A large dose of commonsense needing to be widely circulated…..
By Paul Homewood
There seems to have been a certain amount of interest in adding battery storage systems to wind and solar farms recently. Needless to say, the owners are not attempting to cure the problem of intermittency. Instead there appear to be two main reasons:
1) Storage systems are eligible for subsidy under the Capacity Market and also the National Grid’s Supplemental Balancing Reserve, both designed to buy in standby capacity.
2) Power produced during times of surplus, say on windy or sunny days, would tend to have a lower economic value. By using it to recharge batteries, the stored power could be sold at a higher price at times of shortage or high demand.
Hywind Scotland, the floating offshore wind farm is a good example of the latter, with plans to add 1 MW of storage.
We often hear about the capacity of battery systems, but rarely…
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