UK Energy Price History: 20 Years of Gas vs Electricity

To make an informed decision about your home's heating system, you need to understand where energy prices have been and where they are heading. This visual guide presents 20 years of UK gas and electricity price data from Ofgem and the ONS, showing the trends that are reshaping the economics of home heating.

The data reveals several critical insights for anyone considering a heat pump versus gas boiler decision: gas prices are more volatile than electricity, both fuels have risen substantially, and the structural trends — driven by renewable energy growth and carbon pricing — favour electricity becoming relatively cheaper over time.

Gas Price History: 2006-2026

Sources: Ofgem price cap data, DESNZ Quarterly Energy Prices. Costs based on 12,000 kWh annual gas consumption before boiler efficiency adjustment.

Key insight: gas prices have risen 170% over 20 years, with extreme volatility during the 2022 crisis. The narrative that gas is "cheap and stable" has been comprehensively disproved. Gas prices are tied to international markets, geopolitical events, and supply disruptions — factors entirely outside UK consumer control.

Electricity Price History: 2006-2026

The "heat pump effective" column shows the cost per kWh of heat from a heat pump at COP 3.0. At 8.2p/kWh of heat versus gas's 7.3p/kWh of heat (after boiler efficiency), the gap is small — and smart tariffs or solar panels close it entirely.

The Electricity-to-Gas Price Ratio Over Time

Ratio below 3.0 = heat pumps clearly cheaper to run than gas on standard tariffs (at COP 3.0).

The ratio has fluctuated significantly. Government policy aims to reduce it by shifting green levies from electricity to gas — the single most impactful change for heat pump economics. If the ratio drops to 2.5:1, heat pumps would save approximately £300-£500 per year on running costs versus gas, even on standard tariffs.

The 2022 Energy Crisis: A Pivotal Moment

The 2022 energy crisis — triggered by Russia's invasion of Ukraine and the resulting disruption to European gas supplies — was the most dramatic energy price event in UK history. Gas prices more than tripled. Electricity prices doubled. Annual energy bills for a typical home exceeded £3,000 for the first time.

The crisis exposed a fundamental vulnerability of gas heating: dependence on international fossil fuel markets. The UK's gas supply is increasingly sourced from international LNG markets, making it subject to global supply and demand forces, geopolitical tensions, and shipping disruptions. Electricity, by contrast, is increasingly generated domestically from wind and solar — sources that are immune to international fuel price volatility.

The 2022 crisis accelerated heat pump adoption. BUS grant applications surged as homeowners experienced the reality of gas price vulnerability. Those who had already installed heat pumps were partially insulated from the worst price increases — their electricity bills rose, but by less than gas bills, and their heat pump's efficiency multiplied every unit of electricity into three to four units of heat.

Gas Volatility vs Electricity Stability

One of the most important but least discussed differences between gas and electricity is price volatility. Gas prices swing wildly based on international market conditions — events in Russia, the Middle East, or global LNG shipping can triple UK gas prices within months. Electricity prices are influenced by gas (since gas power stations set the marginal price), but increasingly buffered by domestic renewable generation with near-zero fuel costs.

As the UK builds more offshore wind, solar, and nuclear capacity, the proportion of electricity generated from volatile fossil fuels will shrink. By 2030, the government targets 95%+ low-carbon electricity. This structural shift means electricity prices will become increasingly decoupled from international fossil fuel markets — making heat pump running costs more predictable and stable than gas.

Where Prices Are Heading

While no one can predict energy prices with certainty, the structural trends are clear:

• Gas: Tied to international markets. Subject to geopolitical risk. Carbon taxation will increase costs further. Long-term trend: upward and volatile.
• Electricity: Increasingly domestic and renewable. Wholesale costs falling as wind and solar scale. Green levy rebalancing will reduce consumer prices. Long-term trend: stable or falling in real terms.
• The ratio: Government and CCC policy aims to reduce the electricity-to-gas ratio from 3.6:1 towards 2.5:1 or lower. This shift would make heat pump running costs decisively cheaper than gas.

The Office for Budget Responsibility (OBR) and the CCC both project that over the next 10-20 years, the economic case for heat pumps will strengthen significantly as these structural changes take effect. Running cost analysis using conservative assumptions already shows heat pumps competing with gas — the future trends will widen the advantage.

What This Means for Your Heating Decision

The 20-year price history delivers three clear messages for homeowners:

1. Gas is not cheap. It has risen 170% in 20 years and spiked 300% during the crisis. The idea of gas as affordable, stable energy is a myth of the past.
2. The trend favours electricity. Renewable generation is driving down wholesale electricity costs. Carbon pricing will drive up gas costs. The ratio is moving in heat pumps' favour.
3. Heat pumps provide price protection. By using 3-4 times less energy for the same heat, and by using electricity (which is increasingly domestic and renewable), heat pumps insulate you from the worst of fossil fuel price volatility.

Combined with the BUS grant, the 20-year cost projection makes heat pumps the clear winner for most UK homes. Adding solar panels provides further protection by generating your own electricity at zero marginal cost.

Frequently Asked Questions

How much have gas prices risen in 20 years?

From 2.5p/kWh to 6.76p/kWh — a 170% increase. The 2022 peak of 10.3p/kWh was a 312% increase from 2006 levels.

How much have electricity prices risen?

From 10p/kWh to 24.5p/kWh — a 145% increase. In percentage terms, electricity has risen less than gas.

Is the price ratio changing?

It fluctuates between 3.0 and 5.0. Policy aims to reduce it below 3.0 by shifting levies from electricity to gas. Below 3.0, heat pumps are clearly cheaper on standard tariffs.

Will gas prices keep rising?

The structural trend is upward due to international market dependence and incoming carbon pricing. Short-term fluctuations are unpredictable, but the long-term direction is clear.

What about electricity prices?

Wholesale costs are falling as renewables grow. Consumer prices depend on policy decisions about levies and network costs. The trend favours stable or falling real-terms prices.

How does this affect heat pump economics?

Every shift in the ratio towards electricity favours heat pumps. The 20-year trend, combined with policy direction, makes the economic case for heat pumps increasingly strong.