The Power of PV Solar

Photo comes from the Greek word meaning light

Volt is taken from the name of the Italian physicist Alessandro Volta who pioneered electricity in the 1700s

Photovoltaic (PV) means light electricity

PV technology produces electricity by absorbing the sun’s light and directly converting it to energy. It does this silently, at the source, without depleting any of our natural resources and without generating any waste.

Quotes

“Solar energy’s potential is off the chart. The energy in sunlight striking the earth for 40 minutes is equivalent to global energy consumption for a year.”
– Scientific American Magazine

“Photovoltaics come to us at a time when conventional systems of generation and delivery are plagued by unpredictable shortages followed by temporary surpluses, incredible cost overruns, and highly unstable price structures.”
- Steven J. Strong, Harvard University

“Entrepreneurs are ready to launch a rocket of clean-energy innovation in this country. After all, Americans are the most prolific inventors and problem-solvers in world history. From automobiles to airplanes, microwave ovens to microchips, Americans have remained on the leading edge of technology. And that’s true when it comes to the clean-energy sector.”
- Jay Inslee, Washington State Congressman

 

 

 

How it works

The basic building blocks of a PV solar system are individual cells containing a semiconductor, such as silicon. When light strikes the cell, electrons are knocked loose from atoms creating an electric current. In physics, this is called the photovoltaic effect. Solar cells are commonly employed in calculators and watches.

Several cells can be connected to form modules or panels. Panels are frequently positioned on rooftops of houses and office buildings.

Panels, in turn, are connected to form arrays that are mounted above the ground on frameworks or pedestals, designed to hold the panels at a 20-30 degree angle that maximizes direct sunlight through the course of a day. Arrays can be connected to the electric grid for purchase by utilities. PV systems are a reliable source of power, durable and easy to maintain. Even on overcast days they produce about 80% of their peak capacity.