The PV, or photovoltaic, environmental impact is a term used to describe how PV panels have zero emissions. Every 1 Kilowatt of panels you install on your house will save about twenty tons of carbon dioxide, or CO2, from entering the atmosphere over the panel's estimated lifespan. What does CO2 do? It warms up the planet's atmosphere, creates more dangerous and unpredictable weather, and makes rain acidic, damaging vegetation and marine ecosystems. The PV environmental impact reduces all of these terrible effects while providing the comforts of modern society - electricity, air conditioning, and microwave ovens. There's no need to eliminate these things from everyday life. PV panels simply eliminate the harmful emissions.