How many solar panels would be needed to power the USA?
From the start, let’s make it clear that there are no serious proposals to power the planet using only solar energy. The renewable energy technologies available today - solar, wind, geothermal, tidal, hydro, along with energy storage - are complementary. Each technology has strengths and weaknesses, but when we use all them in concert, it’s possible to power the entire planet with clean energy. Even so, it’s an interesting thought to consider how many solar panels we would need if that was the only power source available.