Coal Fird Boiler with Advanced Biomass Co-Firing Technologies

The exisitng biomass co-firing technology has already been used in coal-fired power plants for the world wide. This decision was somewhat controversial in that it was recognized that the costs of co-firing projects at existing coal-fired power plants were likely to be significantly lower than those of establishing new, dedicated biomass to energy plants.
There was a risk, therefore, that the operators of existing coal-fired power plants would be in a position to purchase all of the available biomass materials for co-firing, to the exclusion of other biomass conversion technologies.

On balance, it was decided that co-firing should be eligible within the Renewable Obligation, to provide a much-needed boost to the biomass supply infrastructure in Britain, and particularly to provide secure markets in the short-medium term for energy crop materials. Because of the concerns noted above, limits were placed both on the total quantity of eligible ROCs from co-firing, and on the timescales over which co-firing is eligible under the Obligation.

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One of the results of the introduction of the Renewable Obligation in April 2002 has been a dramatic increase in biomass co-firing involving all of the large coal-fired power plants in Britain. To date, the total cumulative power generation by biomass co-firing is in excess of 6.5 million MWh.

The technology of biomass co-firing represents a total additional income to the stations in excess of £300 million. All of these plants have been co-firing on a commercial basis, however the levels of co-firing on a station-by-station basis has varied markedly.

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