Why we need windfarms
Tuesday, March 8th, 2005The Renewable Energy Foundation are an interesting campaign group. They are pro-renewable, but anti-windfarm. While their concern about carbon emissions are genuine, they seem excessively opposed to wind, while citing tidal power, solar power and biofuels as alternatives. But tidal power is a technology that needs a couple more decades to become viable, solar power is next to useless in a country with so little sun in winter, when it most needs it, and biofuels need plenty of resouces - to produce the 12GW of electrical power needed to reach the government’s 2010 renewable target (of just 10% of our power being generated by renewables), at 200 GJ per hectare per year (a rough estimate of grown biofuels’ capability), we’d need 1.89 million hectares of land - that’s nearly a third the UK’s current arable farmland. The 5000 wind turbines needed would only take up 120,000 hectares.
So being pro-renewable and anti-wind doesn’t leave much room for manoeuvre, really, which is why perhaps they advocate the highly renewable option of, er, scraping as much North Sea oil as we can and relying on CO2 sequestration, another technology that is still in early stages, to cover for it.
Alright, they could just be concerned citizens who object to windfarms for aesthetic reasons (while being more than happy to see our countryside turned into a giant oilseed rape factory), but given they’re backed by “anonymous wealthy individuals” (the only prominent one being Noel Edmonds), it makes one suspicious. I get even more suspicious when you find out David White, the author of their scientific report on the inefficacy of windfarms, is an oil refinery expert who spent over 30 years with Exxon. The report itself is scaremongering, although individual windturbines are variable in output, that variability is balanced across the system (especially over a large landmass like the UK), and no data are given to show how much ‘backup’ from coal-fired power stations, that supposedly will wipe out the carbon savings, is actually needed.
I’m not excessively pro-windfarm - it’s unlikely they can provide more than 20% of our electricity without becoming costly, and the REF are right in saying that electricity generation (the largest emission producer) is only part of the solution - reducing emissions from transport and improving energy efficiency, while investing innovation in other renewable technologies, are also important. Windfarms are one part of a multi-threaded approach, but are still an essential part - we are the windiest country in Europe, the technology is mature (Denmark, a far less windy country than us, gets 18% of its power from wind) and you cannot ditch windfarms when there is no viable short-term alternative to producing energy without producing CO2 emissions.






