The issue of high carbon emissions from coal-fired power plants under the dual carbon goals urgently needs to be addressed. Biomass is a fuel with zero carbon emissions throughout its entire life cycle

and co-combustion of coal and biomass can significantly reduce the carbon emissions of coal-fired power plants. The cost of biomass fuel is relatively high

and corresponding financial subsidies are needed to ensure profitability. However

the lack of measurement methods for biomass blending ratio makes it difficult to implement biomass financial subsidy policies

and the development of biomass blending power generation is slow. This paper reviews the biomass co-combustion power generation technology and the relevant policies of biomass power generation at home and abroad. It introduces the basic mechanisms and development status of six biomass blending ratio measurement methods

including image recognition method

flame signal method

SO2 method

mass-energy balance method

14C method

and 13C method. It also summarizes the advantages and disadvantages of each method. The studies related to 14C method and 13C method are highlighted. Finally

the development trend of biomass blending ratio measurement method is prospected.