UK sunshine is a plus for UK BESS revenues…16 May 2025 10:17
The UK is enjoying a prolonged period of high sunshine hours, with some record breaking stats for March, April and May so far. This is great news for solar-derived revenues, but also for BESS because BESS installations have enhanced revenue generation opportunities during periods of high irradiance.
I don’t like ChatGPT explanations posted here but it did produce a good summary, so with my apologies:
Battery Energy Storage Systems (BESS) can potentially earn more revenue during periods of high irradiance, but it depends on how they are integrated and utilized within the grid or solar system. Here’s how:
1. Energy Arbitrage: During periods of high irradiance, solar generation is typically high, leading to lower grid electricity prices. A BESS can charge during these low-cost periods and discharge during peak demand periods when electricity prices are higher, maximizing revenue.
2. Peak Shaving: High irradiance can lead to excess solar generation, potentially causing grid congestion or curtailment. BESS can store excess energy and discharge it during peak demand, thereby reducing demand charges and capturing peak pricing.
3. Ancillary Services: During periods of high irradiance, solar generation can cause grid instability. BESS can provide grid-balancing services like frequency regulation, voltage support, and ramp rate control, earning additional income.
4. Capacity Markets: In markets with capacity payments, BESS can be compensated for being available to supply power during periods of high demand, which may correlate with periods of high solar output.
We may see some very positive earnings figures for this period, perhaps especially if the sunshine continues…