Surely you’ve heard of Moore’s Law, right? The trend of doubling the amount of transistors that fit on a computer chip every 12-18 months. Well, a similar paradigm exists for the price of photovoltaic cells used in solar panels.
According to a report by The Economist, Swanson’s Law, as it’s dubbed, suggests the price of PV cells drops 20% for every doubling in industrial capacity. The price of crystalline silicon photovoltaic cells has fallen from $76.67 per watt in 1977 to a forecasted $.74 per watt in 2013, the report says.
What does this mean? It means cheap, clean, sustainable solar power is on the horizon. Which in turn means less damage to the environment. I’ve always thought “solar” is the way to go. Most of the Earth’s energy comes form the sun anyway. So we might as well take advantage of all the free and plentiful sunshine coming from the sun.