What CeraPhi Energy does

CeraPhi Energy is a privately held UK geothermal energy development company founded in 2020 and headquartered in Great Yarmouth, Norfolk, with a small team of 11-50 employees. The company designs and deploys deep closed-loop geothermal heating systems for commercial, public sector, and community customers, anchored by its proprietary CeraPhiWell monobore technology — a concentric tubular downhole heat exchanger that circulates a working fluid to extract heat from deep boreholes (up to 1,500m and exceeding 45°C) while re-injecting 100% of fluid into the ground and avoiding any interaction with subsurface formations or aquifers. CeraPhi complements this with the CeraPhi500 shallow dual-loop system (40-50kW per unit, serving 5-10 homes), the CeraPhiTRU containerised testing unit, the proprietary CeraPhiPro project-evaluation software, and an in-house drilling division called CeraPhi Drilling Solutions. Following the 2023 acquisition of Third Energy, the company controls 8 well sites, 12 former gas wells, and 6-28km of pipeline infrastructure in North Yorkshire, and was the first globally to demonstrate commercial-scale conversion of a redundant gas well to geothermal at the KM8 site in Kirby Misperton.

CeraPhi generates revenue through a vertically integrated service stack: free Phase I viability assessments, paid Phase II detailed studies, FEED, funding arrangement, EPC delivery, ongoing O&M, and a Heat-as-a-Service (HaaS) model where CeraPhi funds, builds, owns, and operates geothermal assets and sells heat back to customers under long-term energy service agreements. Additional revenue mechanics include technology licensing and well-retrofit consulting for oil and gas operators seeking to convert decommissioning liabilities into geothermal assets. Customers span NHS hospital trusts (Scunthorpe General Hospital), local authorities and community interest companies (Pickering Town CIC, York and North Yorkshire Combined Authority), heritage estates (Kentwell Hall), leisure operators (Flamingo Land), and agricultural/industrial sites. Named projects include the 2025 Scunthorpe General Hospital installation (the deepest of its type in the UK), the Kirby Misperton Heat Network (connection planned December 2027), the Kentwell Hall net-zero study, and multiple feasibility studies across the UK, Eastern Europe, Australia, North Africa, the Caribbean, the EU, and the USA.

The go-to-market combines enterprise field sales to large public-sector and commercial anchor loads with a community-led engagement model for neighbourhood heat networks and a sales-led HaaS offering that removes customer CAPEX barriers. The company raised over £2.7m in private investment and £2m in grants by 2022, secured a 2024 partnership with IGNIS H2 Energy and the Geolog Group, and received the 2026 British Renewable Energy Awards 'Best in Class'. Certifications include ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, Living Wage Employer accreditation, the Armed Forces Covenant Silver Award, and UN Global Compact signatory status.

Name

CeraPhi Energy

Legal name

CeraPhi Ltd

Website

https://ceraphi.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

11–50 employees

Short description

CeraPhi Energy is a UK-based geothermal development company that designs, finances, and operates proprietary deep closed-loop monobore heating systems for NHS hospitals, local authorities, community heat networks, and commercial customers, with Heat-as-a-Service and EPC revenue models.

Ownership category

akta.pro rank

Product category

Geothermal Heat Solutions

NAICS

Steam and Air-Conditioning Supply (221330)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Geothermal Power Plant Development & IPP (Permitting, Financing, Project Development) (EUAMAEAD)

akta.pro secondary industries

Geothermal Power Plant EPC & Construction (Surface Facilities, Balance of Plant) (EUAMAEAE), Geothermal Drilling & Well Construction (Production/Injection, Directional, Well Services) (EUAMAEAB), Geothermal Power Generation Operations & Maintenance (Plant O&M, Performance Optimization) (EUAMAEAF), Geothermal Direct Use Heat Projects (District Heating, Greenhouses, Aquaculture, Industrial Heat) (EUAMAEAG), Geothermal BOP & Surface Facilities (Well Pads, Gathering Systems, Brine Handling) (EUAMAFAH)

Keywords

• Deep geothermal energy
• Closed-loop geothermal wells
• Heat as a service
• Geothermal drilling solutions
• Oil well retrofit services

Headquarters

HQ city

Great Yarmouth

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Heat as a Service (HaaS): CeraPhi builds and operates geothermal systems at its own cost and sells heat back to customers under long-term energy service agreements. Removes CAPEX barriers for customers while providing recurring revenue streams for CeraPhi. Applied at Kentwell Hall and Scunthorpe General Hospital projects.
2. Engineering, Procurement & Construction (EPC): Full-service EPC delivery for geothermal systems where CeraPhi provides all design and construction services under a single contract. CeraPhi can also support competitive tender processes for clients with procurement requirements.
3. Feasibility and Detailed Studies: Phased consulting services from initial viability assessment (free, returned within 4 weeks) through detailed studies (8-10 weeks, following kick-off meeting) and FEED studies. Each phase is a standalone service as well as part of an integrated delivery.
4. Operations & Maintenance (O&M): Ongoing asset operation and maintenance for geothermal solutions. In some cases ownership transfers to clients or energy providers with CeraPhi providing O&M programs. Where CeraPhi retains operatorship, assets are maintained under detailed BMS procedures by dedicated technicians.
5. Well Retrofit and Licensing: CeraPhiWell technology enables oil and gas operators to defer decommissioning costs and convert non-producing wells into revenue-generating geothermal assets. Licensing of proprietary technology and associated consulting services.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels10 records

