Photovoltaic (PV) Solar Panels
Photovoltaic panels are an excellent way to mitigate the high cost of electricity. PV panels can be the primary renewable energy system and help reduce your energy costs. Panels are installed on the roof as close to true south as possible to optimize your solar gain. This collected solar energy is converted to electricity and then sent back to the residential electrical grid. The electricity that is drawn from the residential power grid to operate these homes is subsidized by the energy collected by the PV panels.
If you are planning on having solar installed in the future but do not want to invest in it now, always let the plan designer know. The roof trusses must be specially engineered to support the added weight of the panels.