InterGen

What InterGen does

InterGen is a UK-based developer, owner, and operator of flexible power generation facilities, tracing its origins to a 1995–1996 Shell-Bechtel joint venture that grew into a multi-billion-dollar asset portfolio. The company operates four gas-fired power plants — Coryton, Rocksavage, Spalding, and the Spalding Energy Expansion — delivering more than 2,800 MW of combined generating capacity and supplying electricity to approximately 1.07 million UK homes annually. Its core technology centers on combined-cycle and open-cycle gas turbine configurations, with modernized GT26 turbines at the 800 MW Coryton plant capable of operating on hydrogen and natural gas blends to support the UK energy transition.

The company's revenue model is wholesale power generation: InterGen sells electricity into the GB energy market via the national grid and through balancing mechanisms, earning revenue per MWh dispatched plus capacity market payments. Its primary customer segment is the UK national grid and energy market infrastructure, with end consumption by UK homes and businesses representing the downstream beneficiaries of its dispatchable output. Under the leadership of President & CEO Jim Lightfoot, InterGen has undergone material ownership transitions, most recently with Sev.en Global Investments acquiring the gas business in February 2024 following a new ownership announcement in January 2023.

InterGen's strategic positioning centers on flexible, dispatchable generation that complements the growth of renewables by providing grid balancing and reliability services. The 2.46% efficiency upgrade and 85 MW additional capacity delivered at Coryton through GE Vernova's GT26 modernization underscore an asset-improvement trajectory rather than greenfield expansion, while the Spalding Energy Expansion project and hydrogen-blending capability signal measured preparation for a lower-carbon operating environment. With 501–1,000 employees and nearly three decades of operating history, InterGen functions as a mature infrastructure operator rather than a high-growth venture.

Name

InterGen

Legal name

InterGen

Website

https://intergen.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

501–1,000 employees

Short description

InterGen is a UK-based independent power generator operating four gas-fired plants totaling over 2,800 MW, supplying dispatchable electricity to the GB grid and powering approximately 1.07 million homes annually through combined-cycle and open-cycle turbine technology.

Ownership category

akta.pro rank

Headquarters

HQ city

Burlington

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Power Generation and Sales: InterGen generates electricity through its portfolio of gas-fired power plants and sells power to the GB energy market. Revenue is derived from power generation and supply to the national grid.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

InterGen is a developer, owner, and operator of flexible gas-fired power generation facilities in the UK, operating four power plants (Coryton, Rocksavage, Spalding, and Spalding Energy Expansion) with a combined generating capacity exceeding 2,800 MW. The company generates electricity using combined cycle and open cycle gas turbine technologies, including hydrogen-blending-capable GT26 turbines, and supplies power to the GB energy market and the UK national grid. Its dispatchable assets balance the system and support renewable energy integration while powering approximately 1.07 million UK homes annually.

Product overview

InterGen is a developer, owner, and operator of flexible power generation facilities in the UK, operating as a single unified platform with four power plants (Coryton, Rocksavage, Spalding, and Spalding Energy Expansion) totaling over 2,800 MW of generating capacity. The portfolio includes combined-cycle gas and open-cycle gas technologies designed to provide dispatchable, flexible power that supports grid reliability as renewable energy resources expand. The company's assets can operate on hydrogen and natural gas blends, positioning them for the energy transition. InterGen's power plants collectively power over 1 million homes annually, delivering stable, dependable energy supply across the UK.

Differentiator

Problem solved

Functional benefit

Products and services

• Coryton Power Plant An 800-MW combined-cycle gas-fired power plant located 30 miles east of London on the River Thames, featuring two GT26 gas turbines with hydrogen and natural gas blend capability, supplying dispatchable electricity to the UK national grid.
• Rocksavage Power Plant A flexible power generation facility in InterGen's UK asset portfolio, contributing to the company's 2,800+ MW generating capacity.
• Spalding Power Plant A flexible power generation facility in InterGen's UK asset portfolio, contributing to the company's 2,800+ MW generating capacity.
• Spalding Energy Expansion A development project expanding InterGen's power generation capacity in the UK, part of the company's growth initiatives.

Quantifiable outcome

• 85 MW of additional generation capacity delivered through turbine upgrades, exceeding expected 77 MW
• +2 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Three partnerships are on record, tiered core and flagship.

• GE VernovacoreTechnology or Integration · 9 February 2026GE Vernova completed turbine modernization at InterGen's 800-MW Coryton Power Plant, delivering two high-efficiency upgrades on GT26 gas turbines. The project exceeded expectations by delivering 85 MW of additional generation capacity (vs anticipated 77 MW), achieving 2.46% efficiency gain and enabling hydrogen blending capability.
• TEDOMflagshipStrategic or Co-development Partner · 11 October 2024TEDOM, a multinational energy group, acquired Italian cogeneration leader Intergen, enhancing TEDOM's position in Europe's energy sector. CDI Global Italy acted as financial advisor for the transaction.
• Sev.en Global InvestmentsflagshipStrategic or Co-development Partner · 5 February 2024Sev.en Global Investments acquired InterGen's gas business, representing a significant ownership change for the company's power generation assets in the UK.

Scale indicators7 records

Recent moves6 records

Expansion highlights3 records

Direct peers

• SSE plc: SSE is a UK-listed utility that owns and operates flexible gas, hydro, and renewable generation assets supplying the GB market. It is directly comparable to InterGen as a UK power generator balancing dispatchable and renewable capacity.
• Drax Group: Drax is a major UK power generator with multi-gigawatt capacity historically focused on coal and now biomass. It is a direct UK peer to InterGen in dispatchable large-scale generation serving the GB grid.
• Uniper: Uniper operates large gas-fired and coal power stations in the UK (e.g., Ratcliffe-on-Soar) and across Europe. It is a direct competitor to InterGen in dispatchable thermal generation and grid balancing services.

Broad incumbents

• RWE: RWE is a major European utility with significant UK generation assets, including gas, biomass, and offshore wind. It is a broad incumbent with overlapping exposure to UK dispatchable power and renewable integration dynamics.
• EDF Energy: EDF Energy is the UK arm of EDF, operating the country's nuclear fleet alongside other generation. It is a broad incumbent supplying the same GB grid and competing for capacity market and balancing revenues with InterGen's flexible gas portfolio.
• E.ON: E.ON is a large European utility with UK distribution and generation activities. It competes with InterGen in the broader UK energy market and across European power and gas trading.
• Engie: Engie is a global utility with European generation and energy services, including flexible gas assets. It is a broad incumbent with overlapping exposure to UK and European power markets relevant to InterGen's gas-fired fleet.
• Centrica: Centrica owns British Gas and has power generation interests, including a stake in nuclear and gas assets. It is a broad incumbent in the UK energy market with comparable exposure to wholesale power prices and the GB capacity market.

Regional players

• Vattenfall: Vattenfall is a Swedish state-owned utility with significant UK and Northern European generation. It is a regional peer with comparable thermal and renewable generation assets serving similar Northwest European power markets.

Emerging players

• Orsted: Orsted is a global leader in offshore wind and renewable energy with a growing UK presence. While not a thermal peer, it is an emerging player in the same energy transition that drives demand for InterGen's dispatchable backup capacity.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/intergenenergy
• LinkedInlinkedin.com/company/intergenenergy

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

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

M&A

Investments3 records

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

Frequently asked questions about InterGen