Green Business Grants UK 2026: Funding for Net Zero and Sustainability

Why Green Funding Is Growing

The UK's legally binding commitment to reach net zero by 2050 has fundamentally changed the shape of public funding. Across central government, Innovate UK, local authorities, and sector-specific bodies, grants are increasingly weighted toward businesses that reduce carbon, improve energy efficiency, or enable decarbonisation in their supply chains.

This is not a temporary trend. Between 2026 and 2030, the share of public funding directed at climate-related outcomes is expected to grow significantly. For businesses, this means two things: if your project has a genuine environmental benefit, your chances of grant success are materially better than they were even two years ago. And if you are not yet thinking about sustainability, you are increasingly competing for a shrinking pool of non-green funding.

Green grants span a wide range of sources and purposes. Some fund capital equipment like heat pumps and solar panels. Others support R&D into new clean technologies. Many local schemes cover simpler improvements like LED lighting, insulation, and energy audits. This guide covers the main programmes available in 2026 and how to access them.

The Boiler Upgrade Scheme (BUS)

The Boiler Upgrade Scheme is one of the most accessible green grants available to UK businesses. It provides grants of up to £7,500 per installation for air-source or ground-source heat pumps, available to businesses in England and Wales that are replacing fossil fuel heating systems.

Two important changes took effect from April 2026. First, the EPC requirements have been relaxed — properties no longer need to meet insulation recommendations before applying for a heat pump grant. This removes a significant barrier that previously excluded many older commercial properties. Second, the reimbursement process has been simplified: MCS-certified installers now deduct the grant directly from the invoice at point of sale, meaning businesses no longer need to fund the full cost upfront and claim back later.

Multi-site installations are also now permitted, with combined capacity up to 300 kWth for shared ground loop systems. This is particularly relevant for businesses operating across multiple premises or for landlords managing commercial property portfolios.

To apply, you work through an MCS-certified installer rather than applying directly to government. The installer handles the grant paperwork and deducts it from your bill. The scheme has been extended to 2028, so there is no immediate rush — but installer capacity is limited, and booking early is advisable.

Innovate UK Green Competitions

Innovate UK runs multiple concurrent funding competitions for green innovation throughout the year. These are competitive grants — you submit a proposal and it is assessed against other applications — but the success rates for well-prepared green technology applications are generally higher than for non-green competitions.

Areas regularly funded include energy efficiency, renewable energy systems, industrial decarbonisation, clean transport, zero-emission vehicles, agri-tech sustainability, and circular economy innovations. Typical grant sizes range from £25,000 for feasibility studies up to £2 million or more for collaborative R&D projects involving multiple partners.

Competitions open and close throughout the year, with deadlines typically four to eight weeks after launch. The most effective approach is to monitor the Innovate UK portal regularly and have a strong project outline ready so you can respond quickly when a relevant competition opens.

Innovation Loans are also available for late-stage green R&D, ranging from £100,000 to £2 million. These are repayable on favourable terms — no interest during the R&D phase, with repayment starting only after the product reaches market. They suit businesses that have completed initial research and need funding to develop a commercial prototype.

You can search our grants database to find current Innovate UK competitions filtered by sector and region.

Energy Efficiency and Decarbonisation Schemes

Beyond the Boiler Upgrade Scheme, several programmes target energy efficiency improvements for businesses of different sizes and sectors.

Industrial Energy Transformation Fund (IETF)

The IETF is aimed at energy-intensive industries — manufacturing, food processing, chemicals, glass, ceramics, and similar sectors with high energy consumption. It covers both feasibility studies (to assess potential energy savings) and capital deployment grants (to implement proven efficiency measures). Grants can cover up to 50% of eligible costs for feasibility studies and up to 30-40% for capital projects.

Local Authority Energy Efficiency Grants

Many local authorities have operated energy efficiency grant schemes for small businesses, often funded through the UK Shared Prosperity Fund. Since the UKSPF ended in March 2026, these schemes are now winding down — but some councils still have underspent allocations to deploy before the September 2026 completion deadline. It is worth checking with your local authority whether any final rounds remain open. For more detail on what replaces the UKSPF, see our article UKSPF Has Ended: What UK Small Businesses Need to Know.

SME Climate Hub

The SME Climate Hub is a free, globally backed initiative that provides tools and resources for small businesses committing to halve their emissions by 2030 and reach net zero by 2050. While it does not provide direct funding, it offers free carbon measurement tools, action plans, and a recognised commitment badge that can strengthen grant applications by demonstrating your business takes sustainability seriously.

