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The Oil Drum | German Power Grids Increasingly Strained

The Oil Drum | German Power Grids Increasingly Strained | Sustainable Energy | Scoop.it
With a steep growth of power generation from photovoltaic (PV) and wind power and with 8 GW base load capacity suddenly taken out of service the situation in Germany has developed into a nightmare for system operators.
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California Demonstrates Why Soft Renewables Are A Bad Idea ...

California Demonstrates Why Soft Renewables Are A Bad Idea ... | Sustainable Energy | Scoop.it

The contribution towards total generation from eligible renewable resources also varies seasonally. For the dates charted above, the amount of renewable generation as a percentage of the total generation within the CAISO ranges from 8% on Oct 18, 2011 to 14% on May 9, 2011.

California is trying to achieve a 33% Renewable Portfolio Standard (RPS) by 2020, with eligible resources that include wind, solar, geothermal, biomass, biogas, and “small hydro”, which translates roughly as generators under 30 MW.

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Are Hybrid Ribbons the Future of Renewables?

Are Hybrid Ribbons the Future of Renewables? | Sustainable Energy | Scoop.it

Recently, a research team in the UK has combined renewables to form energy-generating ribbons with great potential. The team, from the Institute for Materials Research and Innovation at the University of Bolton near Manchester in the UK, considered the fact that weather, especially in Britain, is highly unpredictable and decided to make a material that used more than one type of weather to produce electricity.

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Grid blackout threat weighs on renewables take up - EurActiv

Grid blackout threat weighs on renewables take up - EurActiv | Sustainable Energy | Scoop.it

The policy chief of Europe’s electricity industry association has told EurActiv that Europe will have to slow down its integration of renewable energies or risk power cuts and systems instability because of the slow pace of cross-border grid improvements.

 

“Either you go very fast in the transition - which is impossible [because] smart grids are expensive and the storage is not there in the needed scope – or you diminish the speed for integrating renewables into the system,” Susanne Nies of Eurelectric told EurActiv in a phone interview.

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World’s First Solar Power Plant that Run 24 Hours Uninterrupted

World’s First Solar Power Plant that Run 24 Hours Uninterrupted | Sustainable Energy | Scoop.it

Gemasolar is the first solar power plant that operated 24 hours. The central power tower technology solar power plant was built by Torresol Energy in Spain.


Via Roberto Bogge
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Hans De Keulenaer's comment, February 8, 2012 8:09 PM

Interesting perspective. But considering 1500 hours of sunshine per year (on a full-load equivalent basis), and assuming no losses in heat storage, one can run such plant at 17% of nameplate capacity during 24 hours (1500/8760 = 17%).
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High renewables penetration means eye-watering costs and ...

High renewables penetration means eye-watering costs and ... | Sustainable Energy | Scoop.it

I cannot avoid the conclusion that approaches based on renewables will mainly, at a very large expense, end up delaying the real decisions we must eventually make to lower emissions to acceptable levels.

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