ECO4 Extension: Opportunity or Risk for the Energy Efficiency Sector?

The government’s recent consultation on extending the Energy Company Obligation (ECO4) has attracted less discussion across the industry than I expected. That’s surprising, given the implications could be significant for everyone involved in delivering energy efficiency measures, from installers and local authorities to the people it impacts most, the public.

At first glance, a six to nine-month extension may seem positive. It gives households more time to benefit from energy upgrades and installers a longer window to complete ECO4 measures. It also provides continuity while new obligations are prepared. Looking more closely at the detail, though, some clear challenges emerge.

One of the most immediate concerns is that whilst the consultation proposes extending ECO4, it doesn’t increase supplier obligations or create new avenues of funding. This leads to an important question: how can local authorities and installers deliver more with the same limited resources?

This question matters because the UK has ambitious targets for cutting emissions and tackling fuel poverty. Both rely on a robust, motivated supply chain delivering insulation, heating upgrades, and renewable technologies at scale.

The absence of a longer-term roadmap risks holding back growth in a supply chain that’s urgently needed. Some installers, manufacturers, and local partners may hesitate to invest in people, training, and infrastructure if the financial certainty they require isn’t there. Without clear commitments, confidence across the sector could fall at the very time it’s needed most.

ECO has delivered millions of measures since its inception, transforming homes and lives in the process. However, the way this extension and transition from ECO4 are managed will set the tone for the next phase of energy efficiency policy.

If done well, this extension could act as a bridge to more substantial, more ambitious commitments. If mishandled, it risks undermining the confidence of those who are essential to delivering Net Zero.

Jon Furlong, Head of ECO