Generally speaking, net zero buildings
are buildings that produce as much energy as they consume. This
can be measured in a number of ways, however one of the most common is
on an annual basis. This means that over the course of an entire
calendar year, the building creates as much energy as it consumes.
This can be accomplished through a variety of means, from heating
the structure by utilizing passive solar technologies, installing
energy efficient lighting and appliances, as well installing a
photovoltaic system. All of these techniques can play a
direct role in helping to
make a building net zero.