What Rendesco does

Rendesco is a UK-based clean heat developer and operator founded in 2012 by Alastair Murray, headquartered in London with operational offices in Cheltenham and Maidenhead. The company designs, finances, builds, owns, and operates low-carbon heat networks — including ground source heat networks (GSHN), ambient heat networks (AHN), and water-source heat networks — serving housing developers, retirement living operators, social housing providers, universities, and individual homeowners across the UK. As of the most recent reporting, Rendesco operates more than 70 heat networks supplying over 8,000 homes and generating 14GWh+ of sustainable heating annually, with a total of 10,000+ UK homes installed and 35,000 tonnes of CO2 saved cumulatively.

The company operates a dual business model. For enterprise customers, Rendesco funds and owns heat infrastructure as a utility through its Last Mile Heat joint venture with Last Mile Infrastructure, with per-plot pricing of £3,500-£4,500 for housing developers and a stated £150m+ gross pipeline and up to £500m capital expenditure opportunity. Its flagship project is the UK's largest water-source heat network at Welborne Garden Village (6,000 homes). For individual homeowners, Rendesco Flow combines a cylinder-free one-day heat pump installation with battery storage and a smart optimization platform, supported by subscription-based RendescoCare monitoring tiers (£9.95/month and £24.95/month). Technology differentiators include vertical integration across design, drilling, installation, and 24/7 O&M (reinforced by the 2024 acquisition of ADP Group's geothermal drilling operations), the ECMS energy centre management software, and certifications including TrustMark, Heat Trust, MCS, CIBSE CP1, and RECC.

Rendesco is privately held, with Pioneer Point Partners acquiring a majority stake via an up to £100m investment in May 2025, following a £6m 2024 round led by Clean Growth Fund, Eurazeo, and Aviva Ventures. The company is positioning for growth as Ofgem regulation of UK heat networks takes effect in January 2026 and as the Future Homes Standard mandates low-carbon heating in new builds from 2025/2026.

Name

Rendesco

Legal name

Rendesco Limited

Website

https://rendesco.com

Company type

Private

Founded year

2012

Operating status

Operating

Headcount range

11–50 employees

Short description

Rendesco is a UK clean heat developer and operator founded in 2012 that designs, funds, builds, owns, and operates ground source, ambient, and water-source heat networks for housing developers, social housing providers, and homeowners, serving 10,000+ UK homes across 70+ networks.

Ownership category

akta.pro rank

Product category

District Heating / Low-Carbon Heat Networks

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Steam and Air-Conditioning Supply (22133)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Heat Pump & Smart HVAC Controller Integration (HSAOANAD)

akta.pro secondary industry

Residential Behind-the-Meter Generation (EUACALAB)

Keywords

• Ground source heat pumps
• Geothermal heat networks
• Low-carbon heating solutions
• Heat pump installation
• District heating systems

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Funded Heat Network Ownership & Operation: Rendesco finances, builds, owns and operates heat networks (treated as a utility). Revenue generated from heat supply charges to residents and property developers. Networks include ground source, ambient, and water-source heat networks. This is Rendesco's primary model for new build developments, operated through the Last Mile Heat joint venture.
2. Homeowner Heat Pump & Battery Sales (Rendesco Flow): One-time sale and installation of heat pump and battery storage systems to homeowners. Includes ongoing RendescoCare monitoring subscriptions (£9.95/month or £24.95/month). Revenue from system installation plus recurring monitoring and maintenance fees.
3. Operations & Maintenance Services: Ongoing O&M contracts for heat networks serving housing developments, social housing providers, and commercial customers. Includes 24/7 remote monitoring, field engineering, customer care, and annual servicing. Aligned to CIBSE CP1 lifecycle approach.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels9 records

Core offering

Rendesco designs, finances, builds, owns and operates low-carbon heat networks (ground source, ambient/shared ground loop, and water-source) for new-build housing developments as a utility-style offering delivered through its Last Mile Heat joint venture. For individual homeowners, Rendesco sells and installs Rendesco Flow, a cylinder-free heat pump and battery storage system with intelligent off-peak optimisation, completed in a single day and supported by 24/7 RendescoCare monitoring. The company also provides ongoing operations, maintenance and remote monitoring services for both its networks and homeowner systems.

