SECTOR ANALYSIS

Fuel Type Breakdown Britain’s electricity generation in June 2025 was led by wind, which contributed 31% of the energy mix, its highest June share in the past five years. This marked a 6-percentage point increase compared to June 2024 and was double the share recorded in June 2021, reinforcing wind’s growing dominance in the summer energy mix. Gas accounted for just 17% of electricity generation, its lowest June share in the past five years. This represented a 2-percentage point decline from June 2024, and a 50% drop compared to June 2021, highlighting continued progress in reducing reliance on fossil fuels. Solar generation rose by 2 percentage points year-on-year to reach 12%, its highest June contribution in the last five years. Biomass and storage also saw modest increases of 1 percentage point each compared to June 2024, contributing 8% and 2%, respectively, indicating incremental gains in both dispatchable renewable supply and energy flexibility. Nuclear contributed 15% to the mix, down 2 percentage points from June 2024 but consistent with its average performance over the past five years, maintaining its role as a stable, low-carbon baseload source. Hydropower remained steady at 1%, while coal remained absent from the generation mix for the second consecutive June, following its full phase-out. Electricity imports fell to 15%, a 4-percentage point decline from June 2024. While still notable, this decrease points to an improving balance between domestic generation and external supply. Zero-Carbon Sources & Carbon Intensity Zero-carbon sources, including wind, solar, nuclear, and hydro, delivered 61% of Britain’s electricity in June 2025, the highest June share in recent years and an 11-percentage point increase from June 2024. This increase in clean generation contributed to a further decline in carbon intensity, which fell to 98 gCO₂/kWh, 1% lower than the same month last year. Looking at broader trends, the 12-month rolling average for zero-carbon generation held steady at 51%, consistent with the previous 12-month period. Meanwhile, the rolling average carbon intensity dropped to 129 gCO₂/kWh, its lowest level in the past five years and 4% below the level recorded a year earlier, signaling sustained, long-term progress in grid decarbonisation despite short-term variability. Concluding Remarks June 2025 marked a significant step forward in Britain’s clean energy transition, with wind reaching its highest June share in five years and solar achieving a new seasonal peak. These gains, alongside growth in storage and biomass, pushed zero-carbon sources to a five-year high for the month and drove carbon intensity to one of its lowest recorded levels. The continued decline in gas and the absence of coal underscore the pace of decarbonisation. However, the slight drop in nuclear output, modest hydro performance, and the ongoing reliance on imports highlight areas where further progress is needed to strengthen domestic energy resilience. Sustained investment in renewable generation, grid flexibility, and energy storage will be key to building on this momentum and ensuring continued reductions in carbon intensity across all seasons. Britain's Electricity Summary Charts

edenseven are following trends in the renewable energy sector closely, as decarbonising the energy sector is vital for ensuring a sustainable future and achieving Net Zero. Considering the recent DESNZ quarterly update of the renewable energy planning database, we have produced a consolidated summary of projects in the United Kingdom that have received planning permission. We will continue to release updates each quarter. INSIGHT Over the past 12 months, the UK approved 690 solar PV projects, 19% lower than the previous 12-month period. Despite the decline in project numbers, the total approved energy capacity rose by 16%, reaching the highest level for solar PV granted planning permission in any 12-month period over the last 16 years. Onshore wind approvals increased, with 46 projects granted permission, up by 28% year-on-year. However, the total energy capacity from these projects fell by 33%, and the average capacity per project dropped by 47%, reflecting a shift toward smaller-scale onshore developments in the last 12-months. Offshore wind saw a 67% increase in project approvals, with five projects granted permission. Yet, total energy capacity fell by 61%, and the average capacity per project declined by 77%, marking a significant reduction in project scale. In total, the combined approved energy capacity from solar PV, onshore wind, and offshore wind over the last 12 months reached 6,745 MW, ranking fourth-highest across the past 16 years.

