Do the Math premiere

You can (and should) view the “Do the Math” movie on-line on YouTube. The movie was produced by 350.org. The movie is a call to action to stop or substantially reduce carbon emissions before our planet warms more than 2 degrees Celsius above pre-industrial levels.

On a lighter note, solar panels (photovoltaics) can now be purchased for under $1/watt with a 25 year warranty. That is a pretty good deal, even without government subsidies. I have never filed for tax rebates, as a matter of principle. But, I digress …

I’ve been looking into adding a wind turbine to my energy production. The turbines that sell for under $1000 do not impress me. They have small blades and only produce any real power in high winds (25 mph+). It is getting windier, where I live, but a turbine that could harness a 15 mph wind would serve me much better. I’m looking at building a turbine, specifically designed for lower wind speeds. I’m also thinking of purchasing some additional solar panels. At $1/watt, I can’t go wrong. The catch is that my charge controller would need to be replaced, and I might have to add some batteries.

I just got a letter from my electric utility. Electric rates are going up 5% in May, and the facilities charge (a fixed monthly fee) is also going up. I’ve been debating a grid tied inverter, so I could make better use of my photovoltaic output. As it is now, I have excess capacity most afternoons; especially on sunny days. With the increase is the monthly connection fee, I’m tempted to invest my money in going off grid, completely. Going off grid is an attractive idea, but the ramifications of going off grid are nothing to sneeze at. I would have to be able to provide for peak demand, and I’d have to have backup power for when the sun didn’t shine and the wind didn’t blow. For now, that is just not an option. For now, the goal will be to get the electric bill as low as possible.

On an unrelated note, I found time to rebuild my robot car. It’s been fun, writing the software for autonomous navigation. I’ll have to return to my robo-car in a future blog entry. That’s a lot more fun than talking about the destruction of our planet.

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