Tag: geothermal heat

By Posted on Posted in Energy & Sustainability Tagged with , ,

No, I haven’t forgotten you! I was on vacation in Iceland, and had very limited access to Internet.

I’ve known for years that Iceland is a geothermal paradise, but to see it in person was quite amazing. Everywhere we went, there were geothermal hotsprings. Everywhere, there were geothermally heated municipal swimming pools and hot tubs (one of the few bargains in a rather expensive country). We visited a geothermal power plant that contained an energy museum. We enjoyed hot, hot showers, as hot as our solar-heated system at home (we saw almost no solar in Iceland, in part because usually they don’t have too much sun, and in part because geothermal is readily available and produces much steadier power).
We cooked eggs in a geothermal spring, and tasted bread that had been baked in the ground, overnight.

One surprise for me was how much geothermal power is used to create steam and spin turbines to generate electricity; I’d expected most of it to be heating water for direct use rather than spinning turbines, because that cuts down on efficiency.

But efficiency and conservation aren’t such big concerns in Iceland. We were rather surprised that conserving water or electricity didn’t seem to be a value. People just ran the water or left lights on.

But that can change with education and a values shift. Meanwhile, Iceland can truly claim to have one of the greenest power grids in the world.

In a country with only 318,452 inhabitants as of January 2011 and approximately 116,000 households, this tiny country has the capacity to supply much of Europe’s energy needs. In fact, plans are afoot to build deep-sea cables that will export as much as 5 billion kilowatt-hours of clean, renewable electricity to the rest of Europe—enough to power 1.25 million homes.

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By Posted on Posted in Energy & Sustainability, Shel's Personal Life, Uncategorized Tagged with , , , ,

If you think we in the Green movement tend to take ourselves waaaay too seriously, here’s a bit of comic relief.

Dilbert creator Scott Adams describes with excruciating humor all the missteps in building a Green home.

I can relate. In my own Greener home adventures, we’ve discovered…

  • Solar panels without hinges cost A LOT of money to take down and put back up again when you need a new roof.
  • Tax credits are available for new roofs that keep your house cooler in the summer, even if you don’t use an air conditioner. But they don’t apply to roofs that keep you nice and toasty warm in the winter, even if you live in COLD New England.
  • Because of stress from extreme temperature variations, solar water tanks wear out in about half the time of conventional tanks—but not so fast that they’re still under warranty. Right about the time that the savings had paid for the unit.
  • Just because you want to go Green doesn’t mean it will be easy. When our furnace went, we couldn’t justify the cost of geothermal, and ended up replacing our oil-burning furnace with…another, more efficient, oil-burning furnace. Sigh!

    In an ideal world, we’d be able to afford, and justify, the $50,000 superinsulated roof, the geothermal heater, jacking up the R value on our 1743 farmhouse to the point where we had essentially no heating bill…but that’s not the world we live in. We did put in both solar hot water and photovoltaic systems years ago, but we’re a long way from feeling or being energy self-sufficient, and the capital costs were high.

    Am I sorry we took these expensive Green initiatives? Not at all. Do I feel we could have been better shoppers if we’d been more informed? You betcha.

    And do I want incentives to bring the prices down and the reliability up throughout society, especially for those least able to afford a large capital investment with a sometimes dubious payback? Absolutely.

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