Core offering

CeraPhi Energy develops and deploys deep closed-loop geothermal energy solutions using its proprietary CeraPhiWell monobore well system to extract baseload renewable heat for direct use in space heating, cooling and industrial processes. The company operates a vertically integrated platform spanning feasibility studies, in-house drilling, well installation, software-based project evaluation (CeraPhiPro), and ongoing operations, delivering projects under EPC contracts, Heat-as-a-Service long-term agreements, and technology licensing models.

Product overview

CeraPhi Energy operates as a technology development company offering a vertically integrated geothermal solutions platform. The core product is the proprietary CeraPhiWell closed-loop monobore geothermal well system, complemented by the CeraPhiTRU testing unit and CeraPhi500 shallow well solution. The company provides CeraPhiPRO evaluation software for project analysis, CeraPhi Drilling Solutions for in-house drilling capabilities, and Heat as a Service commercial models. Services follow a six-phase methodology from viability assessment through to operations and maintenance. The company specializes in repurposing existing oil and gas wells into geothermal energy producers, demonstrated through landmark projects like the KM8 Kirby Misperton initiative and Third Energy acquisition.

Differentiator

Problem solved

Functional benefit

Brands

• CeraPhiWell: A novel closed-loop monobore geothermal well system in which a specifically selected fluid is circulated down the well through a concentric tubular arrangement that acts as a downhole heat exchanger.
• CeraPhi500
• CeraPhiTRU
• CeraPhiPro
• CeraPhi Drilling Solutions

Products and services

• CeraPhiWell A novel closed-loop monobore geothermal well system in which a specifically selected working fluid is circulated down the well through a concentric tubular arrangement acting as a downhole heat exchanger. The fluid is fully contained within the concentric tubes and does not interact with any below-ground formations or aquifers. Designed for an anticipated operating life of at least 50 years with no moving parts below ground. Sold and deployed for new boreholes and for retrofit of existing oil and gas wells.
• CeraPhi500 A 500m vertical borehole solution containing a patented dual loop closed-loop pipe system that delivers 40-50kW of thermal energy per unit, sufficient to heat 5-10 domestic homes. Uses a purpose-designed geothermal fluid with minimal electrical power consumption and requires a 20m x 10m installation footprint reducing to a small energy centre post-installation. 25-year system guarantee.
• CeraPhiTRU (Thermal Response Unit) A transportable bespoke designed geothermal testing system housed in a standard 20ft ISO container, containing a variable speed circulation pump and pressure/temperature sensors. Enables accurate assessment of CeraPhiWell performance in installed boreholes and acts as a demonstrator/simulator integrating with domestic radiators, heat pumps, water heaters and chillers.
• CeraPhiPro An online software data management and information modelling platform that facilitates delivery of geothermal energy projects, providing clients with detailed business analysis from initial concepts and research through to customer-facing quotes.
• CeraPhi Drilling Solutions In-house drilling division providing new boreholes tailored to client needs, enabling CeraPhi to offer vertically integrated geothermal development services alongside its proprietary well technology.
• Heat as a Service (HaaS) Commercial offering in which CeraPhi funds, builds, owns and operates a geothermal system at its own cost and sells heat back to the customer under a long-term energy service agreement, removing technical and financial CAPEX barriers for the customer while providing CeraPhi with recurring subscription-style revenue.
• Geothermal Consultancy Services Expert consultancy covering all aspects of geothermal heat utilisation across feasibility studies, detailed studies (8-10 weeks) and FEED phases. Includes free Phase I Viability Assessment returned within four weeks and tailored detailed studies with energy needs assessment, geological and geophysical assessment, well design and hydraulic modelling, thermodynamic modelling, and project development and economics.
• Engineering, Procurement and Construction (EPC) Services Full EPC delivery of geothermal systems where CeraPhi provides all design and construction services under a single contract. CeraPhi can also support clients through competitive tender processes for projects with public sector procurement requirements.
• Operations and Maintenance (O&M) Services Ongoing asset operation and maintenance for geothermal solutions. In some cases ownership transfers to clients or energy providers with CeraPhi continuing to provide O&M programmes; where CeraPhi retains operatorship under HaaS, assets are maintained under detailed BMS procedures by dedicated technicians.
• Well Retrofit and Technology Licensing Licensing of the CeraPhiWell technology to oil and gas operators for repurposing their existing non-producing or decommissioned wells into geothermal assets, with associated consulting services. Enables operators to defer decommissioning costs and convert well liabilities into revenue-generating renewable energy assets.

Quantifiable outcome

• Over £130,000 annual energy savings and 374+ tonnes CO2 reduction per year for Pickering community heat network decarbonising schools and leisure centre
• +5 more outcomes

Named customers6 records

Segments7 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eight partnerships are on record, tiered core, flagship and regional.

