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Commercial Case Study: Worcester, MA


54% of the domestic

hot water use


This is a commercial project funded through the Massachusetts Clean Energy Council (Mass CEC) and the Federal Government. The system will produce an estimated 54% of the domestic hot water use for the entire building, saving over 1200 Therms per year which in the equivalent of 120,000,000 Btu’s or 35,160 kilowatt-hours.The system saves 14,742 pounds of carbon dioxide from being released into the atmosphere each year or the equivalent of 368 mature trees, which means that over the 30 year propecia lifetime of the system will save 222 tons of CO2.

The array consists of 12 Apricus AP 30 collectors (360 evacuated tubes).The collectors are attached to angle iron bolted to stanchions every four feet.

These are the internal heat exchange coils for Domestic hot water.

The 750 gallon solar storage tank with drain back tanks, external heat exchanger, controller, and the solar pumps.