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View Diary: The roads to our alternative energy future (58 comments)

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  •  Do you have numbers for (2+ / 0-)
    Recommended by:
    Roger Fox, dkosdan

    what leeway might be gained from an honest conservation policy?

    Improvement is change. Not all change is improvement.

    by ricklewsive on Wed Aug 24, 2011 at 10:38:22 AM PDT

    •  Hard numbers to arrive at (2+ / 0-)
      Recommended by:
      Odysseus, Futuristic Dreamer

      Gas hot water furnaces have improved greatly over 25 yrs not a lot of room for improvement. New windows and door, reinsulate older houses, obviously room for improvement. Problem at a certain point its almost worth it to either gut a house and rebuild it, or tear it down and build new.

      Underappriciated fact, Replacing HVAC long distance grid sectors with HVDC can see from 30% to over 40% savings in transmission loses. BOE calc, 500 gigs at 7% loses. About 35 gigs, using HVDC can trim those loses by a third or more.

      FDR 9-23-33, "If we cannot do this one way, we will do it another way. But do it we will.

      by Roger Fox on Wed Aug 24, 2011 at 11:16:35 AM PDT

      [ Parent ]

      •  I was just wondering since we (4+ / 0-)

        don't really have a national policy. After the Japanese capacity took a big hit some researchers did some estimates and concluded that banning incandescent lights and replacing them with CFLs in Japan would replace the output of six nuclear reactors. That does not seem insignificant.

        Thanks for the response.

        Improvement is change. Not all change is improvement.

        by ricklewsive on Wed Aug 24, 2011 at 11:55:08 AM PDT

        [ Parent ]

        •  They already have an extsenive user base (0+ / 0-)

          of CFLs.

          David

          Dr. Isaac Asimov: "The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny ...'"

          by davidwalters on Wed Aug 24, 2011 at 12:08:00 PM PDT

          [ Parent ]

          •  I used Japan as a measure of potential. (0+ / 0-)

            In the U.S. Per Wiki

            The United States Department of Energy reports that sales of CFLs have dropped between 2007 and 2008, and estimated only 11% of suitable domestic light sockets use CFLs.

            It would seem a simple concept with great potential. From (PDF) Volume I: National Lighting Inventory and Energy Consumption Estimate

            ... lighting was approximately 8.3% of national primary energy consumption, or about 22% of the total electricity generated in the U.S.

            ....

            The commercial sector is the largest energy user overall, having large quantities of energy used by all three light sources. Fluorescent and incandescent are the two largest commercial lighting energy users, accounting for 56% and 32% of its annual 391 TWh/year of electricity use. In the residential sector, energy use is primarily driven by incandescent technologies, where 90% of the energy is consumed by this light source.

            Improvement is change. Not all change is improvement.

            by ricklewsive on Wed Aug 24, 2011 at 12:30:22 PM PDT

            [ Parent ]

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