InterGen
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.
- Company typePrivate
- Founded1996
- HeadquartersBurlington, United States
- Headcount501–1,000
- GTM typeB2B
- OfferingServices
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.
InterGen firmographics
Firmographics- 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
Where InterGen is headquartered
LocationHeadquarters
- HQ city
- Burlington
- HQ country
- United States
- HQ region
- North America
Markets served
InterGen business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Operations, Infrastructure, Supply Chain, Personnel, Technology or R&D
Revenue model
- 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
InterGen product offering
Product offeringCore 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
Companies that use InterGen
Customer profileNamed customers2 records
Segments1 record
Ideal customer profiles1 record
InterGen technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
InterGen partnerships and signals
Strategic signalPartnerships
Three partnerships are on record, tiered core and flagship.
- GE VernovacoreGE 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.
- TEDOMflagshipTEDOM, 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 InvestmentsflagshipSev.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
InterGen competitors and assessment
Company assessmentDirect 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
InterGen social profiles
Digital presenceInterGen financial estimates
Financial estimateRevenue estimate
Valuation estimate
InterGen leadership team
Management profileNumber of profiles
Profiles1 record
InterGen funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
InterGen M&A and investment
M&A and investmentM&A
Investments3 records
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about InterGen
What does InterGen do?
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.
Is InterGen a public or private company?
InterGen is a private company. It is classified as corporate owned and is currently operating.
When was InterGen founded?
InterGen was founded in 1996. It employs 501 to 1,000 people.
Where is InterGen based?
InterGen is headquartered in Burlington, United States, in the North America region.
How does InterGen make money?
One revenue line is on record: power Generation and Sales.
Who are InterGen's main competitors?
Direct peers on record are SSE plc, Drax Group and Uniper. Broad incumbents are RWE, EDF Energy, E.ON, Engie and Centrica. Vattenfall is listed as a regional player. Orsted is listed as an emerging player.
Does InterGen have an API?
No public API is recorded for InterGen.