5 Green R&D Projects That Claimed Tax Relief

R&D tax relief supports UK companies working on innovative projects, including green technology. Since April 2024, most businesses use the R&D Expenditure Credit (RDEC) scheme, which offers a 20% credit on qualifying R&D costs. This typically translates to a net benefit of 15p per £1 spent. SMEs spending over 30% of their costs on R&D may claim up to 27% credit under Enhanced R&D Intensive Support (ERIS).

Here are five examples of how UK companies leveraged this scheme for green innovation:

• EcoHeat UK: Developed advanced solar thermal panels, tackling challenges in thermal storage and renewable configurations.
• GreenWrap Ltd: Created fully recyclable moisture barrier paper to replace plastic-coated materials.
• OceanWind Solutions: Improved offshore wind turbine efficiency and durability.
• ClearAir Innovations: Advanced carbon capture technology for scalable CO2 reduction.
• UrbanGrow Technologies: Designed vertical farming systems to reduce energy use and improve crop yields.

These projects highlight how R&D tax relief helps businesses offset costs, enabling them to innovate and address challenges in green technology. To qualify, companies must document their technical goals, challenges, and results - including failures. Claims require an Additional Information Form and must be submitted within six months of the accounting period.

Quick Tip: If your company works on renewable energy, waste reduction, or sustainable processes, you may already qualify. Detailed records are essential for a successful claim.

1. Solar Thermal Panel Development by EcoHeat UK

Qualifying R&D Activities Under HMRC Guidelines

EcoHeat UK’s work on solar thermal panels met HMRC’s criteria for R&D by addressing complex scientific and technological challenges. The focus was on creating and refining thermal systems with performance levels that had not been proven before.

The project involved several qualifying activities, such as detailed planning, scientific system design, rigorous testing, and in-depth analysis. Additionally, the team created bespoke software and modified equipment specifically for their R&D needs - elements that HMRC recognises as eligible for relief. These efforts were instrumental in achieving measurable progress.

Innovation Outcomes and Scalability

The project led to a significant step forward in renewable energy technology, benefiting not just EcoHeat UK but the broader industry as well. By addressing uncertainties related to advanced thermal storage and renewable energy configurations, the outcomes have the potential to positively impact the wider solar thermal sector.

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2. Biodegradable Packaging Innovation by GreenWrap Ltd

Environmental Impact of the Project

GreenWrap Ltd has taken a major step in addressing plastic waste by replacing PE-laminated sheets with fully recyclable moisture barrier paper. This shift not only tackles the issue of plastic waste but also simplifies recycling processes. The goal was to replicate the moisture resistance of PE-laminated paper while ensuring the new material could be completely repulpable and recyclable.

Qualifying R&D Activities Under HMRC Guidelines

This project met HMRC's R&D criteria by confronting uncertainties in materials science. GreenWrap Ltd's efforts focused on creating a coating that combined styrene–butadiene rubber (SBR) latex with plate-like fillers. They explored the Maxwell tortuous effect to refine filler orientation, enhancing water vapour resistance. Additionally, they examined the interaction between latex and fillers to strengthen barrier properties.

Challenges with wax-based coatings, such as "bleed out" and content transfer, were also addressed. These efforts qualified as R&D because the solutions were not readily apparent to professionals in the field. The key question was whether waterborne synthetic resins could achieve high moisture resistance without the environmental impact of plastic or the performance limitations of wax coatings.

Innovation Outcomes and Scalability

The project successfully developed a material that matches the performance of PE-laminated paper while being far more environmentally friendly. This innovation has clear potential in industries like construction and food packaging, where moisture barriers are critical.

Qualifying costs for the R&D claim included researcher salaries, materials used in prototyping (such as SBR latex and fillers), and consumables like heat and power during trials. This outcome highlights how R&D tax relief can support sustainable advancements across various sectors.

3. Offshore Wind Turbine Efficiency Project by OceanWind Solutions

Environmental Impact of the Project

OceanWind Solutions tackled some of the toughest challenges in offshore wind technology, helping to advance the UK’s journey towards its net-zero goals. The project focused on improving the efficiency and durability of wind turbines, addressing issues like turbulence and fatigue that often limit their lifespan and energy output. By creating mounting systems capable of withstanding unusual wind loads, the project not only boosted energy efficiency but also reduced waste.

Qualifying R&D Activities Under HMRC Guidelines

In addition to its environmental contributions, the project addressed significant R&D uncertainties, aligning with HMRC’s guidelines for tax relief. OceanWind Solutions developed and tested new turbine configurations, which presented performance outcomes that couldn’t be reliably predicted based on existing knowledge. Their innovative mounting systems tackled complex challenges like atypical wind loads and turbulence - problems that go beyond standard engineering practices - marking a clear technological step forward. Importantly, even when some experimental approaches didn’t succeed, the project still qualified for R&D tax relief, as success isn’t a requirement under HMRC rules. Detailed records of technical goals, design changes, and experimental results were kept to support their claim.

Innovation Outcomes and Scalability

The R&D efforts paid off with practical improvements in turbine performance. The new mounting systems increased both durability and efficiency under harsh offshore conditions, with the potential to scale these solutions across the broader wind energy sector. Eligible costs included staff salaries (including employer NICs and pension contributions), materials used in prototyping, and software licences for simulations and modelling. Under the updated R&D scheme starting from 1 April 2024, the company can claim a 20% credit on qualifying expenses, resulting in a net benefit of about 15p for every £1 spent. This example highlights how UK companies are using R&D tax relief to push forward sustainable technology.

