Reduce emissions, lower energy bills and generate income with a renewable heat solution from Locogen

More than half (51%) of the energy we consume in our homes and businesses is used for heating. This makes renewable heat a vital part of our efforts to reduce emissions - and our energy bills. The Scottish government has introduced tough targets for the decarbonisation of heat, with 35% of domestic and 70% of non-domestic properties to have renewable heating by 2032.

To achieve this, both the UK and Scottish governments have introduced a variety of grants, incentives and loans, making renewable heating systems an extremely financially attractive option.

Locogen’s renewable heat division has been operating since 2004 and has installed several hundred systems on both domestic and commercial properties. Our experienced renewable heat engineers are fully accredited to advise on, design, install and maintain a wide range of renewable heating technologies. They will assess your heat requirements and then advise you on the most appropriate system for your specific circumstances. They can also advise you on available grants and loans and make sure your system is properly registered to receive the renewable heat incentive. As an experienced renewable energy company working across a range of technologies, we can also advise on and install complementary technologies, such as solar PV, electrical vehicle charging points and battery storage.

Some of our renewable heat technologies

  • Air Source Heat Pumps

  • Ground Source Heat Pumps

  • Wood Stoves, Back Boilers & Thermal Stores

  • Biomass Boilers

  • Biomass CHP

  • Solar Thermal

  • Underfloor Heating

  • District Heating


Popular Renewable Heat Technologies for the Home

Some technologies are particularly suited to domestic properties. These include air source heat pumps, ground source heat pumps and biomass boilers and we have a closer look at these below.

Air Source Heat Pumps (ASHP) are a popular and cost-effective option for many homes. You already have a heat pump in your home – your fridge. It absorbs heat from inside the fridge and expels it to the exterior of the unit. An ASHP uses the same technology but runs in reverse, taking heat from the outside air, concentrating that energy and using it to provide space heating and hot water inside your home.

Diagram of air source heat pump with solar panels

  • Ambient air is pulled into evaporator by electric fan

  • Air heats liquid refrigerant in the evaporator, changing it from liquid to gas

  • This gas is compressed by electric compressor, significantly increasing temperature

  • Hot gas passed through a condenser, transferring heat to water to be used in the home

  • Gas passes through expansion valve to cool and start process again


Ground Source Heat Pumps (GSHP)

Ground source heat pumps utilise a very similar process to air source heat pumps but collect heat from the ground instead of the air. The ground absorbs solar energy from sunlight and rain. In the UK, the ground absorbs enough solar energy to maintain a year-round temperature of around 8-12 °C.

  • Water/antifreeze mix pumped through ground in heat absorbing ground array pipes

  • Ambient heat flows from warmer ground into cooler liquid, warming liquid to ground temperature

  • Heat exchanger transfers this heat to refrigerant, which boils and turns into gas

  • Compressor increases gas pressure, greatly increasing temperature

  • Heated gas flows into condenser, transferring heat to water for space heating and domestic hot water

  • Gas cools, returns to liquid and passes through expansion valve for process to start again


Biomass boilers

Biomass boilers use very similar technology to traditional gas or oil boilers. The difference is that they use sustainable wood (logs, chips or pellets) instead of fossil fuels. These biomass fuels are considered a renewable fuel – the carbon dioxide they produce when they are burnt is offset by the carbon dioxide they absorb while they are growing. Biomass boilers will typically burn wood chips, pellets or logs. Of these, pellets are the densest energy source, so less space is needed for storage and pellet boilers are often preferred where space is an issue







End-to-End Service in Renewable Heat

Renewable heat services flow chart

Locogen offers a complete, end-to-end service, from initial concept right through to system handover and maintenance. With 100s of successful installations since 2004, our proven processes ensure success. We will tailor our service offering to your specific project, ensuring the most streamlined and economical process but our full range of services incudes:

Energy Audits

  • SAP calculations

  • U value calculations

  • Thermal bridging analysis

  • New build dwelling Energy Performance Certificates (SAP)

  • Existing dwelling Energy Performance Certificates (rdSAP)

Specification & Design

  • Concept/ Feasibility with Budget Costings

  • Planning applications / input

  • Building Warrant applications / input

  • Liaise with local authorities and other contractors

  • Detailed drawings and specification with bill of quantities for direct purchase/ pricing

  • prepare tenders and manage process

Commissioning & Verification

  • Inspect work on site if needed

  • Commissioning

  • Certification if required

The Financial case

Installing a renewable heat solution from Locogen is not just environmentally sound, it makes financial sense too. Lower energy bills, interest-free loans and income from the renewable heat incentive combine to make an attractive package. In Scotland, the Energy Saving Trust offers an unsecured and interest free Home Energy Scotland loan, designed to pay for your renewable heat installation. See below for indicative savings when comparing some of the most popular domestic renewable heat solutions

Technology Costs vs Oil

A cost comparison table of renewable heat technologies


  • Domestic- 18,000kWh/s Space heating, 2000kWh/a DHW

  • RHI as per OFGEM tariffs (May 18)

  • Electric 16p/kWh, Oil 6p/kWh, Biomass 6p/kWh


  • ASHP 310%

  • GSHP 330%

  • Oil 85%

  • Biomass 82%,

  • Electric 100%


Help With Government Support Schemes

The UK government recognises the vital role to be played by renewable heat in meeting our climate change targets and has developed a suite of incentives, grants and loans to encourage the uptake of these systems. Schemes such as the Renewable Heat Incentive and Home Energy Scotland loans can make the financial case for installing renewable heating systems extremely compelling. Locogen’s renewable heat experts can guide you through the application process and ensure you receive the appropriate support.

Next Steps

Contact us to discuss your requirements or email Your site survey is free and our experienced engineers will advise on the most appropriate renewable heating solution for your own circumstances.