Biomass is under-used for green power and green heat, says UK agency

LONDON, England, 2004-05-19 (Refocus Weekly) Biomass energy is “close to carbon neutral” and is a controllable renewable energy, unlike other renewables, says the Royal Commission on Environmental Pollution.

If Britain is to reduce its CO2 emissions by 60%, “it is vital for the government to concentrate on encouraging low- or non-carbon electrical and heat generation.” says the special report, ‘Biomass as a Renewable Energy Source,’ released by RCEP. “As a component of a renewable energy generation mixture, biomass should play an important role.”

The report examines three types of indigenous biomass fuel: forestry materials, energy crops and agricultural residues. It notes that biomass can also be imported in the form of pelleted sawdust, which is an internationally traded commodity.

“Sufficient biomass is already available to initiate the development of the sector, in the form of forestry products and by-products, straw and municipal arisings,” it notes. “Systematic use of this material will have the additional benefits of providing additional income streams for farmers and foresters, improving forest management, and diverting materials from landfill.”

“In the longer term, the use of biomass for energy will depend at least partially on the production of energy crops,” which would require significant changes in agricultural land-use by 2050. Existing government support measures for biomass are “complex and can conflict with each other,” and the report recommends that “all possible technical measures should be utilised to reduce noise and emissions and to increase efficiency and therefore reduce transportation of fuel.”

“There is a significant gap in government energy policy regarding heat production,” it adds. “Using heat instead of, or as well as, electrical energy could increase conversion efficiencies substantially - from typically 30% to around 80%. Biomass can be a reliable, controllable source of both heat and power and the utilisation of this additional benefit should therefore to be central to biomass exploitation.”

“The scope for biomass as a source of renewable heat needs further investigation,” it concludes. “The introduction of a green heat credit would help to raise the profile and profitability of schemes that use biomass. It would also encourage better efficiency in energy generation and increase the CO2 savings of the UK energy sector.”

The Royal Commission on Environmental Pollution is an independent advisory group that, in 2000, recommended that Britain reduce CO2 emissions 60% by 2050.