Forsa Energy

What Forsa Energy does

Forsa Energy is a UK-based energy infrastructure company that develops, finances, constructs and operates flexible gas peaking plants and battery energy storage systems (BESS) across Great Britain. The company's flexible generation assets are dispatched to balance the electricity grid during periods of high demand or low renewable output, with each plant holding a Capacity Market contract awarded by National Grid ESO through competitive government auctions. As of 2024, Forsa operates 298MW of installed flexible generation capacity across 11 sites, with an additional approximately 50MW ready for construction, roughly 230MW in late-stage contracted development, and more than 260MW of BESS projects in the development pipeline.

Forsa's flexible generation fleet primarily uses Jenbacher and MWM gas engines capable of ramping to full capacity within five minutes, providing fast-response capacity to the National Grid. The company's newer projects, including the Drumcross site, incorporate H2-ready generators designed for future fuel transition. Battery Energy Storage Systems in the pipeline are positioned both as standalone projects and as co-located assets adjacent to existing flexible generation sites, designed to charge from the grid during periods of excess renewable production and discharge during high-demand periods to mitigate wind turbine curtailment.

The company follows a cradle-to-grave operational model, managing all phases from greenfield development through long-term operation. Revenue is generated through two primary streams: long-term Capacity Market contracts with National Grid ESO (providing recurring payments for capacity availability) and direct electricity sales to Distribution Network Operators (SPEN, ENWL) and National Grid when plants are dispatched during high-demand periods. Forsa is wholly owned by Tiger Infrastructure Partners, which acquired the business in 2020 to back the expansion of flexible generation and energy storage assets in Great Britain.

Name

Forsa Energy

Legal name

Forsa Energy Gas Holdings Limited

Website

https://forsaenergy.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

11–50 employees

Short description

Forsa Energy is a UK-based energy infrastructure company that develops, builds and operates flexible gas peaking plants and battery energy storage systems. It serves National Grid ESO and regional Distribution Network Operators, providing fast-response generation and grid balancing services.

Ownership category

akta.pro rank

Product category

Flexible Power Generation & Energy Storage

NAICS

Fossil Fuel Electric Power Generation (221112), Other Electric Power Generation (221118), Electric Power Generation (22111)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA)

akta.pro secondary industries

BESS Operations, Maintenance & Asset Performance Management (APM) (EUAFAAAG), BESS Market Participation & Trading Services (Ancillary/Capacity/Arbitrage) (EUAFAAAL)

Keywords

• Flexible power generation
• Battery energy storage
• Grid balancing services
• Peaking power plants
• Capacity market contracts

Headquarters

HQ city

Greenock

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Supply Chain, Personnel, Operations, Technology or R&D

Revenue model

1. Capacity Market Contracts: Long-term contracts awarded by National Grid ESO through competitive auctions, providing payments for capacity availability during emergency grid situations. Sites must be available to generate electricity on demand for national security of supply.
2. Electricity Sales to Grid: Direct electricity generation sales to Distribution Network Operators (SPEN, ENWL) and National Grid during periods of high demand. Revenue generated from wholesale electricity prices when plants are dispatched.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels3 records

Core offering

Forsa Energy develops, finances, constructs, and operates flexible (peaking) gas generation plants and Battery Energy Storage Systems (BESS) across the UK. Its 298MW flexible generation portfolio across 11 operational sites provides fast-response (sub-5-minute) capacity to balance intermittent renewables under long-term contracts with National Grid ESO and Distribution Network Operators (SPEN, ENWL). The company also maintains a 260MW+ BESS development pipeline to enable grid balancing and mitigate wind curtailment.

Product overview

Forsa Energy operates a platform of energy transition technologies comprising two core product lines: Flexible Generation and Energy Storage (BESS). The Flexible Generation platform consists of 12 gas peaking plants (totaling approximately 298MW) across the UK — including Carrington (40.5MW, Jan 2024), Caledon Green (22.5MW, May 2023), Abercorn, Erskine, Drumcross, Hartmoor (49.5MW), Carrington, Chadderton (20.6MW), Bancroft (20.6MW), Hillhouse (20MW), Harelaw (20MW), Leven (20.7MW), and Pimbo (20.6MW) — each delivering sub-5-minute rapid response capacity under Capacity Market contracts with National Grid ESO, built by EPC contractors Clarke Energy and Edina, and backed by investor Tiger Infrastructure Partners. The BESS product line is a separate development pipeline of battery energy storage projects exceeding 260MW in development, positioned to complement the flexible generation portfolio and address renewable intermittency. The company follows a cradle-to-grave operational model, developing, financing, constructing, and operating all projects in-house.