Fuel Type Breakdown Britain’s electricity generation in May 2025 was led by wind, which contributed 27% of the energy mix, its highest May share in the past five years. This marked an 8 percentage point increase compared to May 2024, reinforcing wind’s role as the backbone of Britain’s clean energy supply. Gas, on the other hand, accounted for just 20% of the electricity mix, down 5 percentage points from May 2024 and its lowest May contribution in five years. Notably, gas generation in May 2025 was half of that in May 2021, signalling measurable progress in reducing reliance on fossil fuels. Nuclear power contributed 15% to the mix, a figure that has remained relatively stable in recent years. While slightly below the 17% share seen in May 2022 and 2024, it matches contributions in May 2021 and 2023, reflecting a continued but stagnant role in the generation mix. Solar generation rose significantly, climbing 4 percentage points year-on-year to reach 12%, its highest May contribution in the last five years. This growth underscores solar’s expanding role in supporting seasonal energy demand. Biomass remained consistent, supplying 7% of Britain's electricity in May 2025, in line with its contribution in May 2024. Hydropower also maintained a consistent presence at 1%, though this was below the 2% observed in May 2022. Electricity imports fell slightly to 17%, down from 19% in May 2024, but still substantially above the 2% recorded in May 2022. Meanwhile, storage technologies contributed 2%, marking their highest May share in the last five years and reflecting incremental progress in energy flexibility. Coal remained absent from the generation mix in May 2025, following its complete phase-out from the grid. Zero-Carbon Sources & Carbon Intensity Zero-carbon sources, including wind, solar, nuclear, and hydro, delivered 57% of Britain’s electricity in May 2025, the highest May share in recent years and a 12 percentage point increase from May 2024. This boost in clean generation contributed to a notable reduction in carbon intensity, which fell to 106 gCO₂/kWh, 15% lower than the previous year. In longer terms, the 12-month rolling average for zero-carbon generation reached 50%, up 1% from April’s update but still 1% below the level seen one year earlier. In contrast, the rolling average carbon intensity sits at 129 gCO₂/kWh, the lowest level of the past five years, indicating gradual improvement despite short-term fluctuations. Concluding Remarks May 2025 saw a strong rebound in wind and solar generation, helping to push zero-carbon sources to their highest May share in recent years and driving carbon intensity to new lows. The continued decline in gas and the absence of coal signal real progress, although the stability of nuclear, combined with limited hydro output and a marginal decline in the 12-month rolling average energy generation from zero-carbon sources, highlight the importance of accelerating renewable deployment to maintain momentum. With imports still high and storage only beginning to scale, the data points to both achievements and remaining vulnerabilities. To ensure long-term resilience and carbon reduction, sustained investment in domestic renewables and flexible technologies will be essential. Britain's Electricity Summary Charts

Fuel Type Breakdown Britain’s electricity generation in April 2025 saw a notable shift, with gas reclaiming its position as the leading source of electricity generation. Contributing 26% of the energy mix, gas usage rose by nearly 10 percentage points compared to April 2024. Despite this, gas consumption remained below levels seen in April 2021, 2022, and 2023. The rise in gas was largely a response to a substantial drop in wind energy generation, which fell by more than 10 percentage points year-on-year to 22%. This was wind’s second-lowest April contribution in the last five years. The shortfall in wind output played a critical role in driving up reliance on fossil fuels, undermining progress toward a cleaner energy mix. Likely as a result of favourable weather conditions, solar generation rose sharply, from 6% in April 2024 to 11% in April 2025. This marks its highest April contribution in five years and highlights solar’s growing potential in Britain’s energy transition. Conversely, nuclear power continued to decline, contributing just 14% to the electricity mix, down from 16% the previous year and its lowest April share in half a decade. The consistent drop in nuclear output, coupled with weak wind performance, placed additional pressure on other sources to fill the gap. Biomass remained stable at 7%, matching its highest April contribution in the last five years, while hydropower fell slightly to 1%. Together, these sources provided limited compensation for the downturn in wind and nuclear output. Coal contributed 0%, following its complete phase-out in September 2024. For context, coal had still accounted for 1% of electricity generation in April 2024. Electricity imports increased by 3 percentage points to 18%, the highest April share in five years, suggesting growing reliance on cross-border supply to maintain grid stability. Similarly, storage technologies contributed 2% to the mix, their highest April level to date, signaling incremental progress in energy flexibility and resilience. Zero-Carbon Sources & Carbon Intensity Zero-carbon sources, comprising wind, solar, nuclear, hydro accounted for 46% of electricity generation in April 2025. This represented a 13% decline from April 2024, and was accompanied by a sharp rise in carbon intensity to 133 gCO₂/kWh, a 45% year-on-year increase. Over a longer timeframe, the 12-month rolling average for zero-carbon generation stood at 49%, down 2% from the previous year. Meanwhile, the 12-month rolling average carbon intensity stood at 131 gCO₂/kWh, only 8% lower than the year before and a sharp contrast to the 22% year-on-year reduction recorded ju st six months earlier in October 2024. This underscores a concerning stagnation in Britain’s clean energy momentum. Concluding Remarks April's mixed performance highlights a concerning slowdown in Britain's progress towards a decarbonised energy grid. The decline in the share of renewables over the last 12-months, coupled with only an 8% year-on-year reduction in carbon intensity, highlights a loss of momentum in decarbonising the grid. While the increased supply from solar and storage is a positive development, the decline in wind, nuclear and hyrdo is concerning. Although wind's decline may reflect temporary weather conditions, the broader trend signals an urgent need to ramp up investment into renewables. To restore progress toward a resilient, net zero power system and reduce dependence on imports, Britain must accelerate the deployment of renewables and strengthen its commitment to long-term energy security. Britain's Electricity Summary Charts

