to evaluate its progress.

A one million BTU wood chip boiler installed two years ago by Froling Energy reduced the company’s reliance on oil by 90%. Other improvements included the installation of solar hot water collectors, insulation, and LED lighting, in addition to the purchase of energy-efficient machinery.

This project is featured as one of the sustainable energy projects on the City of Keene’s Sustainable Energy Plan website. Learn more…

Founded in 1901, Filtrine Manufacturing Company is an innovative leader in the design and manufacture of custom-built, high-quality, application-specific liquid chillers for industrial and medical processes, including explosion-proof, high and low ambient models; stainless steel and bronze drinking water fountains; bottle fillers; drinking water chillers; water purification and filtration systems. Filtrine® products are engineered and built with pride in the USA. Filtrine has the best warranties in the business and is ISO 9001:2015 certified. For more information, visit

ReVision Energy was founded in 2003 by two solar geeks in a garage and has grown to over 250 employee-owners spread across Maine, New Hampshire, and Massachusetts. ReVision Energy is on a mission to accelerate New England’s transition from fossil fuels to a solar powered economy, inclusive of a wide range tools to mitigate the climate crisis, including solar panels, battery storage, electric vehicle chargers, heat pumps, and water heating equipment.

ReVision Energy is a Certified B Corporation and a 2019 recipient of the “Best for the World” honor. The company is also ranked as NECEC’s Clean Energy Company of the Year, has held the #1 Rooftop Solar Installer distinction from Solar Power World for three years. Learn more at