Energy Suppliers and Household Energy Independence

A household cannot leave the grid, but it can change what it buys from a supplier. Generation, storage and load shifting cut the units imported, and export and flexibility payments turn some of that into income. What remains is the connection itself: standing charges, metering, settlement and, in most homes, gas. The supplier relationship narrows rather than ends.

The scale of the remaining dependence is national as well as personal. UK energy consumption was 75.2% fossil fuel in 2024, down from 76.6% in 2023 and 78.2% in 2022, and the UK is a net energy importer with a high dependence on gas and oil¹. The British energy security strategy frames the aim as weaning Britain off expensive fossil fuels and boosting diverse sources of homegrown energy for greater energy security in the long term³. Household generation sits inside that picture, not outside it.

The routes that pay households for flexibility and export are administered through suppliers and the network, not around them. The Feed-in Tariffs scheme, closed to new applications on 1 April 2019, still pays accredited generators through licensed electricity suppliers⁴. The Demand Flexibility Service, launched in winter 2022/23, rewards shifting when electricity is used⁵. Both depend on a metered connection and a supplier relationship.

The short answer: a narrower relationship, not an exit

An energy supplier is responsible for providing energy to homes and businesses⁸. That definition is the boundary of what a household can escape. A home that generates its own electricity still buys import units when generation is short, still exports through a licensed supplier when it is long, and still pays for the connection that makes both possible.

What changes is the balance. A household with solar, a battery and a heat pump buys fewer units and, through export and flexibility, may sell some back. It does not stop being a customer. The Feed-in Tariffs scheme illustrates the structure precisely: it requires participating licensed electricity suppliers to make payments on electricity generated or exported by accredited installations⁹. The payment route runs through the supplier, not around it.

The same applies to help with efficiency. Under the Energy Company Obligation, a household can contact any of the obligated energy suppliers to find out how they may be able to help, even if that supplier is not the current provider¹⁰. Obligations sit with suppliers as a class, and the funding decision sits with each supplier: it is up to energy suppliers to determine which energy efficiency measures they want to fund, the level of funding they provide, and the retrofit coordinator or installers they choose to work with¹⁰.

So the honest short answer is that independence from suppliers is partial and structural. A household can reduce reliance on any one supplier by switching, reduce reliance on suppliers collectively by generating and shifting load, and cannot remove the connection, the standing charge or the settlement role that suppliers perform. The rest of this page sets out the figures, what drives them, how the four nations differ, the rules, and what it all means for a household's position.

The figures: national dependence and household generation

The figures that matter fall into three groups: what the country depends on, what household generation has delivered, and what flexibility pays.

On national dependence, the fossil fuel share of UK energy consumption was 78.2% in 2022, 76.6% in 2023 and 75.2% in 2024¹. The direction is downward and the level is high. The Committee on Climate Change notes the phase out of coal from UK electricity generation alongside ongoing expansion of the second largest national offshore wind capacity¹¹. Electricity decarbonises faster than heat and transport, which is why a household's gas use remains the harder half of its own dependence.

On household generation, the Feed-in Tariffs scheme is the largest body of evidence. It supported a cumulative 870,164 small-scale low-carbon installations holding 6.5 GW of generating capacity over its lifetime⁶. In Scheme Year 14, covering 1 April 2023 to 31 March 2024, 8.3 TWh of renewable electricity was generated on the scheme, of which approximately 1.3 TWh was exported to the grid⁶. Domestic installations accounted for 829,651 accreditations, 95.38% of the total, and 2,955 MW, 45.53% of capacity⁶.

On flexibility, the Demand Flexibility Service incentivised 1.6 million households and businesses in winter 2022/23, saving over 3.3GWh of electricity, and delivered 3.9GWh of flexibility across 44 events between December 2024 and March 2025⁷. Earlier reporting on the service recorded a reduction of almost 800 MWh throughout events to date, with some companies earning up to £8,000⁵. Those two sets of figures describe different periods and different participants, and the scale differs between them; the later statutory security of supply report is the fuller account.

What drives the numbers

Three things drive how far a household can move: what it can generate, what it can store and shift, and what the payment routes allow.

Generation is the first lever. Support to generate your own electricity notes that solar panels, heat pumps and other energy efficiency measures may offer an attractive payback to homeowners without grant support¹². That is a statement about payback, not a guarantee, and it is made in the context of Northern Ireland's separate support landscape.

Storage and shifting are the second. The Demand Flexibility Service was designed to help manage potential winter pressures by reducing demand during evening peak periods and reducing reliance on more expensive electricity generation⁵. Its original purpose was system pressure, not household income, and the household payment is a by-product of that. From 9 April 2026 the service introduced a reduced eligibility threshold of 0.1MW, bi-directional flexibility, zonal procurement, Primacy and a Self-Nominated Baseline option⁵. From 7 October 2026 it will launch the capability to procure constraint management actions, with participants able to take part in both margin and system tagged actions⁵.

The third driver is the payment route itself. The Feed-in Tariffs scheme pays for both generation and export, and the split matters. In SY14, 14.43% of total exported electricity was metered, with 85.57%, or 1.13 TWh, deemed⁶. Deemed export is an administrative estimate rather than a meter reading, which is why the arrival of smart metering changes what a household can be paid for precisely.