Fuel Type Breakdown In March 2025, gas was the leading source of Britain's electricity generation, contributing 31% of the energy mix, a 7% increase from March 2024. However, this was the second-lowest gas share for March in the last five years. Wind energy accounted for 26%, down 7% from March 2024. Solar contributed 7%, up 3% year-on-year, it's highest contribution for March in the previous five years. Hydro and storage maintained consistent contributions of 3% and 1%, respectively, matching their performance for every March in the last five years. Biomass contributed 5%, the same as March 2024; however, 3% below it's share in March 2021. Coal contributed 0%, following its phase-out in September 2024. For comparison, coal made up 1% of the mix in March 2024. Zero-Carbon Sources & Carbon Intensity Zero-carbon sources delivered 45% of Britain's electricity in March 2025 - 6% lower than March 2024 and the second-lowest March share in the past five years. This decline led to a higher carbon intensity, with emissions at 146 gCO₂/kWh, up 15% from March 2024. The rolling 12-month average for zero-carbon electricity remained at 50%, unchanged from the previous period, indicating stagnation in renewable integration. However, carbon intensity over this 12-month period continues to be the lowest of the past five years, at 127 gCO₂/kWh, and 14% lower than the previous 12-month period. Increasing renewable electricity generation remains crucial to achieving net-zero goals, enhancing energy security, and reducing reliance on imports. Britain's Electricity Summary Charts

edenseven are following trends in the renewable energy sector closely, as decarbonising the energy sector is vital for ensuring a sustainable future and achieving Net Zero. Considering the recent DESNZ quarterly update of the renewable energy planning database, we have produced a consolidated summary of projects in the United Kingdom that have received planning permission. We will continue to release updates each quarter. INSIGHT In 2024, the UK approved 592 solar PV projects , the third-highest of any year in the last 15 years. However, the energy capacity expected to be delivered by these projects is 24% lower than in 2023. 2024 ranked 11th out of the last 15 years for the total number of onshore wind projects granted planning permission. These projects will deliver the lowest energy capacity for onshore wind approved for any year in the last 15 years, and is down 59% year-on-year. Energy capacity from offshore wind projects granted planning permission in 2024 saw a 62% drop compared to 2023, despite the same number of projects being approved as the prior year. Overall, the total approved renewable energy capacity from wind and solar projects dropped by 43% compared to 2023 , with offshore wind seeing the steepest decline. However, the average capacity per solar PV project increased by 50% , while onshore and offshore wind saw reductions of 63% and 62% , respectively. These findings suggest that we are not implementing wind and solar renewable energy projects quickly enough in the UK to achieve a decarbonised energy network by 2030.

In February 2025, gas accounted for 33% of Britain’s electricity mix, making it the largest contributor, slightly ahead of wind energy, which supplied 32%. This marks a 6% increase in gas-generated electricity and a 3% decline in wind energy compared to February 2024. The highest-ever wind energy contribution for February was recorded in 2022, when it made up 40% of Britain's electricity mix. Solar, biomass, and storage delivered the same contributions as in February 2024, contributing 2%, 7% and 1% respectively. Nuclear energy saw a 1% increase, supplying 12% of Britain's electricity in February 2025 - its highest share for February in the past three years. However, this remains 2% below the levels recorded in February 2021 and 2022. Hydro contributed 2% of Britain’s electricity generation, a 1% decrease from its 3% share in February 2024. Coal, which was phased out of UK electricity generation in September 2024, contributed 0% in February 2025. For comparison, coal accounted for 1% of electricity generation in February 2024. Zero-carbon sources delivered 48% of Britain’s electricity in February 2025, 3% lower than in February 2024 and the third highest for February in the last five years. However, the rolling 12-month average for zero-carbon electricity remains at 50%, the highest of the past five years. The carbon intensity of electricity generation in February 2025 was 147 gCO₂/kWh, 11% higher than in February 2024 and the third highest of the last five years. Despite this, the rolling 12-month average carbon intensity stands at 126 gCO₂/kWh, the lowest in five years and 17% lower than the previous 12-month period. Increasing renewable electricity generation remains crucial to achieving net-zero goals, enhancing energy security, and reducing reliance on imports.

In January 2025 , gas accounted for 38% of Britain’s electricity mix, the highest contribution among all sources. This represented an 11% lead over wind energy and a 2% increase compared to January 2024. Wind energy, however, delivered its lowest January contribution in the past four years, comprising 27% of the energy mix. Nuclear and imports each saw a 3% increase, contributing 12% of Britain’s electricity generation. Contributions from solar, hydro, and biomass remained stable compared to January 2024, with solar and hydro each accounting for 2% and biomass 6%. Coal, which was phased out of UK electricity generation in September 2024, delivered 0% of electricity in January 2025. For comparison, coal contributed 2% in January 2024, equal to the individual shares of solar and hydro. Zero-carbon sources made up 43% of Britain’s electricity generation in January 2025 - the lowest proportion for January in the past four years. This was 4% lower than in January 2024 and 13% lower than January 2023. However, the rolling 12-month average for zero-carbon sources reached 51%, the highest of the past four years and 2% higher than the previous 12-month period. The carbon intensity of electricity generation in January 2025 was 168 gCO₂/kWh, the second highest of the past four years. Despite this, the rolling 12-month average carbon intensity fell to 125 gCO₂/kWh - a 19% reduction compared to the prior year and the lowest of the past four years, underscoring progress in decarbonisation. Increasing renewable electricity generation remains crucial to achieving net-zero goals, enhancing energy security, and reducing reliance on imports.