The Zero Emissions Grid Demonstration Project Follies

The Zero Emissions Grid Demonstration Project Follies – Watts Up With That?


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The closest thing that the world has to an attempted demonstration project of a zero emissions grid continues to fail spectacularly. That would be the Gorona del Viento project on El Hierro Island in Spain’s Canary Islands.

I have written about the El Hierro project many times, and will not go into the full background here. Suffice it to say that El Hierro was absolutely intended to be a demonstration of a zero emissions grid. A facility of five large wind turbines and a massive pumped-storage hydro backup facility (Gorona del Viento) was built and opened in 2014. The website of Gorona del Viento continues to proclaim on its opening page: “An island 100% renewable energy.”Hah!

It’s an island of about 10,000 people. Average electricity demand is 4-5 MW, and peak demand is about 7.5 MW. Roger Andrews did an independent analysis of the project for the Energy Matters website back in 2017. They built wind turbines with nameplate capacity of 11.5 MW on a mountainside in the trade-winds zone — about the most favorable wind conditions in the world. The hydro storage facility has a capacity of some 270 MWh, which is about 54 – 68 hours of average usage. (By contrast, New York governor Kathy Hochul has a big storage initiative to spend about $10 billion to build one hour of storage.). Doesn’t it sound like El Hierro has what they need to make this work?

Here are the latest statistics from Gorona del Viento, for the full year 2023. The percent of electricity for the island supplied by the wind/storage system for the full year was 35%. The other 65% came from the backup diesel generator. The best month for the wind/storage system was July, when it supplied 62% of the island’s electricity. But then there was October, when it only supplied 10%.

How could they be failing so completely with so much excess generation capacity and a huge storage facility that no one in the world can duplicate? You’ll have to ask them. I’m just reporting the statistics they put out themselves.

This is the best that anyone in the world can do, at least so far. "