Latest articles by The Solar Nerd

Keep up to date on industry news and articles relevant to green living and the solar homeowner.

Photo of an Anker portable solar panel.
5 Portable solar panels with USB ports
Does your life involve taking lots of little electronic devices with you? Do you constantly worry about how much battery charge you have? Is the nearest outlet sometimes too far away? The solution that people typically reach for is an external battery. These are great and cheap, but suffer from a couple major flaws. First of all: you need to remember to keep them charged. If you have difficulty remembering to charge your phone, with an external battery now you have two things to keep track of.
Photo of all-black SunPower solar panels.
How do you improve the curb appeal of solar panels?
I personally like the look of solar panels on my house. I think they’re interesting to look at, and they’re often a conversation starter. But my solar panels face the backyard away from the street, so even if I didn’t like how they look, people casually passing by don’t see them. Not everyone has that choice: typically, you want your solar panels pointed south to capture as much sunlight as possible, but doing that might mean facing the panels toward the curb.
Door-to-door solar sales: don't get scammed!
How to avoid being scammed when a solar salesperson knocks on your door (7 tips)
With the exploding popularity of rooftop solar, competition among solar installers to capture as much of that market is intense. If you live in one of the hot markets for rooftop solar such as California, Hawaii, the southwest, and some northeast states, there’s a good chance you’ve heard your doorbell ring and found a solar salesperson at your door, ready to pitch you on the benefits of rooftop solar. It’s one thing to buy Girl Scout cookies (Thin Mints!
Photo of a large house.
How many solar panels are needed to run a 4,000 square foot or larger house?
If you have a very large house, you probably have high electricity usage too, possibly making your home a good candidate for solar. If you’re curious about solar and want to find out how many solar panels you’d need for your home that is 4,000 square feet or larger, the most accurate way to find that out is to get a professional solar installer to perform an analysis. A quick but somewhat less accurate way is to read your monthly electric bill and use our solar calculator to determine what your power generation and estimated system price would be.
Solar powered generators: 3 options for clean, portable power
Whether you’re a camper, boater, someone who wants backup power for occasional blackouts or an uninterruptible power supply for important equipment such as a home server or computer, a solar generator can be a great option that also happens to be more environmentally friendly. A solar generator isn’t a generator in the same way that a traditional gasoline generator is. There’s no engine inside: instead, a solar generator consists of a large lithium-ion battery and one or more solar panels to recharge it.
Images of Maxeon/SunPower solar cells.
SunPower solar panels: the unofficial product guide
Among the premium solar panel manufacturers that are popular in the US, California-based SunPower stands out. Their solar panels are at the top end of efficiency, but they also have an extensive dealer network to support a 25 year product warranty. The strong warranty and installer certification program are some of the reasons why The Solar Nerd network includes several SunPower dealers. While this might make it seem like we’re biased toward SunPower, there are other excellent brands worthy of consideration, such as LG and Solaria.