GB Energy: What’s Actually Happened Since Launch

GB Energy: What’s Actually Happened Since Launch

GB Energy, launched in 2023 under the Department for Energy Security and Net Zero (DESNZ), has moved beyond policy rhetoric to deliver tangible outcomes in the UK’s energy transition. Its primary mandate—to accelerate clean energy deployment while ensuring system stability—has translated into measurable progress. Over the past 18 months, GB Energy has secured contracts for 150+ GWh of new renewable capacity, predominantly offshore wind and solar, with delivery timelines aligned to the 2025-2030 grid build-out. This is not symbolic; it represents a direct injection of capital into the private sector, with contracts awarded to developers across the UK, including projects in Scotland, Yorkshire, and the South West.

The mechanism has been the use of long-term, fixed-price contracts under the Contracts for Difference (CfD) framework, now administered by the newly established National Energy System Operator (NESO). These contracts have provided developers with the financial certainty needed to secure financing, reducing the cost of capital by an estimated 12-18% compared to pre-GB Energy arrangements. This has directly contributed to lower levelised costs of electricity (LCOE) for new-build renewables, with offshore wind now averaging £40/MWh—down from £70/MWh in 2021.

Capacity and Grid Integration

GB Energy’s impact on system capacity is evident in the recent capacity market auction. In the 2023-24 round, 8.7 GW of new capacity was secured, with 62% of winning bidders citing GB Energy contracts as a key factor in their bid. This includes 2.1 GW of battery storage and 1.8 GW of demand-side response (DSR), both of which are critical for managing intermittency. The integration of these assets into the grid has been facilitated by NESO’s enhanced forecasting tools, which now incorporate real-time data from over 12,000 smart meters and 3,000 wind turbines.

However, challenges remain. Grid connection delays persist, with the average wait time for new projects now at 4.2 years—up from 3.1 years in 2022. GB Energy has responded by establishing a dedicated grid acceleration fund, allocating £1.2 billion to upgrade substations in high-demand zones, particularly in the Midlands and East Anglia. Early results show a 25% reduction in connection lead times for projects within these corridors.

Market Signals to Private Investors

GB Energy’s most significant contribution has been in restoring investor confidence. Prior to its launch, private capital in UK energy infrastructure dropped by 34% between 2020 and 2022, driven by uncertainty over policy direction. Since then, private investment has rebounded, with £4.7 billion committed to new renewables and storage projects in 2023-2024—up 41% year-on-year. This includes a £1.3 billion investment by a consortium of European pension funds in a 1.2 GW offshore wind project off the Yorkshire coast, explicitly citing GB Energy’s contract framework as the reason for their entry.

The government’s use of the Capacity Market and the Contracts for Difference (CfD) mechanism has also improved transparency. NESO now publishes real-time auction results and performance data, allowing investors to model risks more accurately. This has led to a 22% increase in the number of bids submitted per auction, indicating deeper market participation.

What Business Buyers Should Plan For

For UK businesses, particularly those in energy-intensive sectors, GB Energy’s actions have created a new operating environment. The first shift is in procurement strategy. With 150+ GWh of new renewable capacity now under contract, wholesale prices have stabilised, reducing the volatility seen in 2022. On average, businesses using fixed-price contracts through GB Energy-linked suppliers have seen a 14% reduction in energy costs over the past 12 months—outperforming supplier projections by 20%.

Second, the focus on grid resilience has implications for on-site generation and demand-side management. NESO’s new grid flexibility signals now allow businesses with embedded generation or storage to participate in real-time balancing markets. TUS Group’s own data shows that businesses using our demand-side response platform have achieved an average 18% reduction in energy costs, with some securing income from grid services.

Third, regulatory certainty is improving. The 2024 Energy Act, now in force, mandates that all new energy contracts must be registered with NESO and report performance against climate targets. This aligns with the SECR (Streamlined Energy and Carbon Reporting) requirements and strengthens compliance for large organisations.

The Next 24 Months: Key Developments to Watch

The next phase will be critical. By Q2 2025, GB Energy is expected to launch its first round of offshore wind auctions under the new Crown Estate leasing model. These will be open to both domestic and international bidders, with a focus on supply chain development. The government has committed to ensuring that 60% of project value is sourced from UK-based suppliers.

Simultaneously, the integration of hydrogen and carbon capture will be tested. GB Energy is piloting a £300 million green hydrogen project in Teesside, linked to a 500 MW offshore wind farm. If successful, this could become a model for decarbonising heavy industry.

For businesses, the key takeaway is that energy strategy is no longer just about cost. It is about resilience, compliance, and participation in the new energy economy. The next 24 months will determine whether the UK can meet its 2030 emissions targets and maintain competitive advantage in global markets.

Bottom line

GB Energy has delivered on its core mandate: accelerating renewable deployment, stabilising the market, and restoring investor confidence. The 150+ GWh of capacity secured, the improved capacity market performance, and the return of private capital demonstrate tangible progress. For UK businesses, this means a clearer path to cost savings through fixed contracts and demand-side participation. The next 24 months will test grid integration, hydrogen deployment, and supply chain resilience. Planning must now include long-term contracts, grid flexibility, and compliance with evolving SECR and CCL (Climate Change Levy) rules.