4. Carbon Capture Technology by ClearAir Innovations

Environmental Impact of the Project

ClearAir Innovations has created a carbon capture technology designed to curb CO2 emissions, aligning with the UK's ambitious net-zero targets. The project tackled challenges related to the stability and efficiency of carbon sequestration, aiming to move carbon capture from controlled lab settings to scalable, practical applications. These efforts are expected to lead to measurable reductions in emissions.

Qualifying R&D Activities Under HMRC Guidelines

The project qualified for R&D tax relief by addressing significant scientific uncertainties in the field of carbon capture. Even with expert analysis, the results of ClearAir's innovative capture and storage techniques were not guaranteed. The company developed new methods for CO2 capture and explored carbon utilisation systems that presented unpredictable outcomes. To meet HMRC's requirements, the team kept detailed records of their technical goals, design processes, and experimental findings - including instances of failure. These records played a crucial role in justifying the claim under HMRC's scrutiny. This rigorous documentation supported their efforts to improve carbon capture efficiency.

Innovation Outcomes and Scalability

ClearAir's R&D efforts led to practical improvements in carbon capture efficiency, with applications that could benefit heavy industries. Costs eligible for relief included staff wages, essential consumables, and software licences. Through the merged R&D scheme, ClearAir claimed a gross credit of 20%, translating to around 15p net for every £1 spent on qualifying R&D activities. This example highlights how cleantech companies are leveraging R&D tax relief to tackle some of the UK's most challenging engineering problems while easing their tax liabilities.

5. Vertical Farming Systems by UrbanGrow Technologies

Environmental Impact of the Project

UrbanGrow Technologies has created vertical farming systems that boost crop yields while cutting energy use. By using optimised LED tuning and smart controls, they’ve significantly lowered the carbon footprint associated with traditional farming methods and long-distance food transport. This initiative aligns closely with the UK's net-zero ambitions.

Qualifying R&D Activities Under HMRC Guidelines

The project tackled complex scientific and technological challenges. UrbanGrow's team focused on solving intricate bioengineering issues, such as the interplay between nutrient delivery, lighting, and plant growth. Their qualifying R&D activities included designing innovative hydroponic systems, customising LED setups for specific crop needs, and developing automated control algorithms. To comply with HMRC guidelines, they maintained thorough technical documentation throughout the project.

Innovation Outcomes and Scalability

UrbanGrow successfully developed systems that enhance growth cycles while keeping electricity costs down. When scaled up, the systems demonstrated their ability to handle challenges beyond standard commercial operations. Under the merged R&D scheme, UrbanGrow claimed a 20% headline credit on qualifying expenses, which included staff wages, software licences, and necessary consumables. This translated to a net benefit of about 15p for every £1 invested. Their achievement highlights how R&D tax relief can support eco-friendly innovations across the UK.

Conclusion

These examples highlight how R&D tax relief plays a crucial role in advancing green innovation across the UK. From solar thermal panels to vertical farming, businesses in various sectors have used this scheme to offset the financial risks tied to developing sustainable technologies. Whether a project succeeds or encounters setbacks, the relief helps minimise losses while encouraging companies to overcome the technological challenges that stand in the way of achieving net-zero goals.

Under the consolidated R&D scheme, companies receive a net benefit of approximately 15p for every £1 spent, while loss-making, R&D-intensive SMEs (where 30% or more of expenditure is on R&D) can claim up to 27%. As Ryan Sian, Managing Director of RandD UK, puts it:

The R&D schemes, used appropriately, are an important tool to achieve net-zero targets.

This financial support is a springboard for further innovation.

If your company works on renewable energy, carbon capture, sustainable materials, or waste-reduction processes, you might already be conducting qualifying R&D activities. The key is to maintain detailed records of your technical objectives, design iterations, and test results - including failures - to strengthen your claim. For first-time claimants, it's important to notify HMRC within six months of the end of your accounting period. All claims must include an Additional Information Form outlining the scientific advances and uncertainties tackled.

Navigating HMRC compliance can be challenging. For businesses seeking expert help, Zest R&D Tax Advisors offers end-to-end support for R&D tax relief claims. They operate on a no-win-no-fee basis, with discounted rates for green R&D projects, and typically complete documentation within two weeks.

R&D tax relief fuels the next wave of innovation. Companies reinvest tax credits to hire talent, speed up development, and scale sustainable solutions. With HMRC processing claims in approximately 40 days, the scheme injects much-needed funding to drive green progress. Together, these efforts demonstrate how strategic financial support is accelerating the UK's journey towards a sustainable future.

FAQs

What counts as “qualifying R&D” for HMRC in green projects?

Qualifying R&D activities for HMRC focus on pushing the boundaries of science or technology by tackling uncertainties that can't be easily solved. These activities should aim to develop or make substantial improvements to a process, material, device, product, or service. The ultimate goal is to achieve a meaningful step forward in knowledge or capability within the specific field.

Which costs can I include in an RDEC or ERIS claim?

When calculating your RDEC or ERIS claim, you can account for several types of costs, including:

• Staff wages: Salaries paid to employees directly involved in the project.
• Consumables: Materials and supplies used up during the project.
• Software: Costs associated with software essential to the work.
• Utilities: Expenses like electricity and water directly tied to the project.
• Subcontractor payments: If you're working with subcontractors, note that only 65% of their costs can be claimed if they are unconnected to your business.

These categories are essential for ensuring your claim is both accurate and adheres to the necessary guidelines.

What records do I need to support an R&D tax relief claim?

To make a strong case for R&D tax relief, it's essential to keep thorough and organised records. These might include project reports, timesheets, invoices, and documentation that outlines your activities. The key is to ensure these records clearly show how your R&D efforts aimed to tackle scientific or technological uncertainties. Keeping everything detailed and accurate not only strengthens your claim but also helps you stay in line with HMRC's requirements.

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