Carbon Trust Green Business Fund

The Carbon Trust offers free energy assessments and implementation support for eligible SMEs. An assessor visits your premises, identifies energy-saving opportunities, and provides a costed action plan. For some businesses, the assessment leads directly to funded improvements. Eligibility varies by region and sector, but it is worth checking whether your business qualifies — the assessment alone can identify significant cost savings.

Sector-Specific Green Grants

Several green funding programmes target specific industries. If your business operates in one of these sectors, you may have access to funding that general business grant programmes do not cover.

Agriculture

DEFRA's Farming Equipment and Technology Fund provides grants for equipment that improves productivity and environmental performance on farms. ADOPT grants support farming businesses in England to trial new approaches to soil health, nutrient management, and biodiversity. Both programmes are open to farms and agricultural businesses of all sizes.

Transport

Funding is available for zero-emission vehicles, fleet electrification, and charging infrastructure. The clean maritime programme supports innovation in low-carbon shipping. If your business operates a vehicle fleet, there are grants and tax incentives for transitioning to electric or hydrogen vehicles.

Construction and Property

Retrofit grants support building energy performance improvements, including insulation, glazing, heating system upgrades, and renewable energy installations. These are particularly relevant for landlords, property managers, and construction firms. The Minimum Energy Efficiency Standards (MEES) regulations continue to tighten, making energy upgrades increasingly necessary rather than optional.

Manufacturing

Advanced Manufacturing Supply Chain grants support decarbonisation across manufacturing supply chains. Industrial digital technology programmes fund the adoption of sensors, monitoring systems, and process optimisation tools that reduce energy waste. If your manufacturing processes are energy-intensive, these programmes can fund the transition to more efficient operations.

All of these sector-specific grants are searchable in our database by sector — browse grants by sector to find what applies to your industry.

Scotland, Wales, and Northern Ireland

Each devolved nation runs its own green funding programmes alongside UK-wide schemes. If your business is based outside England, you may have access to additional support.

Scotland

The Scottish Heat Network Fund provides capital grants for businesses and organisations developing heat networks. Scottish Enterprise offers green innovation support including R&D grants for clean technology development. Zero Waste Scotland runs programmes supporting circular economy adoption, waste reduction, and resource efficiency for Scottish businesses.

Wales

The Development Bank of Wales offers green loans for businesses investing in energy efficiency, renewable energy, and sustainability improvements. Business Wales provides free sustainability support including advice, workshops, and signposting to available funding programmes.

Northern Ireland

Invest NI runs energy efficiency programmes for Northern Irish businesses, including grants for energy audits, equipment upgrades, and process improvements. The programmes cover a range of sectors and business sizes, with particular support available for manufacturing and food processing businesses.

How to Find and Apply

Green grant programmes change frequently. New competitions open, deadlines pass, and local schemes launch without much fanfare. The most effective strategy is to stay informed and move quickly when a relevant opportunity appears.

• Start with your local Growth Hub. They signpost to available green schemes in your area and often have early visibility of programmes before they are widely advertised. See our Growth Hub Grants Explained guide for a region-by-region overview.
• Check our grants database regularly. We monitor 35+ official funding sources including Innovate UK, Growth Hubs, and devolved agencies. Browse all grants to see what is currently available in your region and sector.
• Quantify the environmental impact.When applying, spell out the CO₂ savings, energy reduction, or waste diverted in concrete numbers. Assessors want to see measurable outcomes, not vague commitments.
• Show financial viability alongside green benefits. A strong green grant application demonstrates both environmental impact and commercial sustainability. Show that the investment makes business sense beyond the grant period.
• Have match funding ready.Many green grants require match funding, typically 30–50% of the total project cost. Ensure your contribution is confirmed before applying — applications without credible match funding are rarely successful.
• Read our application guide. For a detailed walkthrough of the grant application process, see How to Apply for Grants.

The Bottom Line

Green funding is the fastest-growing category of UK business grants. Whether you are developing breakthrough clean technology or simply want to replace an aging boiler with a heat pump, there is likely a scheme that can help fund the transition.

Even if your business is not in a traditionally “green” sector, energy efficiency and digital adoption grants can reduce operating costs and improve competitiveness. A manufacturing firm that cuts its energy bill by 20% through funded equipment upgrades is a greener business and a more profitable one.

The landscape is changing quickly. New programmes are launching, old ones are closing, and the balance of funding is shifting toward sustainability outcomes. Staying informed is the first step. Create a free profile on Subsidy Scanner to get matched with green grants automatically as they become available.