Solar 101
INTRODUCTION
This is a brief overview of solar electric for people who are new to it. It will answer the most often asked questions.
Let’s begin with how solar cells work. The technology was developed in the 1950’s and has been consistently improved. Cells are made of silicon wafers with embedded wires. When the sun hits these cells, the atoms are bombarded with photons and give up electrons, producing electricity.
The quality and reliability of today’s solar panels is evidenced by manufacturers’ warranties that extend to 25 years for 90 % of their rated output. Solar panels produce direct current (DC), the only type of electricity that can be stored for later use.
Panel location is important. A site with unrestricted sun from 9am to 3pm is required.