UK Energy Bills Surge to Rp40 Million a Year, Here Are the Savings Steps You Can Take

A sharp rise in energy bills is expected to hit around 20 million households in the United Kingdom early next year. Based on the latest projections, the typical annual bill will jump by around £276 to nearly £2,000—equivalent to Rp40 million—a financial blow that forces consumers to look for ways to cut spending.

The surge stems from the adjustment of the price cap set by the regulator Ofgem. Starting Thursday, the price cap rises 4% to £1,723 per year for a typical dual-fuel bill. However, consultancy Cornwall Insight estimates the next increase in January will reach 16%, pushing the cap to £1,999. This figure is the highest in recent years and has sparked concerns about an increasingly heavy cost-of-living burden.

Even so, there is still room for consumers to reduce the impact. Richard Neudegg, Director of Regulation at Uswitch, considers the most effective step now is to switch from a variable tariff to a fixed tariff with a locked price. "Locking in a competitive fixed tariff is the biggest lever households can pull," he said. Currently, there are 34 offers below the January projection, with the cheapest being a 12-month fixed tariff from Fuse Energy at £1,675—£48 cheaper than the October price cap and potentially saving up to £324 compared with the January projection.

Beyond switching tariffs, home energy efficiency is key. Many homes in the UK still have suboptimal boiler settings. The recommended radiator flow temperature is 60°C or lower, but it is often left at 70–80°C. Lowering it can save around £60 per year. Reducing the hot water temperature to 42°C also cuts gas consumption by up to 2%. Small steps such as installing draught strips on windows and doors can save £25 per year, while lowering the thermostat by 1°C from the comfortable range of 18–21°C saves £120 per year according to the Energy Saving Trust.

For the long term, insulation is a significant investment. Homes built between 1920 and 1990 generally have uninsulated cavity walls. Adding cavity wall insulation can save £200 per year. Topping up loft insulation from 120mm to 270mm saves around £20 per year. Uninsulated hot water pipes also waste energy; wrapping them with cheap polyethylene foam can prevent damage during winter.

"Switching to a heat pump energy tariff and adding green technology such as solar panels provides the biggest savings, up to £800 per year," the Energy Saving Trust said.

The UK government offers a boiler upgrade scheme with a £7,500 grant for installing air-to-water or ground-to-water heat pumps. Households not connected to the gas grid get an additional £1,500, bringing the total grant to £9,000. In Scotland, interest-free loans or grants for energy efficiency are also available. However, heat pumps run on electricity, whose per-unit tariff is more expensive than gas, so switching to a dedicated heat pump tariff becomes important. Users who switch to a time-of-use tariff can save £330 per year compared with a flat tariff, and up to £800 with added solar panels.

For consumers in the UK, these steps offer a way out amid global energy price pressure. Meanwhile, in Indonesia, rising global energy prices could also affect domestic subsidies and electricity tariffs, although the government is currently still holding off on raising household tariffs. The lesson from the UK shows that diversifying energy sources and efficiency are key to facing market volatility.

With the projected increase already around the corner, the question now is: will households proactively lock in tariffs and invest in efficiency, or wait until bills balloon? Small steps today could mean hundreds of pounds saved over the year.