Which solar photovoltaic system to choose

It's the most efficient panel at 22.8% and comes with the longest warranty (40-year performance and product warranties—15 years longer than the industry standard). Maxeon is the highest-rated solar panel on the EnergySage Marketplace. The biggest downside to Maxeon solar panels is the price tag.

Expert tips on how to choose, buy and install the best type of solar panel systemUnderstand the difference between solar water heating and solar photovoltaicsWatch our solar PV installation video to see what's involved when buying In this guide (8 articles) How much do solar panels cost? Solar panel battery storage Buying advice for solar panels

Out of our top brands, REC offers the best bang for your buck: The Alpha Pure 410-watt panel maintains efficiency above 22%, and it has solid 25-year performance and product warranties. These panels also have one of the lowest temperature coefficients on the market, which means they perform better in hotter temperatures compared to other panels.

Even light shading can reduce your solar panels' output by 50% or more. Look for solar panels with high power output and high efficiency. If you have a complex roof with a lot of small, awkward spaces, we recommend selecting a small solar panel that still offers a lot of power. How many solar panels do you need?

Here's how we compare them: The best way to assess a solar panel's performance is to look at its efficiency, output, and temperature coefficient. Efficiency measures how well solar panels convert sunlight into electricity.

If you have enough room for a larger system, installing slightly less efficient panels could provide ample output at a competitive price. But at the end of the day, going solar now, while you can claim the residential tax credit, will lead to greater savings than waiting for the perfect solar panel.