How solar farms can also be useful at night

Posted on 6 Dec 2019

Solar farms supply electricity to the grid during the day, but are of no use at night. However, an initial test in the United Kingdom now shows that the inverters of those solar farms can absorb fluctuations and peaks of the national British electricity grid at night.

Successful experiment

Power fluctuations on the electrical grid are common. For example, there are peaks in wind energy during stormy nights and when there is little demand for electricity. To absorb those peaks and fluctuations, additional investments or modifications to power plants are required, amounting to £ 400 million (€ 478.6 million). A successful experiment with a British solar farm could be a cheaper and simpler solution to stabilize the grid.


Inverters on solar farms convert solar energy into electric power. During a test with a British solar farm, it was found that the same inverters can supply the voltage from the electricity work back to the grid at a slightly different level. Or how inverters can adapt the current to a higher voltage. “We have proven that solar farms can play a greater role in the electrical network. But this is only the beginning, ”said Kareen Boutonnat, COO of Lightsource BP, the owner of the solar farm in question.

Read more: The Guardian


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