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2023 Clean Heat Accelerator cohort

Meet the businesses that participated and learn how the accelerator helped them scale and innovate.

The 2023 Clean Heat Accelerator supported a group of small businesses and start-ups that focus on developing clean heat and energy efficiency solutions.

Learn about their experiences in the Clean Heat Accelerator, the insights they gained, and the impact the programme had on their business growth.

Participant video stories

  • Jonathan Siviter, Thermoelectric Conversion Systems

  • Joan Pisanek, Cenergist

Feedback from participants

2023 Clean Heat Accelerator participants

Cenergist

Cenergist specialises in design, funding, and consultancy for heating and hot water projects. It currently holds 5% of the UK domestic delivery market for communal and district heating works. 

Cenergist specialises in retrofitting occupied social housing, with an established portfolio of social housing suppliers across the UK. It has delivered extensive mechanical and engineering projects, with large multi-skilled contracts, for communal and district heating systems using gas, air and ground source heat pumps, biomass, and hybrid fuels.

IMS Heat Pumps

Established in 1997, IMS Heat Pumps has been working with ground, air, and water source heat pumps for over 25 years. Its in-house team designs systems that are then installed by its skilled and knowledgeable engineers.

IMS works with homeowners, architects, and main contractors on self-build, renovation, and replacement boiler projects across Scotland, the North, and the Midlands. The company is MCS accredited and TrustMark approved.

Lochlie Construction

Established in 2014, Lochlie Construction Group is an experienced and trusted building contractor. It works across a variety of commercial and residential projects in Glasgow and the west of Scotland.

The company is family owned and run and offers a wide range of services. These include construction and refurbishment for both private domestic and commercial clients, as well as maintenance services for both the public and private sector. It also offers steel building solutions for the commercial market in partnership with the UK’s leading steel and cladding suppliers.

O’Neil Gas, Plumbing and Electrical

O’Neil provides a range of maintenance and installation services for domestic and commercial clients.This includes gas, plumbing, and electric services, as well as low carbon heating solutions such as solar, battery storage, and air source heat pumps.

The company carries out repair and installation work for large commercial clients such as NHS Scotland, as well as one-off gas, plumbing, and electrical repairs. It's qualified to install electric vehicle charging stations and its engineers are working towards accreditation on a solar and battery storage training course.

Renewable Heat Installation and Servicing

Renewable Heat designs, supplies, installs, and maintains heat pump systems. It works with both ground and air source heat pumps in domestic homes, providing services for self-built projects as well as bespoke designs for existing homes.

Soltropy

Soltropy has invented a unique, patented solar thermal heating panel to help decarbonise buildings' space and water heating.

The panel can freeze and overheat without damage. It's modular and uses a continuous flexible pipe to create panels of any width with no interconnections. Because it doesn't use antifreeze, it can use water as the heat exchange fluid and design larger systems without restriction.

Sourcethermal

Sourcethermal started by offering consultancy services for thermal systems development, including design, software, and physical prototyping of refrigeration and heat pump assemblies. It helps UK companies that are eager to enter the market with new products and need a demonstrable proof of concept. 

The company’s ambition is to establish Thermalhub, a prototyping facility in Edinburgh that will help local companies produce new technologies to decarbonise homes and vehicles.

Tantallon Energy 

Tantallon Energy helps customers reduce their carbon footprint by installing and supporting renewable heating technologies and improving the energy efficiency of their homes and businesses.

Trading as Pellets2Heat, Tantallon Energy provides biomass and solar thermal heating products and services. Trading as Smart Home Expert, it installs electric vehicle charging points and helps domestic and commercial clients use smart technologies to manage their energy consumption.

Thermoelectric Conversion Systems

Thermoelectric Conversion Systems Ltd is a technology business that operates from Clydebank Business Park. It provides a wide range of thermoelectric-based power generation products, cooling and heat pump products, and associated technologies to the electronics, automotive, medical, industrial, and academic sectors. 

TownRock Energy

TownRock Energy (TRE) is an award-winning geothermal and renewable heat consultancy based in Scotland. TRE specialises in the valuation of flooded coal mines, hot sedimentary aquifers, granites (hot dry rock), and thermal energy storage. 

TRE has extensive experience evaluating, designing, planning, fundraising for, developing, and operating geothermal heating and cooling schemes. 

Turnbull and Scott

Turnbull and Scott’s heat recovery solutions turn process flue gases into usable heat. This allows the recovered heat to be repurposed for space heating or other processes.

The company is also developing its product offering in thermal storage, heat pumps, and low-temperature emitters by building on its new, efficient electric thermolier.

Apply for the 2025 Clean Heat Accelerator

The Clean Heat Accelerator is accepting applications from Scottish start-ups and businesses for its 2025 programme.

If you’re developing clean heat or energy efficiency solutions, the accelerator can help. It offers tailored support, mentorship, and access to industry networks to help you scale and grow.

Learn more and apply for the 2025 accelerator