What is a Positive Energy Home?
Simply put, a Positive Energy Home is one that generates more net clean energy than it uses. This is normally accomplished by building the home to be highly energy efficient and using some combination of clean green energy generation system or systems such as photovoltaic solar panels, a wind turbine, or a small-scale hydroelectric generator. These homes may also use some level of passive solar heating and passive cooling.
Any home with a HERS score that is a negative number, -1 or lower, is a positive energy home.
BPC Builds Positive Energy Homes
To date, BPC has built six positive energy homes. The BPC home that generates the most surplus energy has a HERS score of -17. This means the home generates 17% more clean energy than it uses. It also means this green and clean surplus energy can be used by another home vs. that same energy being generated by a coal or gas-fired power plant.
Benefits of a Positive Energy Home
For a homeowner to benefit from owning a Positive Energy Home, they need to be connected to the power grid. This is because the home must feed its excess clean energy back into the grid for the homeowner to get one or more of the following benefits.