Move over wind farms: why some argue cutting costs is the best way to cut carbon
Move over wind farms: why some argue cutting costs is the best way to cut carbon
Gavin Tait, a 69-year-old resident of Glasgow, proudly identifies as an early adopter of emerging technologies. A decade ago, upon receiving a retirement payout, he invested in solar panels, a home battery, and a heat pump. “It seemed like a no-brainer,” he recalls. “I could save money and help the environment—why wouldn’t I?” Initially, the setup proved effective, with his energy expenses decreasing and the home remaining comfortably warm. However, over recent winters, the situation shifted. “I noticed my electricity bills were going through the roof,” he says. This winter, he and his wife reverted to their gas boiler, a backup they had retained. Gavin, who shared his story with BBC Your Voice, attributes the problem to the cost disparity between gas and electricity. While gas delivers nearly one unit of heat per unit of energy, his heat pump generates up to three or four units for each. Yet, since heat pumps operate on electricity, he now pays around 27p per kilowatt-hour, compared to less than 6p for gas—more than four times as much. “It’s simple,” he states. “Economically, it just doesn’t stack up.”
The Cost of Clean Energy
His experience aligns with broader concerns. A Censuswide survey for Ecotricity last summer revealed that two-thirds of heat pump owners found heating their homes more expensive than before. Critics argue this reflects a flaw in government priorities. Heating and transport account for over 40% of UK emissions, yet they claim progress in replacing gas boilers and petrol cars is lagging. They believe ministers are overly focused on cleaning up electricity generation, which contributes only about 10% of total emissions. This emphasis, they say, is inflating electricity prices and making it harder for people to switch to heat pumps or electric vehicles.
System Complexity and Costs
When asked about the cost of renewables, Sir Dieter Helm, an Oxford University professor of economic policy, offers a nuanced perspective.
“It all depends what you choose to measure,” he says.
Sir Dieter highlights that focusing solely on generation costs overlooks the broader system expenses. Electricity must be available constantly, not just during sunny or windy periods. This requires backup power sources, increased capacity, and an expanded grid. He provides a simplified example: the UK’s peak demand is approximately 45 gigawatts (GW), which historically required around 60GW from coal, gas, and nuclear plants. Now, with the shift toward renewables, capacity needs have risen to near 120GW. The grid must also be expanded to transport energy from offshore wind farms to where it’s needed.
These costs are already affecting household bills. Network charges have climbed due to grid expansions, such as new pylons and power lines. There are also “balancing costs,” which include payments to wind farms to curtail output when the system can’t handle excess electricity. Subsidy schemes previously accounted for about 10% of average household bills, and their impact remains a factor. The UK’s reliance on offshore wind, while significant, has not seen the same cost reductions as solar. Britain’s often overcast winters further limit the scalability of solar power, making it harder to meet peak demand. As Middle East conflicts drive up oil and gas prices, the urgency to address this issue has grown. The government insists that prioritizing renewables will enhance energy security, reduce emissions, and eventually lower bills. But are these goals achievable, or has the focus shifted too far from where it matters most?
