The Bennington Superior Courthouse and State Office Building achieves a net-zero ready design, with a minimum 13% rate of return on energy investments. Measured energy use confirmed a 78% reduction in energy consumption over the existing facility and a 40% reduction in energy over a similar code compliant building. The energy intensity has been reduced from 110 kBtu/sf-yr in the existing building, to 26 kBtu/sf-yr, saving the state $180,000 in annual energy costs the first year. The building is one of the best performing state office buildings. It uses no fossil fuel combustion on-site for space heating or cooling and only a very small amount of propane for backup heating domestic hot water (after the solar thermal system). Heating and cooling are provided with a ground source heat pump.
The electricity meter associated with the Bennington Courthouse and State Office Building will be in a group net-metering agreement, offset by a 500kW solar installation in Charlotte, VT to be constructed in 2016.
Zero Net Energy Definition Used
Site Energy Use
Monthly Energy Data and Utilities
Energy Data Type:
Other purchased Fuels:
Propane ~1,000 gal/ year for DHW not produced by the solar thermal system.