Large scale battery storage project financing options in Guernsey 2025

What is a battery energy storage system?

Battery energy storage system. Battery energy storage systems (BESS) can help address the challenge of intermittent renewable energy. Large scale deployment of this technology is hampered by perceived financial risks and lack of secured financial models.

Do European and UK regulators support battery energy storage systems?

The success in recent capacity market auctions in Italy and the UK, as well as other European countries that are building large-scale battery energy storage systems (BESS) projects, signals that the European and UK regulatory environment is providing a degree of limited support to the technology.

What are the key challenges facing battery storage?

It also outlines the key challenges facing the sector, including underdeveloped frameworks and barriers to investment. The study concludes with five policy recommendations designed to accelerate battery storage deployment and ensure energy systems are prepared to integrate high levels of renewable energy.

How many MW of battery storage contracts were awarded in February?

The UK’s T-4 Capacity Market auction awarded 1,093MW of battery storage contracts in February. Around 60% of battery storage had a two-hour or longer duration, similar to the UK T-4 2024-25 results (storage duration is the amount of time storage can discharge at its power capacity before depleting its energy capacity).

What is battery energy storage system (BESS)?

Battery energy storage systems (BESS) are accepted as one of the key solutions to address these challenges. BESS can respond to real-time renewable energy fluctuation challenges through its fast response capability (congestion relief, frequency regulation, wholesale arbitrage, etc.).

Is battery storage a key development in the UK?

Since 2019, the key development in the UK and broader European battery storage sector has been the introduction of battery storage into capacity market auctions. The UK’s T-4 Capacity Market auction awarded 1,093MW of battery storage contracts in February.