Posted on November 22, 2016 by Paul Eldrenkamp and Rachel White in Guest Blogs
A few months ago we completed a deep energy retrofit of a house that we hope will be net-zero energyProducing as much energy on an annual basis as one consumes on site, usually with renewable energy sources such as photovoltaics or small-scale wind turbines. — in other words, that we hope will produce as much energy as it consumes on an annual basis. If we succeed, this will be our first net-zero project.
There are two key strategies for designing a net-zero-ready home: you minimize the amount of energy the house needs to operate; and you maximize the amount of energy that the house can produce onsite, usually with a photovoltaic(PV) Generation of electricity directly from sunlight. A photovoltaic cell has no moving parts; electrons are energized by sunlight and result in current flow. system (PVPhotovoltaics. Generation of electricity directly from sunlight. A photovoltaic (PV) cell has no moving parts; electrons are energized by sunlight and result in current flow.). In short, you create an energy budget that balances consumption with production.