Product overview

Rendesco is a UK-based clean heat developer and operator offering a portfolio of heat network solutions and smart home energy products. The core offering consists of Ground Source Heat Networks (GSHN), Ambient Heat Networks (AHN), and Water-Source Heat Networks delivered to housing developers and homeowners. For end consumers, Rendesco Flow is the primary product—a cylinder-free heat pump system with battery storage and smart controller managed by the Flow optimization platform. The portfolio is supported by RendescoCare/Care+ maintenance plans (add-on services), and ECMS software for enterprise network management. The company operates through joint venture Last Mile Heat for funded network ownership.

Differentiator

Problem solved

Functional benefit

Brands

• Rendesco Flow: Heat pump system with no bulky cylinder and smart controller that shifts energy to cheaper times, offering up to 50% lower energy costs. Installed in a single day with 24/7 support through RendescoCare.
• RendescoCare
• Last Mile Heat

Products and services

• Rendesco Flow Complete home energy solution for individual homeowners combining a cylinder-free heat pump, battery storage, and an intelligent Flow controller that automatically shifts energy usage to cheaper off-peak times. Delivers heating, hot water, and up to 50% lower energy costs, installed in a single day without bulky tanks or disruptive re-plumbing.
• Ground Source Heat Network (GSHN) Centralized 4th-generation heat network with an on-site energy centre producing heating and hot water for entire developments, with individual Heat Interface Units (HIUs) in each property. Funded, built, owned, and operated as utility infrastructure by Rendesco / Last Mile Heat.
• Ambient Heat Network (Shared Ground Loop) 5th-generation decentralised heat network circulating ambient-temperature fluid through a development-wide pipeline that supplies the primary heat source for individual heat pumps in each property, enabling building-to-building heat transfer and cooling.
• Water-Source Heat Network Heat network utilising water from a natural underground reservoir (aquifer) as the heat source/sink, providing heating, hot water, and cooling. Includes an innovative energy exchange function for building-to-building heat transfer. First-of-its-kind deployment in the UK at scale (Welborne).
• Energy Centre Management System (ECMS) Centralised heat-network management software that integrates data from existing data loggers, meters, and additional sensors for remote monitoring, enhanced sensor capabilities, and detailed data analysis. Enables rapid fault identification, operational optimisation, performance reporting, and informs future heat-network designs.
• RendescoCare monitoring & maintenance plans 24/7 remote monitoring and optimisation service for Rendesco Flow and heat-network systems, offered as two tiers: Care (£9.95/month) with monitoring plus pay-as-you-go servicing; Care+ (£24.95/month) with full parts-and-labour maintenance, annual service, and a 10-year extended equipment warranty.
• Heat Network Operations & Maintenance (O&M) Services

Quantifiable outcome

• Up to 50% lower energy costs for homeowners using Rendesco Flow (vs standard heat pump solutions)
• +9 more outcomes

Named customers17 records

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration2 records

AI capability3 records

Feature4 records

Partnerships

Seven partnerships are on record, tiered core, minor and flagship.