What this means in practice is that the drivers of independence are technical and administrative at once. A household can install generation and storage, but how much it is paid for export depends on metering, accreditation and the tariff period rules that govern when a rate applies.

Two markets: how the nations differ

The United Kingdom contains two domestic energy markets, and the difference is not cosmetic.

Northern Ireland sits outside several of the frameworks that shape household energy in Great Britain. The Feed-in Tariffs scheme, for example, covered renewable and low-carbon electricity generation technologies in England, Wales and Scotland only⁶. That separation reshapes what follows: the support schemes, the accreditation routes and the obligations a household can call on differ by nation rather than applying uniformly across the UK. Gas price changes in Northern Ireland are set within that separate market, as firmus energy's October 2026 changes show, with prices rising by 8.9% in Ten Towns and 12.5% in Greater Belfast from October 2026¹³.

The Feed-in Tariffs scheme covered England, Wales and Scotland, not Northern Ireland⁶. Households there have a separate support route for generating their own electricity¹². Ofgem's FIT statistics are published by GB region including Scotland and Wales, and for some regions micro-CHP, anaerobic digestion and hydro figures are not included in the breakdown due to low numbers of the technologies¹⁴.

Scotland has its own fuel poverty framing, with the Scottish Government describing a GB energy market that leaves two-thirds of households disengaged and paying more for their energy than customers who have switched suppliers¹⁵. That figure dates from 2016 and describes Great Britain, not Northern Ireland.

On supplier performance, Ofgem's July to August 2025 satisfaction survey found that no suppliers saw a statistically significant increase in overall satisfaction or decrease in overall dissatisfaction compared to the January 2025 wave¹⁶. That is a GB finding and says nothing about Northern Ireland suppliers, who are not in that market.

The rules that shape switching and support

The rules that shape a household's room to manoeuvre are a mix of licence conditions, scheme rules and consumer protections.

On switching, the position is more open than many households assume. A tenant directly responsible for paying the energy bill has the right to switch supplier at any time without incurring an exit fee if they were not informed upfront of the terms and conditions¹⁷. Suppliers cannot refuse business on the basis that a customer has special requirements¹⁸. All fuel suppliers, electricity and gas, follow a code of practice meaning they will not cut off supply if a payment plan is agreed and kept to¹⁹.

On data, suppliers can access daily or less granular energy consumption data for any purpose except marketing, with a clear opportunity for the customer to opt out²⁰. That matters for flexibility schemes, which depend on consumption data to verify a shift.

On scheme obligations, the Energy Company Obligation requires suppliers to conduct independent monitoring of 5% of energy efficiency measures installed under ECO²¹. A supplier which is not a group company and has notified a supply not exceeding a qualifying supply has obligations of zero for a phase²². Large and medium-sized suppliers are identified by customer numbers and supply volumes²³.

On the Feed-in Tariffs scheme, the right to challenge a decision is tightly drawn. Only the owner of the installation, or those who have been assigned FIT Payment rights as nominated recipients, may complain or raise a dispute, although non-owners may still make certain information requests²⁴. For a household that has inherited panels with a property, or that rents a roof to a third party, that distinction decides who can act when payments or readings go wrong.

Generator obligations under the statement of FIT terms run for the duration of the eligibility period, and installation of battery storage with a FIT installation, or replacing or moving of metering, must be reported to the FIT licensee⁴. Those notification duties are the practical link between a household's own equipment and the supplier that pays it.

What independence looks like in practice

Independence from suppliers is best understood as a spectrum, and the evidence places most households partway along it.

At one end, a household buys everything and switches between suppliers for price. At the other, a household generates, stores, shifts load and exports, buying fewer units and selling some back. The second position is real and measurable: 870,164 installations and 6.5 GW of capacity on the FIT scheme, 829,651 of them domestic⁶. It is also partial. The same scheme pays through licensed suppliers, and the same household still pays for a connection.

What remains fixed is worth stating plainly. The grid connection, the standing charge, metering and settlement are not optional for a connected home. Gas remains the dominant heating fuel for most homes, and the national fossil fuel share of 75.2% in 2024 describes the supply a household is drawing on when its own generation is short¹. The UK is a net energy importer with a high dependence on gas and oil, and that dependence is national before it is personal².

What a household can change is the quantity and the timing. The Demand Flexibility Service exists to make it easier for homes and businesses to take part in the electricity market and be rewarded for shifting when they use electricity⁵. That is a description of partial independence: participation in the market, not exit from it.

The practical position is that a household can reduce its reliance on any single supplier through switching, and reduce its reliance on suppliers as a class through generation, storage and load shifting. It cannot remove the connection, and it should not expect to. The Energy Ombudsman is an independent service, separate to Ofgem, for problems with an energy supplier, an energy broker, a network operator or a heat network supplier, and it is free for consumers⁸. That free route is itself part of the structure that keeps the relationship workable.

For households weighing the wider supplier landscape, the UK energy suppliers pillar sets out who supplies gas and electricity, and energy supplier market share shows how concentrated the market remains. Households in the separate Northern Ireland market are covered by energy suppliers in Northern Ireland, and those considering generation should read green energy tariffs alongside the export rules above.