Key Facts

Project Included;

  • 3 x Guntamatic 100kW Powerchip boiler systems.
  • 3 x 2,000 litre thermal stores and automatic ash removal.
  • Distribution pipework with internal connections to heat and exchangers and consumer interface units.
  • Remote monitoring.

Fuel Consumption;

  • 82 tonnes of wood pellets or 112 tonnes of wood chips, per annum. (Based on 3 x 100kW boilers, running for 1,314 hours a year in a similar application)

Fuel Cost Saving;

  • Wood pellets; 20-40% wood chips 50-80% vs heating oil. (Source; Biomass Energy Centre)

CO2 Saving;

  • Up to 96% or 240 tonnes vs heating oil. (Source; Biomass Energy Centre)

RHI Payments;

  • A project of this size would gain upwards of £33,924 every year for 20 years, index linked to inflation.

Total Project Price;

  • £350,000.

Payback Period;

  • 6-7 years (combining RHI income & fuel cost saving).

(*Financial information not specific to this project – figures are based on an average of several typical projects of this size. Current information on RHI payments for guidance only, not to be considered a guarantee).

The System:

  • 3 x Guntamatic Powerchip 100kW biomass boilers.
  • Biomass specified in place of heating oil.
  • Run on wood chips.
  • Supplies heating and hot water to 72 properties in three separate district heating schemes.

The Result:

  • Biomass Fuel Cost Saving; 50-80% vs heating oil. (Source; Biomass Energy Centre)
  • CO2 Reduced; Up to 96% or 240 tonnes, per annum vs heating oil. (Source; Biomass Energy Centre)
  • RHI Payments; A project of this size would gain approximately £33,924 every year for 20 years, index linked to inflation.
  • Financial Benefit; Fuel cost saving and RHI income to be reinvested to reduce tenant and owner cost of occupancy.

Biomass Plant Room Drawing Download

Working with an experienced installer has been a real benefit to the delivery of the project. With Treco also taking on the long term support of the installation, it means that households will continue to receive guaranteed renewable heating in the long term.

Rod Pope, Lomand Homes

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Perryfields - Project Background

Perryfields is a 72 unit housing development in Portland, Dorset built by Lomand Homes. The development features an integrated mix of private ownership, affordable and 22 units of social housing.

The Requirement

Lomand Homes wanted the Perryfields development to incorporate highly energy efficient homes with low occupancy costs. The properties were designed to make the most of insulation, low energy lighting, heat recovery and recirculation. Biomass district heating was specified to also give the development energy efficient heating.

Complete Biomass District Heating Package

Treco supplied and installed three 100kW Guntamatic Powerchip biomass boilers, commissioned to burn wood pellets.

Each boiler supplies a network of houses and appartments via a large district heating scheme. The system delivers low operating costs and automatic ash removal. The boilers were each installed with a 2,000 litre buffer tank. Large fuel stores automatically feed wood pellets into the boilers.

Heat is supplied to each unit via an underground heat main. Consumer Interface Units were fitted into each property, enabling automatic billing and the easy calculation of RHI Payments.

Project Summary

Treco‘s design, installation, commissioning and maintenance service included;

  • Three top-of-the-range 100kW Guntamatic Powerchip biomass boilers with automatic de-ashing.
  • Biomass boilers linked and plumbed into existing heating and hot water system.
  • 3 x 2,000 litre thermal stores.
  • Fully automated wood pellet fuel delivery.
  • 2.5m agitator and 2.5m auger per boiler to enable a large enough fuel store to be built in order to minimise the time between fills.
  • Supply of underground heat main.
  • Consumer Interface Unit and RHI approved heat meters, allow remote monitoring and record heat use in kWh (on which RHI payments are based) complete with certification.
  • Assistance with RHI application including schematic drawings.
  • Commissioning, programming, end user training, service support & maintenance.

Renewable Heat Incentive

As well as delivering fuel cost savings of 20-40% with wood pellets and 50-80% with wood chips, Perryfields is now accredited into the Renewable Heat Incentive (RHI). This will enable them to gain significant payments per unit of heat generated and used by submitting quarterly meter readings to OFGEM.

A project of this size would gain upwards of £33,924 every year for 20 years, index linked to inflation.

Longer term, control of the district heating system will be passed on to a tenant and owner, community-led company, giving long-term low cost of occupancy.

Technical Details

Technical Information (Per Boiler)

  • Heat output from 20 to 100kW.
  • Dimensions; 1,875w x 1,845h x 980d (mm).
  • Weight; 865kg (not incl. 75kg feed auger).
  • Fuel; wood chips, wood pellets, grain and miscanthus.
  • Boiler output; perfect modulation at up to 96% efficiency from 26%-100% of output.
  • Moving step grate allows the boiler to cope with a wide variation in fuel quality.
  • Boiler temperature; 60-80oC.
  • Return flow temp. regulated to protect boiler.
  • Water capacity; 256 Litres.
  • Operating pressure; Max 3 Bar.
  • Flue connection diameter; 180mm.
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