Differentiator

Problem solved

Functional benefit

Products and services

• Flexible Generation Flexible (peaking) gas generation plants that operate on a peaking basis, ramping to full capacity within minutes to assist National Grid with balancing energy supply and demand. Each project holds a Capacity Market Award from National Grid ESO, ensuring availability to generate electricity during emergency situations. The company has 11 operational flexible generation sites totaling approximately 298MW, with an additional ~50MW ready for construction and ~230MW in late-stage development.
• Energy Storage (BESS) Battery Energy Storage Systems (BESS) that charge from the grid during periods of low demand or excess renewable production and discharge during high demand or low renewable output, enabling grid balancing and reducing wind turbine curtailment. Forsa has a BESS development pipeline exceeding 260MW, with projects strategically located throughout the UK, some adjacent to flexible generation sites.
• Carrington Flexible Generation Plant 40.5MW flexible generation plant in Carrington, Manchester, featuring 9 x 4.5MW Jenbacher engines capable of ramping to full capacity in 5 minutes. Built by Clarke Energy as principal contractor, exporting up to 40.5MW into the ENWL network under a National Grid ESO Capacity Market contract.
• Caledon Green Flexible Generation Plant 22.5MW flexible generation plant in Grangemouth comprising 5 Jenbacher 4.5MW engines capable of ramping to full capacity in 5 minutes. Built by Clarke Energy as principal contractor, supplying electricity to SPEN and National Grid during periods of high network demand.
• Drumcross Flexible Generation Plant 20MW flexible generation plant in Livingston, Scotland, utilising fast-start, high-efficiency, H2-ready generators. Capable of exporting 20MW of electricity at short notice to the local distribution network during periods of high demand and low renewable output. Constructed by Clarke Energy.
• Abercorn Flexible Generation Plant Flexible generation plant in Abercorn, Scotland, co-developed with Clarke Energy and SPEN, contributing to security of electricity supply for the local area during the energy transition.
• Erskine Flexible Generation Plant 20.7MW flexible generation plant. Financing raised and construction commenced in 2022; construction completed in 2024 as part of the expansion that brought Forsa's operational portfolio to 298MW.
• Leven Flexible Generation Plant 20.7MW flexible generation plant using 9 MWM TCG 3020 V20 engines with housed construction. EPC contractor: Edina. Operational since December 2021.
• Pimbo Flexible Generation Plant 20.6MW flexible generation plant using 4 Jenbacher JGS624GS-NL and 1 Jenbacher JGS616GS-NL engines with housed construction. EPC contractor: Clarke Energy. Operational since October 2019.
• Chadderton Flexible Generation Plant 20.6MW flexible generation plant using 4 Jenbacher JGS624GS-NL and 1 Jenbacher JGS616GS-NL engines with housed construction. EPC contractor: Clarke Energy. Operational since October 2020.
• Bancroft Flexible Generation Plant 20.6MW flexible generation plant using 4 Jenbacher JGS624GS-NL and 1 Jenbacher JGS616GS-NL engines with housed construction. EPC contractor: Clarke Energy. Operational since February 2020.
• Hillhouse Flexible Generation Plant 20MW flexible generation plant using 4 Jenbacher JGS624GS-NL and 1 Jenbacher JGS616GS-NL engines with housed construction. EPC contractor: Clarke Energy. Construction completed in 2021.
• Hartmoor Flexible Generation Plant 49.5MW flexible generation plant using 11 Jenbacher JGS624GS-NL engines. EPC contractor: Clarke Energy. Operational since December 2021.
• Harelaw Flexible Generation Plant 20MW flexible generation plant using 10 MWM TCG 2020 V20 engines with containerised construction. EPC contractor: Edina. Operational since October 2021.

Quantifiable outcome

• 298MW of installed flexible generation capacity across 11 operational sites
• +3 more outcomes

Named customers3 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core.

• Clarke EnergycoreImplementation/ SI/ Consulting PartnerPrincipal EPC contractor for majority of Forsa's flexible generation sites including Bancroft, Chadderton, Hillhouse, Hartmoor, Caledon Green, Carrington, Pimbo and Drumcross. Specializes in Jenbacher gas engine installations.
• EdinacoreImplementation/ SI/ Consulting PartnerEPC contractor for Harelaw and Leven flexible generation sites, providing MWM TCG 3020 V20 gas engines with containerised and housed construction solutions.
• SPEN (SP Manweb)coreStrategic or Co-development PartnerDistribution network operator partner for Abercorn, Caledon Green and Drumcross sites. Forsa supplies electricity to SPEN network during periods of high demand, supporting National Grid balancing.
• National Grid ESOcoreStrategic or Co-development PartnerPrimary Capacity Market contract holder. All Forsa flexible generation sites hold Capacity Market awards, contributing to UK's primary mechanism for ensuring stable and secure electricity supply.
• ENWL (Electricity North West)coreStrategic or Co-development PartnerDistribution network operator for Carrington site. Carrington exports up to 40.5MW of electricity into the ENWL network.

Scale indicators10 records

Recent moves8 records

Expansion highlights5 records

Peers

• Centrica plc:

Direct peers

• Zenobe Energy: UK-headquartered BESS developer and operator focused on grid-scale battery storage. Directly comparable to Forsa's emerging BESS strategy and route-to-market approach in Great Britain.
• Harmony Energy: UK-based developer and operator of utility-scale BESS projects, directly comparable to Forsa's BESS development pipeline. Active in GB capacity and balancing markets with a similar grid-scale storage focus.
• Low Carbon: UK renewable energy and BESS developer that builds, owns, and operates energy transition assets. Directly comparable through its IPP/developer model targeting UK grid services and capacity revenues.
• Field Energy: UK-based utility-scale BESS developer with a multi-GW pipeline of storage projects. Comparable to Forsa as a fellow GB-focused BESS IPP participating in capacity and ancillary services markets.

Broad incumbents

• Uniper UK: Large European energy company with substantial UK generation including flexible gas assets. Comparable as a GB flexible generation operator, though as a broad multinational portfolio player.
• SSE plc: Large UK utility with a rapidly growing BESS portfolio and thermal generation assets. Overlaps with Forsa in GB capacity market participation and BESS development, though as a diversified incumbent.
• Drax Group: Major UK power generator with significant flexible and renewable capacity. Comparable as a GB-focused flexible generation operator participating in capacity markets, though materially larger and more diversified.

Emerging players

• Highview Power: UK-based long-duration energy storage developer using liquid air technology. Comparable as a fellow GB-focused storage developer targeting grid flexibility, though a distinct technology pathway.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Forsa Energy