• ADP Group (Geothermal Drilling Operations)coreStrategic or Co-development Partner · 21 August 2024Rendesco acquired ADP Group's geothermal drilling operation, bringing Tom Page and the drilling team into Rendesco as Head of Drilling. This acquisition vertically integrates Rendesco's delivery capability — bringing borehole drilling in-house alongside design, project management, and engineering. Tom Page now leads Rendesco's Design & Build division.
• Portsmouth WatercoreStrategic or Co-development Partner · 1 January 2024Portsmouth Water partnered with Rendesco and Buckland Development for the Welborne Garden Village project. The water-source heat network draws stable-temperature water from Portsmouth Water's underground Hoads Hill Reservoir. Portsmouth Water is one of the oldest water companies in the UK (incorporated 1857), serving 324,000 homes and businesses. This is a first-of-its-kind initiative in the UK.
• Buckland Development (Welborne Garden Village)coreStrategic or Co-development Partner · 1 January 2024Buckland Development is the master developer of Welborne Garden Village, commissioning Rendesco to design and build the UK's largest water-source heat network for the entire 6,000-home development. Buckland takes a long-term holistic approach to development, investing in innovative technology and deploying it at scale.
• University of Birmingham Climate Innovation Platform (CIP)minorStrategic or Co-development Partner · 1 January 2024Rendesco received funding from the University of Birmingham Climate Innovation Platform (CIP), supported by HSBC UK and part-funded by the European Regional Development Fund. The funding supports development of the Energy Centre Management System (ECMS) software. CIP delivers development opportunities for businesses committed to energy technology innovation.
• Heat TrustcoreOthers · 1 January 2024Heat Trust is a consumer protection scheme for heat network customers. Rendesco's ground source heat network at Pegasus Lymington Gate received Heat Trust accreditation, providing householders with equivalent protections to gas and electricity customers. Heat Trust sets minimum standards for fair treatment, vulnerable customer support, transparent billing, and access to the Energy Ombudsman.
• OfgemcoreOthers · 1 January 2024Ofgem has been appointed as the forthcoming regulator for heat networks in the UK. Ofgem regulation begins 27 January 2026, with registration and further duties phasing to January 2027. Rendesco's network designs and commercial/operational models are aligned to meet upcoming Ofgem requirements.
• Last Mile Infrastructure / Last Mile HeatflagshipStrategic or Co-development Partner · 1 January 2023Last Mile Heat is a joint venture between Last Mile Infrastructure and Rendesco. Last Mile Heat owns and manages the low-carbon heat infrastructure, which Rendesco designs and builds. This JV enables Rendesco's funded heat network model — the core commercial proposition for housing developers. Last Mile is one of the UK's largest independent network owners with ~670,000 installed connections. The JV pipeline exceeds £150m.

Scale indicators13 records

Recent moves7 records

Expansion highlights7 records

Direct peers

• Vital Energi: Vital Energi is one of the UK's largest district heating and energy solutions contractors, designing, building, owning, and operating heat networks (including CHP and heat pump networks) for residential and commercial developments. It is the most direct competitor to Rendesco's funded heat network proposition for UK housebuilders and developers.
• Hemiko: Hemiko develops, funds, and operates low-carbon heat networks in the UK, including heat pump-based networks for new housing developments. As an emerging player with a similar funded utility-style business model targeting residential developers, it is directly comparable to Rendesco's Last Mile Heat JV proposition.
• Kensa Heat Pumps: Kensa is a UK manufacturer and installer of ground source heat pumps and shared ground loop networks for residential and social housing customers. It is directly comparable to Rendesco's GSHP and ambient heat network offering, particularly in the social housing retrofit segment.

Broad incumbents

• ENGIE UK: ENGIE is a major global energy services company with significant UK district heating and heat network operations serving residential, commercial, and public sector customers. As a broad incumbent with overlapping heat network capabilities and much larger scale, it competes with Rendesco on large new build developments and public sector decarbonisation contracts.
• SSE Heat Networks: SSE is one of the UK's largest energy companies and operates a heat networks business serving residential and commercial customers. As a regulated utility with deep capital resources, it competes for large-scale heat network projects and is a likely counterparty or acquirer in the UK heat network sector.
• Veolia UK Energy & Urban Services: Veolia operates district heating networks and provides energy and decarbonisation services to UK local authorities, housing associations, and developers. Its heat network portfolio and municipal focus overlap with Rendesco's social housing and local authority segments.
• Equans UK & Ireland: Equans is a major UK building services and energy solutions contractor offering heat network design, build, operation, and maintenance. As a broad incumbent with end-to-end building services capabilities, it competes with Rendesco on heat network construction and O&M contracts for developers and social housing providers.
• Daikin UK: Daikin is one of the world's largest heat pump manufacturers and operates in the UK through installer networks and direct sales. As a broad incumbent equipment supplier, it is a partial competitor to Rendesco Flow in the homeowner market and an equipment partner/customer depending on Rendesco's supply choices.
• EDF Heat Networks: EDF operates UK heat networks serving residential and commercial customers and is increasingly active in low-carbon heating solutions. As a broad incumbent utility with regulated capital base, it competes for large heat network opportunities and benefits from the same Ofgem regulatory tailwinds as Rendesco.

Emerging players

• Octopus Energy (Heat Pumps / Cosy): Octopus Energy has launched heat pump installation services (Cosy) targeting UK homeowners, with smart tariff integration. As an emerging player with strong consumer brand and smart energy optimisation, it competes with Rendesco Flow in the residential heat pump market with a different GTM model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks2 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/rendesco

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds1 record

Investors3 records

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 Rendesco