Solar panels are expensive, but after a few years, they pay for themselves. Avoid these red flags to protect your investment.

I’m a fan of net metering because it forces Xcel Energy, which enjoys a monopoly in my area, to discount our bill for any energy our solar panels produce that I don’t use.

CityWave, a 459-foot-long solar canopy, is set to become one of the world’s largest urban rooftop photovoltaic installations ...

The situation is even worse in the electric vehicle arena. Prices are going down as batteries get cheaper, but they're still ...