Twin Setbacks for Tidal

More competitive market in green energy takes toll

1 min read
Twin Setbacks for Tidal

PG&E has announced it's ditching, at least for now, a 5 MW tidal energy project that had been slated for the coast of Humboldt County in northern California. The utility cited excessively high investment costs--including $50 million just to cover transmission infrastructure--and absence of any potential for physical expansion. Pacific Gas & Electric cancelled another plan for a tidal project in northern California last year but is continuing to pursue one near Santa Barbara.

So far, the Federal Energy Regulatory Commission has issued just one license for a tidal project in the United States, and that one is dormant, the owner having surrendered it after failing to raise funds, according to Energy Central's Ucilia Wang.

The bad news on the U.S. side of the pond pales, however, with the recent news from the UK. The British government said two weeks ago it was giving up plans for a giant tidal plant to be built across the Severn estuary that cuts into southwestern England north of the Wales peninsula. The gigantic 8 GW facility consisting of 214 4o MW turbines would have been gigantically expensive to build: 20 billion pounds according to its promoters, more like 34 billion according to the British government--which said the project had turned out to be too risky and too expensive compared to other sources of low-carbon electricity.,

Scotland's 10 billion pound tidal challenge remains very much active, but England's decision does cast serious doubt on whether Scotland will ever generate 25 percent of the UK's electricity, as the Scots claim they could do.

Concurrently with the Severn decision, the British government approved eight sites for construction of new nuclear power plants.

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This photograph shows a car with the words “We Drive Solar” on the door, connected to a charging station. A windmill can be seen in the background.

The Dutch city of Utrecht is embracing vehicle-to-grid technology, an example of which is shown here—an EV connected to a bidirectional charger. The historic Rijn en Zon windmill provides a fitting background for this scene.

We Drive Solar

Hundreds of charging stations for electric vehicles dot Utrecht’s urban landscape in the Netherlands like little electric mushrooms. Unlike those you may have grown accustomed to seeing, many of these stations don’t just charge electric cars—they can also send power from vehicle batteries to the local utility grid for use by homes and businesses.

Debates over the feasibility and value of such vehicle-to-grid technology go back decades. Those arguments are not yet settled. But big automakers like Volkswagen, Nissan, and Hyundai have moved to produce the kinds of cars that can use such bidirectional chargers—alongside similar vehicle-to-home technology, whereby your car can power your house, say, during a blackout, as promoted by Ford with its new F-150 Lightning. Given the rapid uptake of electric vehicles, many people are thinking hard about how to make the best use of all that rolling battery power.

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