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Published on January 12th, 2014 | by Zachary Shahan

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Solar Dropping Wholesale Electricity Prices Like A Bad Habit (Charts)

January 12th, 2014 by  


Originally published on Solar Love.

A reader recently shared some great Fraunhofer reports on renewable energy in Germany with me. One of them I had already written a pretty long article about back in November, but the second I don’t think I’d seen. It’s an extensive look at electricity prices and production data in 2013. It’s got more charts on electricity prices than I care to count. However, a few of these I thought I’d share just to make a point I haven’t made in a while.

The point is that solar PV production comes at times we need it most. When the sun is shining, we also tend to be using a lot of electricity. Historically, due to a limited amount of power capacity on the grid, that increase in demand meant an increase in the wholesale price of electricity bid on the spot market. However, when solar PV penetration really starts to get up there (as it has in Germany), that boost in midday production results in a drop in wholesale power prices — solar bids everyone down.

In the first chart below, you can see how electricity prices trend up with electricity production/demand in the middle of the day (when not much electricity is being produced from solar energy).

germany electricity prices winter

In the next three charts, you can see how solar PV production results in electricity price drops similar to those seen in the middle of the night when electricity demand is really low.

electricity prices solar

solar pv production electricity costs

solar reduces cost of electricity

For more details and analysis on this matter and others related to electricity prices in Germany, check out the full Fraunhofer report
 
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About the Author

is tryin' to help society help itself one word at a time. He spends most of his time here on CleanTechnica as its director, chief editor, and CEO. Zach is recognized globally as an electric vehicle, solar energy, and energy storage expert. He has presented about cleantech at conferences in India, the UAE, Ukraine, Poland, Germany, the Netherlands, the USA, Canada, and Curaçao. Zach has long-term investments in Tesla [TSLA] — after years of covering solar and EVs, he simply has a lot of faith in this company and feels like it is a good cleantech company to invest in. But he does not offer (explicitly or implicitly) investment advice of any sort on Tesla or any other company.



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