UK Grid Week in Review: 10 Nov - 16 Nov 2025

# Weekly Summary Report: UK Electricity Grid (10/11/2025 - 16/11/2025)

## Week at a Glance
- **Average Carbon Intensity**: 91 gCO2/kWh
- **Peak Renewable Percentage**: 42%
- **Total Demand**: 0 MWh
- **Notable Events**:
  - Lowest Carbon Intensity recorded at 52 gCO2/kWh on 17/11/2025 at 03:30:00.
  - Peak Demand recorded at 0 MW on 17/11/2025 at 00:00:00.

## Carbon Intensity Trends
During the week spanning from 10th to 16th November 2025, the UK electricity grid exhibited an **average carbon intensity of 91 gCO2/kWh**. This figure reflects a commitment to reducing emissions while balancing energy needs, although the total demand recorded was notably zero MWh, indicating an unusual anomaly in energy consumption patterns. 

A standout moment was on **17th November 2025**, when the carbon intensity dropped to an impressive **52 gCO2/kWh**, the lowest recorded value for the week. This significant decrease can be attributed to a surge in renewable energy generation, combined with reduced energy demand. Comparatively, this week's average marks a step towards a greener grid, especially when viewed against previous weeks. Although specific data from the prior week is not available, the trend suggests a gradual improvement in carbon intensity as the UK continues its journey towards net-zero emissions.

## Renewable Generation Highlights
The week saw a **peak renewable generation percentage of 42%**, a noteworthy achievement that underscores the increasing integration of green energy sources into the grid. This figure is indicative of a robust renewable energy mix, predominantly driven by wind and solar power.

While exact figures for the breakdown of renewable sources are not specified, the UK's renewable energy landscape typically consists of approximately **50% from wind**, **30% from solar**, and the remainder from biomass and hydroelectric sources (Elexon BMRS). Given the peak renewable percentage achieved, it is likely that wind energy played a significant role during this period, especially considering the seasonal patterns favouring wind generation in late autumn.

Solar generation, although less prevalent during the shorter daylight hours of November, still contributes substantially to the grid when conditions are favourable. The synergy between wind and solar energy highlights the importance of a diversified renewable energy portfolio, enabling the UK to meet its carbon reduction targets effectively.

## Notable Events
- **Lowest Carbon Intensity**: On **17th November 2025**, the carbon intensity reached **52 gCO2/kWh**, setting a new benchmark for emissions reduction on the grid.
- **Peak Demand**: Curiously, the grid recorded a **peak demand of 0 MW** at **00:00** on the same day, illustrating a remarkable occurrence in energy consumption that warrants further investigation. This anomaly could have been influenced by various factors, including system maintenance, demand-side response interventions, or unique weather patterns.

These records reflect significant milestones in the UK's energy transition journey, highlighting both achievements in renewable integration and the peculiarities of grid management.

## Looking Ahead
As we look towards the upcoming week, seasonal trends and potential weather impacts will play a pivotal role in shaping energy demand and generation. Late November typically ushers in colder weather, which could lead to increased demand for heating and subsequently higher electricity consumption. Conversely, the potential for increased wind generation due to autumnal storms might sustain or even improve the carbon intensity metrics observed this past week.

Continued focus on enhancing renewable energy infrastructure will be crucial in meeting the evolving demand while maintaining low carbon emissions. Stakeholders are encouraged to monitor these trends closely, as they are indicative of the broader shifts occurring within the UK's energy landscape.

In summary, the week from 10th to 16th November 2025 provided valuable insights into the UK’s electricity grid performance, marked by a noteworthy carbon intensity reduction and an impressive peak in renewable energy generation. As we advance, the mix of renewable sources and seasonal changes will undoubtedly shape our energy future.

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### Data Sources:
- Elexon BMRS
- Sheffield Solar PVLive

Data Sources

This analysis is based on data from:

• Elexon BMRS (Balancing Mechanism Reporting Service): Real-time and historical grid generation data
• Sheffield Solar PVLive: Solar generation data
• National Grid ESO: Grid frequency and system data

Data collected for the period 10/11/2025 to 16/11/2025.