On June 21 the northern hemisphere will celebrate a read letter day for me – the summer solstice. This is the longest day of the year, when the sun’s position in the sky reaches its northernmost extreme. I’ve been an advocate for solar power for more than 35 years, so I’m also an advocate for a day dedicated to celebrating the sun. Simply stated: look up in the sky and see the solution to our energy needs. Most of our time is spent looking down at the ground for oil, gas or coal.

It’s been a common rule in the solar power industry that for each cumulative doubling of installed photovoltaic (PV) solar power (the type of panel commonly seen on the roofs of homes and businesses) the price of solar modules decreases by 18%. Keep reading →