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What happens when solar cells get 20 times cheaper?
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Posted Oct 5, 2003 PT by the Health Ranger (Mike Adams)

That's not a very favorable payoff for most people. Twenty years is about fifteen years too long to make solar an attractive investment. Sure, a lot of individuals and business want to "go solar" for environmental reasons, but coming up with twenty or thirty thousand dollars in cash to do it is another matter altogether.

Now, if solar cells could be made at 1/20th the current cost, this would dramatically lower the overall cost of a solar system. I'm guessing that solar cells make up around half the cost of a solar system (because you have to pay for the inverter, wiring, batteries and labor, too). So if solar cells were suddenly 1/20th the cost -- say $50 instead of $1000 -- then a solar solution that previously cost $2000 would only cost $1050 now.

To keep things simple, let's just say that these new solar cells would reduce the normal 20 year return to a 10 year return. What's the impact of that?

A 10 year return is still too distant for most individuals, so I wouldn't expect these cheaper solar cells to revolutionize the home solar market. Few people will be willing to front 10 years of electricity bills to go solar.

But what about at the power plant level? Power plants don't need to store the power and could, instead, just pipe it right into the grid. These cheaper solar cells could indeed make "solar farms" an economic reality. I'm not certain about the exact figures here, but if sunlight were cheaper than burning coal, there would be a whole lot of interest in using these solar cells to supplement existing power generation systems.

Of course, solar doesn't work at night, so solar could only act as a daytime supplement, not a 24-hour system. And that means coal-powered plants will still be needed. If someone could invent batteries at 1/20th the cost, that would truly revolutionize home power, commercial power and power plants. But right now, as exciting as solar panels at 1/20th the cost sounds, their potential to revolutionize the solar market remains limited.

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