"Government Reveals Outcomes of Overwhelming CfD AR6 Bid Auction – Renewable Energy Advancement"
The renewable energy sector in the UK is witnessing significant growth, bolstered by government support and investment. Following the recent CfD Allocation Round 6 (AR6) auction and consultations on the National Energy System Operator (NESO), the UK is poised to expand its renewable capacity, particularly in offshore wind and solar energy.
CfD AR6 Auction and Renewable Investment
The UK government has announced a clear framework for the next clean power auction (CfD Round 7), building on AR6. This auction will extend Contracts for Difference from 15 to 20 years, improving project financing viability. Unconsented fixed-bottom offshore wind projects can now bid under strict criteria, increasing eligible offshore wind capacity to 20 GW, surpassing existing capacity. These projects are crucial to meet the government’s Clean Power by 2030 target and improve energy security.
Renewable Energy Generation Milestone
In 2024, renewables accounted for over 50% of the UK’s electricity generation for the first time, with wind, solar, and bioenergy all contributing to this milestone. This record renewable output signals a positive trend ahead of the upcoming auctions and infrastructure developments.
Solar Roadmap and Capacity Targets
The government’s Solar Roadmap 2025 aims to more than double solar capacity from 19 GW (May 2025) to 45–47 GW by 2030 through over 70 supportive actions. These include mandatory solar on new homes from 2025, grid and planning reforms to speed connections, and incentives for commercial and public sector rooftop solar. However, there is growing local opposition to new solar farms in some regions due to concerns over land use, biodiversity, and local character, presenting a political and planning challenge.
Grid and Transmission Developments
SSEN’s increase in the Transmission Impact Assessment threshold helps manage grid connection processes, potentially easing constraints for renewable projects. Meanwhile, Ofgem’s consultations on the NESO aim to coordinate electricity system planning and operation more effectively, which is crucial as renewables scale up, though detailed outcomes from these consultations are pending.
Biomass Energy Trends
Biomass energy output has declined in early 2025 due to planned subsidy reductions and raised sustainability criteria, signaling a strategic shift favoring wind and solar over biomass in the renewable mix.
Notable Projects and Developments
- The Viking Wind Farm on the Shetland Islands has boosted the UK's wind generation capacity by 443MW, pushing it past the 30GW milestone.
- Funding has been allocated to the 400MW Green Volt floating offshore wind project, with a strike price of £139.93/MWh.
- The Clean Growth Hub at the Port of Barry is encouraging businesses to register interest if they are specialists in rare earth processing, battery material manufacturing, net zero manufacturers, or developing carbon capture and utilisation business models.
- Associated British Ports (ABP) and px Group have announced plans for a Clean Growth Hub at the Port of Barry, aiming to transform an area of the operational port into a low-carbon, high-growth infrastructure investment area.
Overall, the UK is on track to expand renewable capacity rapidly, particularly in offshore wind and solar energy, supported by government auctions and policy frameworks. The success of these projects will depend on overcoming grid connection challenges, navigating local opposition, and ensuring timely deployment to meet 2030 decarbonization goals.
In the anticipated CfD Round 7, the UK government plans to extend Contracts for Difference from 15 to 20 years, hence improving the financing viability of renewable energy projects, particularly in the finance and energy sectors.
Witnessing a significant growth in the renewable energy sector, the UK aims to double solar capacity from 19 GW (May 20225) to 45–47 GW by 2030, thereby impacting both the energy and finance industries.
