By Paul Homewood
At 5pm yesterday, electricity generation from wind farms dropped to a paltry 72 MW, just 0.1% of total demand of 52.1 GW.
The 24-hour period up to 10.30 pm was little better, averaging just 0.3%
Fortunately there is still enough gas and coal- fired capacity to fill the gap, but, as the Center for Policy Studies reported last year, this reserve capacity is becoming increasingly tight.
With coal power station closures already announced for this year, dispatchable capacity will drop to 61.6 GW. However, this reflects then nameplate capacity, which needs to be derated to allow for the likely operational effectiveness.
Assuming a figure of 85% for this, we will be down to 52.3 GW.
Under the Capacity Market Auction, the government has 49 GW of derated capacity contracted for 2018, the first year of the scheme, and 51 GW the year after…
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