One of the less publicised features of Britain’s electricity system is that wind farms are often paid not to generate electricity.
This may seem extraordinary. The country is investing billions of pounds in renewable energy, yet at times electricity producers are instructed to switch off turbines even when the wind is blowing strongly. The reason is simple. The electricity cannot always be transported to where it is needed.
Most of Britain’s largest wind farms are located in Scotland and offshore in northern waters. Much of the demand for electricity, however, is in England. The national grid must therefore move huge quantities of electricity over long distances. When transmission lines reach their limits, the system operator has little choice but to reduce generation.
The result is a curious situation. Wind farm operators receive payments to stop producing electricity, while gas-fired power stations elsewhere may be paid to generate more power to meet local demand. Consumers ultimately bear the cost through their electricity bills.
This problem highlights a weakness in highly centralised systems. The further production is separated from consumption, the greater the infrastructure required to connect them. Large transmission networks are expensive to build, expensive to maintain, and increasingly difficult to expand.
From a localist perspective, the lesson is clear. Whenever possible, production and consumption should be brought closer together. Electricity generated near where it is used requires less infrastructure, suffers fewer transmission losses, and reduces dependence on large national networks.
This does not mean abandoning the national grid. Large-scale infrastructure will always have a role in providing resilience and balancing supply across the country. However, the present situation suggests that excessive dependence on distant generation creates costs that are often overlooked.
As the economy evolves away from the assumptions of perpetual growth, questions of affordability become increasingly important. Building ever more transmission capacity to carry electricity over hundreds of miles may prove difficult to justify in a society facing financial constraints.
A localist alternative would encourage greater use of local generation, local storage, and local consumption. Electricity generated within a locality could be used within that locality wherever practical. The national grid would remain as a strategic backbone, but not as the sole means of connecting every producer to every consumer.
The payments made to wind farms not to generate electricity are therefore more than an accounting curiosity. They are a reminder that distance carries a cost. In an age where affordability is becoming as important as efficiency, bringing production closer to consumption may increasingly become not merely desirable, but necessary.
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