Gleanings from the web and the world, condensed for convenience, illustrated for enlightenment, arranged for impact...

The challenge now: To make every day Earth Day.



  • TTTA Thursday-How Climate Change Is A Health Insurance Problem
  • TTTA Thursday-World Wind Can Be A Third Of Global Power By 2030
  • TTTA Thursday-First U.S. Solar Sidewalks Installed
  • TTTA Thursday-Looking Ahead At The EV Market

  • ORIGINAL REPORTING: 'The future grid' and aggregated distributed energy resources
  • ORIGINAL REPORTING: Renewable Portfolio Standards offer billions in benefits
  • ORIGINAL REPORTING: Powered by PTC, wind energy expected to keep booming

  • TODAY’S STUDY: On The Way To 100% New Energy In Hawaii
  • QUICK NEWS, October 18: The Lack Of Climate Change In The Election; Trump And Clinton On Climate Change And New Energy; New Energy Keeps Booming

  • TODAY’S STUDY: New Energy For New Urbanists
  • QUICK NEWS, October 17: Chemical Mulitnationals Bet on Climate Solutions; World Wind Gets Bigger; SolarReserve Power Plant Possibilities Rising

  • Weekend Video: High Water Everywhere
  • Weekend Video: Chasing Extreme Weather To Catch Climate Change
  • Weekend Video: Wind Power On The Land

  • FRIDAY WORLD HEADLINE-Climate Change And Crazy Weather
  • FRIDAY WORLD HEADLINE-World Cities Thinking Urbanized New Energy
  • FRIDAY WORLD HEADLINE-Google’s African Wind
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    Anne B. Butterfield of Daily Camera and Huffington Post, f is an occasional contributor to NewEnergyNews


    Some of Anne's contributions:

  • Another Tipping Point: US Coal Supply Decline So Real Even West Virginia Concurs (REPORT), November 26, 2013
  • SOLAR FOR ME BUT NOT FOR THEE ~ Xcel's Push to Undermine Rooftop Solar, September 20, 2013
  • NEW BILLS AND NEW BIRDS in Colorado's recent session, May 20, 2013
  • Lies, damned lies and politicians (October 8, 2012)
  • Colorado's Elegant Solution to Fracking (April 23, 2012)
  • Shale Gas: From Geologic Bubble to Economic Bubble (March 15, 2012)
  • Taken for granted no more (February 5, 2012)
  • The Republican clown car circus (January 6, 2012)
  • Twenty-Somethings of Colorado With Skin in the Game (November 22, 2011)
  • Occupy, Xcel, and the Mother of All Cliffs (October 31, 2011)
  • Boulder Can Own Its Power With Distributed Generation (June 7, 2011)
  • The Plunging Cost of Renewables and Boulder's Energy Future (April 19, 2011)
  • Paddling Down the River Denial (January 12, 2011)
  • The Fox (News) That Jumped the Shark (December 16, 2010)
  • Click here for an archive of Butterfield columns


    Some details about NewEnergyNews and the man behind the curtain: Herman K. Trabish, Agua Dulce, CA., Doctor with my hands, Writer with my head, Student of New Energy and Human Experience with my heart




      A tip of the NewEnergyNews cap to Phillip Garcia for crucial assistance in the design implementation of this site. Thanks, Phillip.


    Pay a visit to the HARRY BOYKOFF page at Basketball Reference, sponsored by NewEnergyNews and Oil In Their Blood.

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  • FRIDAY WORLD, October 21:

  • This Is How To Beat Climate Change. Now Get To It.
  • China To Build World’s Biggest Solar Panel Project
  • Europe’s Ocean Wind Boom
  • Australia’s Huge Ocean Energy Opportunity

    Wednesday, February 04, 2015


    Price Premium Analysis of a Multi-State Dataset of Solar Homes; Host-owned rooftop solar adds significant value to U.S. homes across 8 states

    Ben Hoen & Ryan Wiser, et. al., January 2015 (Lawrence Berkeley National Laboratory)


    Homes with solar photovoltaic (PV) systems have proliferated in the United States recently, reaching more than half a million in 2014, in part due to plummeting PV costs and innovative financing options. The U.S. Department of Energy estimates that achieving its SunShot PV price-reduction targets could result in 108 gigawatts of residential rooftop PV installed by 2050—equivalent to 30 million U.S. PV homes. As PV systems become an increasingly common feature of U.S. homes, the ability to value these homes appropriately will become increasingly important. At the same time, capturing the value of PV to homes will be important for facilitating a robust residential PV market. Appraisers, real estate agents, and other property valuers have made strides toward valuing PV homes, and several limited studies have suggested the presence of PV home premiums, but gaps remain in understanding these premiums for housing markets nationwide. To help fill these gaps, researchers from Lawrence Berkeley National Laboratory (LBNL) and their collaborators from other institutions conducted the most comprehensive PV home premium analysis to date. The study more than doubles the number of PV home sales previously analyzed, examines transactions in eight states, and spans the years 2002–2013. The results impart confidence that PV consistently adds value across a variety of states, housing and PV markets, and home types.

    Data and Methods

    The study used data on PV homes from LBNL’s Tracking the Sun report series with corresponding real estate information and information on similar non-PV homes. These data span the years 2002–2013 and eight states: California, Connecticut, Florida, Massachusetts, Maryland, North Carolina, New York, and Pennsylvania. The PV and non-PV homes were matched, resulting in a dataset of 18,871 non-PV homes (including 6,036 newly built homes) and 3,951 PV homes (including 1,444 newly built homes). All PV systems in this dataset were homeowner owned rather than leased. The sample included homes no more expensive than $900,000. These data were analyzed using hedonic (regression) pricing models to account for various home/site, neighborhood, and market characteristics. A number of models were estimated and compared, ensuring the results were robust to data and model specification. Contributory-value estimates also were generated for comparison based on net cost (PV cost after federal, state, and utility incentives), gross cost (PV cost before incentives), and income (value of energy savings from PV systems).

    Results and Conclusions

    • Home buyers consistently have been willing to pay more for a property with PV across a variety of states, housing and PV markets, and home types.

    • Premiums for PV homes are $1.10/watt larger in California than outside of California, but this difference is not statistically significant, and it seems to reflect the net cost of PV systems in each area (Figure 1). Moreover, the findings should provide greater confidence that PV adds substantial value to non-California homes.

    • Net cost estimates—which account for federal, state, and utility incentives—seem to be the best proxy for market premiums. Income estimates using the PV Value® algorithm are consistently lower than market premiums, possibly due in part to the sensitivity of this method to electricity-rate assumptions.

    • PV premiums remained fairly consistent even as PV gross costs decreased dramatically over the study period, suggesting that net cost, rather than gross cost, is the dominant market signal.

    • In contrast to previous studies, this study found only a small and non-statistically significant difference between PV premiums for new and existing homes, likely because this study includes many more sales and recent sales while excluding very-high-priced homes.

    • A “green cachet” might exist for PV homes; that is, buyers might be willing to pay a certain amount for having any size of PV system on their homes and then some increment more depending on the size of the system.

    • The market appears to depreciate PV systems in their first 10 years at a rate exceeding the rate of PV efficiency losses. The study data do not allow analysis of depreciation into the second decade of PV systems’ operation—this is an area for future research.

    • This study focuses only on homes with host-owned PV systems, not those with leased PV systems. Future analysis should focus on leased systems, as they are a growing portion of the PV home market.


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