Solar is cheaper than ever, thanks to the falling cost and rising efficiency of photovoltaic (PV) solar panels. But here’s something to consider: figuring out the real cost of solar energy is about more than just the price tag on the panels and their rated power output.
For example, there’s the lifespan of the panels to take into account. And then there’s the system’s “solar energy yield” — or how much electricity it will actually generate over the course of the year.
