Gresham House
Specialist asset management
The global opportunity for investors to capture the move to clean energy systems
The global opportunity for investors to capture the move to clean energy systems
The energy transition progresses at pace
Amid decarbonisation efforts, rising concerns over energy security, and declining clean energy technology costs, the energy transition continues to advance rapidly.
Its decentralising nature is creating investment opportunities across clean energy production, distribution, and end-use.
At Gresham House, we leverage our specialist sector expertise to find and create value in the mid-market segment of the energy transition investment universe.
Our experienced team is focused on investments in critical infrastructure including renewable energy, battery energy storage systems (BESS), and energy efficiency, with the goal of driving value for investors, as well as producers and consumers.
Gresham House has acquired SUSI Partners to become one of Europe’s top 10 energy transition asset managers by AUM1.
Find out about SUSIRead the press release
1. Indefi, June 2025 based on 10-year fundraising in European focused renewables funds by European GPs (exclusing industrial affiliated payers) as of year ending 2024.
Gresham House aims to capture the global energy transition opportunity
We provide access to energy transition globally, deploying capital into:
- Utility-scale battery energy storage, including two-hour and longer duration systems
- Solar and wind projects as well as innovative infrastructure solutions
The combination of SUSI’s mid-market energy transition investment capabilities and Gresham House’s leadership in battery energy storage, positions Gresham House as a leader in key growth segments of the global infrastructure investment market.
BESS are key enablers of our energy future
- They store excess solar and wind power for later use
- They deliver crucial grid services like frequency response, congestion relief, and peak shifting
- They reduce reliance on fossil fuel “peaking” plants and support electrification‑led decarbonisation
Why Battery Energy Storage matters to investors
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| Diversified income streams | Low correlation | Strong asset backing | Global scalability |
| Revenues from frequency markets, capacity services, arbitrage and long-term contracts provide stable, inflation-linked returns | with wholesale power prices and broader economic cycles — offering a defensive component to investment portfolios | BESS are tangible infrastructure assets with utility grade resilience and long lives | With worldwide storage demand expanding rapidly - supported by falling battery costs - there’s a multi billion-pound opportunity ahead |
What does it mean to us?
At Gresham House we focus on sustainable, transformative technologies that we believe offer the potential for strong financial returns, while supporting the energy transition.
Our energy transition offering includes battery storage, solar and wind, with broader international energy transition capabilities across flexible clean energy, energy efficiency and electrification
