Best Services for Energy Efficiency Companies in United Kingdom
The 131 best Services for Energy Efficiency companies in United Kingdom in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Enzen.
Ranked by disclosed equity funding and recent momentum, this directory maps the best Services for Energy Efficiency companies in the United Kingdom across 131 tracked firms and $432M in total disclosed capital. Enzen leads the field by a wide margin at $252M raised, with Inspired Energy not far behind at $104M. Those two alone account for the bulk of the pool. The global market behind this sector stood at roughly $54.4B in 2020 and is forecast to reach $112.7B by 2030, a 10.3% CAGR that tells you this isn't speculative territory anymore. Demand is being pulled forward by the energy-as-a-service model, which lowers the cost of entry for companies pursuing sustainability targets and feeds growing appetite for managed electricity solutions.
So what's actually moving the needle right now? Solar PV, EV battery technology, and EV energy management systems are the themes showing up most in coverage, and median app install growth across energy sector tools is running at roughly 28% year-on-year. I'd flag that cybersecurity vulnerabilities are an underpriced structural risk as these platforms scale. BGF, Barclays, and Europa sit among the most active investors in this cohort, alongside government-backed capital through the Development Bank of Wales, which signals that patient, institutional money has already found its way into the space.
- ResearchAndMarkets.com
Ranked: Best Services for Energy Efficiency companies in United Kingdom
| # | Company | Last round | Disclosed funding | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ajrmgt Provider of utility management services for new build and void properties | — | — | — | 2006 | — | — | — | — |
| 2 | Alan Ward Consulting Business Management Consultancy in Berkshire, UK | — | — | — | — | — | — | — | — |
| 3 | Alfa Energy Group Provider of energy cost management & consulting, electricity procurement, and water auditing services | — | — | 214 | 1995 | — | — | — | — |
| 4 | Alliance Electrical Services Provider of HVAC products repairing services | — | — | 50 | 1995 | Jim Black Founder | — | — | — |
| 5 | Amber Provider of energy management and net-zero consultancy services | — | — | 107 | 2009 | — | WordPressMySQLPHP+28 | — | — |
| 6 | Asset-Plus Provider of energy reduction and zero carbon generation infrastructure upgrades | — | — | 40 | 2016 | — | — | — | — |
| 7 | BEMS Provider of building maintenance management services | — | — | 13 | 1996 | — | — | — | — |
| 8 | Black Isle Renewables Company that specializes in the design, installation, and maintenance of renewable heating systems, primarily… | — | — | — | 2010 | Iain Thomas Owner & Managing Director | — | — | — |
Top 12 Services for Energy Efficiency companies in United Kingdom
#1
Series B · Glasgow, Scotland · founded 2018 · 161 employees$18.9Mraised▾
It is an international offshore survey contractor that offers a wide range of offshore survey services. They focus on decarbonizing the energy industry through the use of uncrewed and remote survey solutions. Headquartered in Aberdeen, they have regional hubs to support clients globally.
- Nov 2024Series B$18.9M
#2
Series C · Solihull, England · founded 2006 · 2 employees$252.4Mraised▾
Provider of consulting, technology, engineering, and operating services for businesses. It offers a wide range of advisory solutions for the power, water, gas, and renewable energy sectors. It serves their services to industries including businesses, governments, non-governmental organizations, and nonprofits. It is also involved in projects related to digital transformation, smart metering, and cybersecurity in the utilities sector.
- May 2024Series C$10M
- Apr 2019Series C$100M
- May 2018Series B$116.1M
- Apr 2015Conventional Debt$20.5M
#3
Late Stage · Blackburn, England · founded 2000 · 535 employees$12.3Mraised▾
Provider of sustainable energy solutions for diverse sectors. This company designs, builds, and maintains energy generation, distribution, and consumption management systems. Services include heat networks, solar farms, energy storage, and waste heat recovery. They work with various clients, offering project development, financing support, and ongoing operations and maintenance. Their solutions aim to improve energy efficiency and reduce carbon emissions. The company also provides smart metering and energy conservation measures.
- Mar 2024PE—
- Feb 2018Grant (prize money)$81.8K
- Oct 2007PE$12.3M
#4
Series A · Cardiff, Wales · founded 2023$934.1Kraised▾
Optimise AI provides decision support tools to reduce energy and carbon consumption in buildings through intuitive insights. Their AI-powered digital twin virtualizes building energy management systems for unprecedented savings. They aim to decarbonize and optimize building energy consumption using autonomous AI technology.
- Mar 2024Series A$934.1K
#5
Public · Kirkham, England · founded 2000 · 641 employees$104.2Mraised▾
Inspired Energy Solutions (aka IEA) is an energy consultancy firm that operates in the vertical of renewable energy and energy efficiency field. With a team of more than 400 energy consultants, offers solutions such as energy procurement, market analysis, energy management, retrospective audits, site operations of renewable energy projects.
- Jul 2020Post IPO$13.5M
- Nov 2019Conventional Debt$77.6M
- Nov 2015Conventional Debt$13.1M
#6
Series A · Aberdeen, Scotland · founded 2021$3.9Mraised▾
Provider of energy management consulting services
- Mar 2023Series A$3.9M
#7
Funding Raised · Reading, England · founded 2006 · 851 employees$34.4Mraised▾
Provider of renewable electricity solutions. It supplies gas and electricity to businesses and local authorities with a focus on renewable electricity sourced from SSE’s UK wind and hydro assets. The company offers a range of energy products including onsite generation, battery storage, electric vehicle charging infrastructure, and energy efficiency tools to help customers decarbonize and transition to net zero.
- Feb 2018Grant (prize money)$9.7M
- Dec 2016Grant (prize money)$24.7M
#8
Funding Raised · Belfast, Northern Ireland · founded 2005$2.4Mraised▾
Provider of industrial symbiosis facilitation, resource matching, and decarbonisation strategy services. The company delivers industrial symbiosis training tailored to facilitators, companies, public authorities, and government. It supports industries in reducing emissions across sectors, including construction, food and drink, utilities, and manufacturing. The company participates in international projects, speeches, interviews, and publications.
- Jan 2020Grant (prize money)$262.9K
- Jan 2020Grant (prize money)$222.6K
- Sep 2015Grant (prize money)$1.9M
#9
Public · Billingshurst, England · founded 2005$1.9Mraised▾
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- Jul 2020Conventional Debt$1.9M
#10
Seed · London, England · founded 2022$20Kraised▾
Provider of reliable, hassle-free, and clean energy solutions
- 2023Seed$20K
#11
Funding Raised · London, England · founded 2008$91.7Kraised▾
Provider of multiple energy services. They specialize in helping owners and operators of public and private buildings reduce energy costs and carbon emissions while improving energy security. It provides design, implementation, operation, and maintenance of decentralized energy assets, often at no cost to the end user.
- Feb 2014Grant (prize money)$91.7K
#12
Late Stage · London, England · founded 2021 · 19 employees—raised▾
Developer of solar and wind energy projects. It focuses on supplying large-scale private wire renewable energy solutions to large power users such as IBM. The company fully funds, develops, builds, owns, and operates private wire renewable energy infrastructure, enabling organizations to reduce carbon emissions, cut costs, and secure long-term energy certainty without capital investment.
- Jun 2024PE—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Services for Energy Efficiency coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.