Most energy-saving advice focuses on using less electricity. The Demand Flexibility Service takes a different approach: it doesn’t ask you to use less full stop, it asks you to shift when you use it — and pays you for doing so.

The scheme has been running in various forms since winter 2022, but 2026 has brought significant changes that make it more accessible, more consistent, and more relevant to both households and small businesses. Over 2.46 million homes and businesses had signed up as of March 2026. If you’re not among them, it’s worth understanding what you’re missing.

What the Scheme Actually Is

The National Energy System Operator (NESO) runs the Demand Flexibility Service as a mechanism for balancing the electricity grid without building new peaker plants or curtailing renewable generation. When there’s more electricity on the grid than demand can absorb — which happens increasingly often as wind and solar capacity grows — the operator has historically had to pay generators to switch off. When demand spikes, it has had to bring expensive, carbon-intensive generation online.

The DFS turns energy customers into an alternative. Instead of switching off a gas turbine, NESO can pay thousands of households and businesses to shift their consumption — run the dishwasher at 11pm instead of 7pm, charge the car overnight, delay the industrial process until the grid is less stressed.

The reward passes through your energy supplier. When a DFS event is called, your supplier notifies you (usually via an app), tells you the time window to reduce or increase consumption, and credits your account if you successfully shift your usage. The amount varies by event and supplier, but participants have reported credits in the range of 50–200 pence per kilowatt-hour shifted, which adds up meaningfully if you have flexible loads like EV charging or a heat pump.

What’s Changed for 2026

The scheme has evolved quite a bit from the emergency winter measure it started as. A few things are different in 2026.

Year-round events. DFS events now run throughout the year, not just in winter. That means more opportunities to earn, though events are less predictable — they’re driven by real-time grid conditions rather than scheduled in advance.

Rewards in both directions. Originally, the scheme only rewarded demand reduction. The updated version also rewards demand increase at specific times — using more electricity when there’s excess renewable generation on the grid that would otherwise be wasted. If you have a battery, a heat pump, or a large EV charger, this is particularly relevant.

Broader supplier participation. The eligibility threshold for suppliers to participate dropped from 1MW to 0.1MW of aggregated demand, which opened the scheme to smaller energy suppliers and aggregators. More suppliers now offer DFS-linked products, including Octopus Energy, OVO, EDF, and several smaller providers.

12 regional zones. Events now target specific regions rather than applying nationally, which means flexibility is directed where the grid actually needs it rather than triggering a national response to a local constraint.

Who’s Eligible and What You Need

You need two things to participate: a smart meter and a compatible tariff.

Smart meters are the essential building block — they provide the half-hourly consumption data that confirms you actually shifted your usage during an event. If you don’t have one, your supplier can arrange installation for free. It’s worth getting one regardless of DFS participation; the usage visibility alone is useful.

The tariff question is where it gets a bit more varied. Not all standard fixed tariffs are DFS-compatible. Time-of-use tariffs like Octopus Agile or OVO’s Charge Anytime product for EV owners are typically structured to work with flexibility schemes. Some suppliers have specific DFS opt-in products. Check with your current supplier what they offer.

For businesses, the picture is slightly different. Larger commercial customers with significant flexible load (manufacturing equipment, commercial refrigeration, EV fleet charging) can participate through aggregators who pool multiple customers’ demand. The economics can be more substantial at commercial scale, particularly for businesses with predictable patterns of flexible consumption.

How Much Can You Actually Earn?

This is the question everyone asks, and the honest answer is: it depends heavily on what flexible loads you have.

A typical household with just a few lights to turn off and no EV or heat pump will probably earn very little. DFS rewards are proportional to how much consumption you shift, measured against your baseline usage in that time period. If you can only shift 0.3kWh, the credit is a few pence per event.

The households and businesses that do well from DFS are those with substantial flexible loads they can control:

  • EV owners who can shift overnight charging
  • Heat pump owners who can run heating cycles outside peak times (and store heat in their home’s thermal mass or a hot water tank)
  • Households with home battery storage who can shift charge/discharge cycles
  • Small businesses with equipment that can be rescheduled without operational disruption

If you’re in that category, a busy DFS winter season with frequent events can generate credits of £50–£200+ over several months, depending on your tariff structure and how many events run in your region.

The Smart Meter Upsell

One thing that often gets missed: the Demand Flexibility Service is one of several schemes that become accessible once you have a smart meter installed. Smart Export Guarantee payments, time-of-use tariff savings, and DFS all require half-hourly metering.

If you’ve been putting off the smart meter upgrade because the installation felt like a hassle, the combination of these schemes makes it increasingly worthwhile. Installation is free under the government’s smart meter rollout programme, and most suppliers can arrange it within a few weeks.

The grid is going to need more demand flexibility as renewable penetration increases and we move more of heating, transport, and industry onto electricity. The DFS is an early version of what will eventually be a much larger consumer-side flexibility market. Getting set up now means you’ll be well positioned as the scheme evolves and rewards potentially increase.