Traditional finance theory characterizes investments by their risk and their return. High risk investments, such as junk bonds, have to...

We celebrated a milestone recently. Over one million homeowners have solar. It took 62 years, from 1954 to 2016, to get to this point....

The economics for rooftop solar are terrific — typical paybacks in the 4-10 year range. From a Return on Investment (ROI) standpoint,...

The sun is shining brightly on your rooftop solar system (or the system you hope to have). But how can you tell if those photons falling...

According to a recent GTM/SEIA study, residential solar installation costs in the U.S. were basically unchanged from Q4 2014 to Q4 2015....

Most of my rooftop solar customers express a preference for buying U.S. made solar panels. And they were willing to pay a premium for...

Our society’s energy generation transition from wood to coal to oil to gas has been steady and obvious. Now we are benefiting from the...

For a homeowner, determining how many solar panels you need is a simple question. But in order to answer the question accurately, solar...

The “solar coaster” is not the newest daytime ride at six flags, but a term for the cyclical ups and downs of the solar industry. Like...

Every residential solar contractor’s website talks about their experience, knowledge of rooftop solar products, and happy customers (full...

Ahhh….it’s almost springtime. The weather is getting warmer, the trees are starting to bud, and people are starting to think about their...

Over the past few months you may have seen or heard a continuous stream of ads warning about the imminent demise of solar incentives,...

If only all our New Year’s Resolution were this easy. Luckily, saving energy is easier than losing weight after gorging over the...

A rooftop solar system is an expensive up-front investment. The typical 5 kw system costs about $20,000 – or $14,000 after the 30%...

Headline: “Low Cost Rooftop Solar.” What’s not to like? If you’re a homeowner you can save thousands of dollars shopping around for the...

$0.25/kwh – what a typical California homeowner pays for electricity (based on current PG&E rates at the U.S. average of 12,000 kwh/yr)...

I typed the words “free solar” into Google and got 747,000,000 hits in half a second. We all know that solar systems are not free. But...

Solar panels are commodities — not very different than the bottled water you find on a supermarket shelf. Granted some panels are more...

Rooftop solar panels only work when they are in direct sunlight. So if you install solar on a partially shaded roof, the output of your...

Running a successful solar business isn’t easy. Whether it’s a small local installer working on one system a week on neighborhood homes,...