Biomass project guide

What is it?

A Biomass Boilers will burn wood pellets, logs or wood chips from sustainable sources and can satisfy all of your heating and hot water needs. We recommend a Biomass Boiler if you live in an older property or are off the mains gas grid.

Biomass Boilers generate an income for you from the government’s Renewable Heat Incentive. The income that you can earn normally exceeds the cost of installation, so your boiler pays for itself while you enjoy long-term savings on the cost of fuel.

What is it suitable for?

Biomass Boilers are most suitable for owners of older properties with space and access for fuel delivery and storage. If you are currently using oil or LPG you will enjoy the largest savings, but biomass is also attractive to mains gas customers looking for a carbon-neutral solution.

We can provide a number of options when choosing your Biomass Boiler and find the right one for your needs.

Please note: as of 5th October 2015, consumers of wood pellets & briquettes are now required to purchase their fuel from an supplier that is on the approved Biomass Supplier List (BSL), as they will prove that the supply is from a certified source (at the time of purchase), to claim any cash benefits as part of the Renewable Incentive Scheme (RHI)

What are the benefits?

  • A Biomass system can be 10% – 30% cheaper than oil

  • It is more efficient than oil or gas

  • Sustainable and carbon neutral

  • It allows you to future proof your energy bills against fossil fuel price hikes

  • The Renewable Heat Incentive (RHI) subsidy covers the cost of installation

How does it work?

A Biomass Boiler works like a traditional oil or LPG boiler – it burns fuel (pellets) to heat your water and your home. It can produce just as much heat as an equivalent oil or gas boiler but use a much cheaper, carbon-neutral fuel; which are fed automatically into your boiler. Replacing your existing boiler is a straight-forward process and your biomass boiler requires minimal maintenance.

How does it compare?

Biomass Boiler:

  • Can be installed easily without the need to change existing piping
  • Requires minimal maintenance
  • Great returns from the RHI Scheme
  • Needs area for pellet storage
  • Option to have manual or automatic feed

Air Source Heat Pumps:

  • Works best with properties that have high insulation
  • Air Source Heat Pumps work better with Underfloor Heating Systems
  • Require a compact outside area
  • Qualify for RHI payments
  • Do not require planning permission

Costs & Savings


  • A typical Biomass Boiler will cost around £9,000 to £21,000 fully installed, dependent upon the model chosen, and the size of the building.


  • Independent figures from the Energy Saving Trust suggest in standard 4-bedroom house you should be able to save between £970 to £1,390 per year compared to an older LPG system and £490 to £880 for electric storage heaters.
  • In addition, you should be able to earn up between £1,245 and £1,880 per year through the Renewable Heat Incentive.