1. Articles from Greentech Media

    1-14 of 14
    1. How Solar, Batteries And Time-Of-Use Pricing Can Add Up To Value

      How Solar, Batteries And Time-Of-Use Pricing Can Add Up To Value

      There’s definitely a value to storing solar energy in batteries, and then discharging that energy to meet grid and customer needs. Measuring that value — and finding a way to share it between battery-equipped solar customers and their utilities — is a trickier matter. Out in Sacramento, Calif., a long-running solar-storage pilot project has been testing out this interplay. The city’s utility, Sacramento Municipal Utility District (SMUD), has been working with startup Sunverge to align the operation of 34 battery-backed, PV-equipped homes with its needs to shave peak demand in late summer afternoons, when air-conditioning loads put stress on the grid.

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      Mentions: Sunverge
    2. Concentrating Solar Power Isn’t Worth Much Without Storage, Say Leading Executives

      Concentrating Solar Power Isn’t Worth Much Without Storage, Say Leading Executives

      At this week’s Solar Power International conference, a group of executives from Abengoa Solar, BrightSource Energy and SolarReserve spoke about where opportunities lie for their businesses. While they still plan eventually to build projects in the U.S., the three companies are turning to countries where they say CSP with storage offers a higher value. “A lot of us are running around internationally,” said Kevin Smith, the CEO of SolarReserve. “These are countries with less-developed grids where the value of storage is better realized.”

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      Mentions: CA DoE NV
    3. Texas Mulls New Grid Markets For Aggregated Distributed Energy Resources

      Texas Mulls New Grid Markets For Aggregated Distributed Energy Resources

      The ideas in play include allowing aggregated DERs to earn a broad, averaged-out wholesale price for the energy they export to the grid, opening up access to payments based on the cost of wholesale power at specific points on the grid, or even creating opportunities to play in ERCOT’s lucrative energy and ancillary services markets.

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      Mentions: CA HI TX
    4. How Utilities Can Evaluate New Business Opportunities In A Distributed World

      How Utilities Can Evaluate New Business Opportunities In A Distributed World

      But with stagnant electricity demand and the growth of distributed energy undercutting the traditional utility business model, utilities are under increasing pressure to expand the definitions of what businesses they’re in. GTM Research’s latest report, Alternate Utility Revenue Streams: Expanding Utility Business Models at the Grid Edge, takes an in-depth look at the multitude of alternative revenue models being explored by the country’s biggest utilities.

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      Mentions: U.S.
    5. Greentech Media Announces The 20 Most Innovative Companies at the Grid Edge

      Greentech Media Announces The 20 Most Innovative Companies at the Grid Edge

      Greentech Media announces the Grid Edge 20: the twenty most innovative companies leading the charge into grid modernization through a combination of innovative product and service offerings, sound market strategies, and forward-looking vision. The companies selected embody the tenets of the grid edge industry transformation that's underway in the electric power industry as a result of rapidly growing distributed generation.

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    6. Bright Energy's Underwater CAES 'Bag'

      Bright Energy's Underwater CAES 'Bag'
      Bright Energy's core technology is a long, flexible polymer/glass bag shaped like a giant sea cucumber. One end of the bag is attached to an air hose on the surface. A self-standing system with its own generator could produce power for under 6 cents a kilowatt hour, the CTO said. If you could latch onto a generator at an offshore wind farm, the costs could potentially drop to 2.5 cents.
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    7. PG&E Grid-Scale Storage Demo Projects

      PG&E Grid-Scale Storage Demo Projects
      PG&E does have another pumped hydro site in development, Mokelumne, that's potentially the same size as Helms and has the potential to be used to help buffer the 4,500 megawatts of wind power coming in from the Tehachapi wind developments. So, PG&E understands pumped hydro. Electrochemical storage might be a different story. PG&E has two pilot projects using sodium sulfur (NaS) batteries from NGK. NGK's NaS batteries were selected because they are one of the few technologies and vendors with a performance and reliability track record. According to Thalman, the pilot can help the ISO develop the storage markets with this testbed.
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      Mentions: CA NGK
    8. Stealthy Small Scale Commercial/Industrial Storage Startups

      Stealthy Small Scale Commercial/Industrial Storage Startups

      Powergetics is targeting small businesses and using relatively small-scale lithium-ion batteries to provide ancillary services and value for customers that don't have loads large enough for the wholesale demand response market ... Solar Storage technology is "distributed, on-demand solar, with proprietary power and storage technology for 24-hour power from 100 kilowatts to 20 megawatts." The firm is doing enterprise and commercial-level solar/storage hybrid systems.

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    9. VCs Prefer Solar, Automotive and Fuel Cells Investments Over Smart Grid

      VCs Prefer Solar, Automotive and Fuel Cells Investments Over Smart Grid
      Venture firms have invested $3 billion in greentech startups in the first four months of 2011. The biggest deals were in solar, automotive and fuel cells. VCs talk a lot about the smart grid but don't pull the trigger on too many deals -- especially when it comes to pure smart grid deals in metering, distribution automation, transmission technology, transformers and the like.
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    1-14 of 14
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