Steam Boiler - Biomass Boiler 300-1500kW

Boilers, fuelled by solid biomass, with rated heat outputs between 300kW and 15000kW, and thermal efficiencies of at least 76% (based on net calorific value), are eligible for Enhanced Capital Allowances when tested at MCR in accordance with the agreed procedures below.

BS 845-1:1987. Methods for assessing thermal performance of boilers for steam, hot water and high temperature heat transfer fluids. Concise procedure. Where BS845: Part 1:1987 is used, the standard test conditions are a maximum ambient air temperature of 25 degrees Centigrade and a minimum excess combustion air level of 40%. The boiler must be operating at its maximum continuous rating (ie. 100% MCR) during the tests.

Eligible Equipment
The equipment eligible for the ECA will be the boiler and ancillaries necessary for its operation and the immediately associated fuel reception, storage and handling equipment. A heat accumulator may also be included where the nature of the heating load makes this necessary to maintain efficient combustion. The associated heating distribution system is not included, nor is any fossil fuel boiler installed as a reserve, or peaking, arrangement.

The Waste Incineration Directive
Installations intended for applications subject to the Waste Incineration Directive are not eligible for ECAs.

Animal by-products
Installations intended for applications burning animal wastes or by-products are not eligible for ECAs.

Dry fuel pellets
Hogged or chipped wood, < 50mm with a moisture content below 35% as received basis, and other similar categories.

Regulatory measures
Eligibility for ECAs in no way exempts installations from the requirements of the Clean Air Act, or any other regulatory measure.