• Northern Lincolnshire and Goole NHS Foundation TrustcoreStrategic or Co-development Partner · 1 January 2025Contract awarded by the NHS Trust to implement geothermal decarbonisation at Scunthorpe General Hospital. Trust provided the existing 550m borehole asset and is committed to Net Zero targets. Project to be complete and commissioned by end of February 2026.
• Kentwell HallflagshipStrategic or Co-development Partner · 1 January 2025CeraPhi appointed to deliver a feasibility study for Kentwell Hall, a 16th-century Grade 1 listed stately home. CeraPhi will design a non-invasive multi-well deep geothermal heating solution. Heat-as-a-Service model being considered where CeraPhi builds and operates the system selling heat back to the estate.
• Pickering Town Community Interest Company (PTCIC)regionalStrategic or Co-development Partner · 1 February 2024PTCIC received a £36,000 UK Shared Prosperity Fund grant and collaborated with Third Energy and CeraPhi Energy to conduct feasibility studies for geothermal heat networks in Pickering. PTCIC represents the community interest in developing sustainable energy infrastructure.
• Third EnergycoreStrategic or Co-development Partner · 1 January 2023Third Energy's North Yorkshire assets (8 well sites, 12 gas wells, 6-28km pipelines) became a majority-owned subsidiary of CeraPhi Ltd in 2023. This acquisition provided CeraPhi with existing well infrastructure that could be repurposed for geothermal energy. Third Energy had 25 years of gas production experience and managed operations, drilling, and well works safely and without adverse environmental impact.
• Net Zero Technology CentrecoreStrategic or Co-development Partner · 1 January 2023Partnered with Net Zero Technology Centre for the KM8 Project demonstration site. The centre provided expertise in energy technology and innovation to support validation of the CeraPhiWell prototype deployment in an existing non-producing hydrocarbon well.
• WeatherfordcoreTechnology or Integration · 1 January 2023Partnered with Weatherford for the KM8 Project to deploy equipment into the existing Kirby Misperton KM-8 well and run various simulations to validate CeraPhiWell technology.
• Genius Energy LabcoreStrategic or Co-development Partner · 1 January 2023Partnered with Genius Energy Lab for the KM8 Project, providing geothermal modelling expertise to support validation of the prototype design and output against predicted modelled results.
• CeraPhi Drilling SolutionscoreOthers · 1 January 2023Established as an in-house drilling division enabling CeraPhi to provide new boreholes tailored to client needs. Extends CeraPhi's vertically integrated service offering from feasibility through to drilling and installation.

Scale indicators9 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Eavor Technologies: Eavor develops closed-loop deep geothermal systems (Eavor-Loop) for baseload heat and power globally. It is the most direct technology competitor to CeraPhi's CeraPhiWell closed-loop monobore approach, targeting similar heat-network and industrial customers.
• Geothermal Engineering Ltd: UK-based developer of deep geothermal projects targeting the same heat decarbonisation use cases (e.g., United Downs), also pursuing direct-use and small-scale power. Directly comparable geography, customer segments, and project-development motion to CeraPhi.
• Eden Geothermal: UK developer advancing deep geothermal in Cornwall for heat networks and horticulture. Comparable early-stage UK project-development profile, target customer base (community heat, agriculture), and pre-revenue stage.

Emerging players

• Fervo Energy: US-based developer of next-generation enhanced geothermal systems for electricity generation, including a focus on horizontal drilling. Comparable closed-loop design philosophy and project-development motion though targeting power rather than direct-use heat.
• Kensa Heat Pumps: UK manufacturer and installer of ground-source heat pumps that compete with deep geothermal for the same decarbonising-heating customer (housing developers, social housing, off-gas homes). Substitutes for CeraPhi's CeraPhi500 shallow-well solution.
• Star Energy Group: UK geothermal developer pursuing deep geothermal projects in the Weald basin and elsewhere. Comparable UK-only focus and direct-use project development orientation, though still earlier-stage.

Broad incumbents

• Baker Hughes: Global oilfield services major with drilling and subsurface capability relevant to geothermal well construction. CeraPhi's drilling division and well-repurposing motion overlap with parts of Baker Hughes' portfolio, and the firm is named on CeraPhi's advisory board.
• Schlumberger / SLB: Global oilfield services and drilling major with growing geothermal investment and capability (e.g., geothermal well construction). Comparable in subsurface and drilling services for geothermal, with CeraPhi advisor Musa Taramov from Schlumberger.

Others

• Weatherford International: Oilfield services and well-completion technology company partnering with CeraPhi on the KM8 demonstration. Comparable in the equipment and deployment-supply side of closed-loop geothermal wells, not a competing developer.

Regional players

• Cornish Lithium: UK deep-geothermal and lithium-from-brine developer pursuing similar Cornish subsurface resources; comparable UK-based deep-geothermal project-development orientation and capital-raising stage.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

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Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors2 records

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

M&A1 record

Investments

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

Frequently asked questions about CeraPhi Energy