Spain’s historic blackout on the 28th April is still being investigated by various entities and authorities but issues from the distribution and grid-connections of renewable energy-sources is being blamed by most experts. Experts state that the high share of renewable sources in the electricity grid requires the grid to acquire more inverters to moderate fluctuations in the frequency and voltage which are more frequent in renewable-generating sources.
At the time of the start of the blackout around 12.30PM, 60% of Spain’s electricity generation was coming from renewable sources, and the start of the blackout was marked by a 50% drop in the electricity out and a total of 8GW loss. The drop triggered other parts of the grid to shut down leading to a total of 15GW drop that shut down all of Spain’s and Portugal’s grid.
During the blackout, Spain did not lack electricity generation capacity and even had backup energy sources, which it began activating gradually. Power had to be restored and redistributed through the grid in a controlled, step-by-step process to avoid overloading the system or causing instability in grid frequencies, which could have triggered another blackout.
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