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1st Int. Transborder Conf. of the Timor Island: Timor %u2013 Science without borderDili, 7-8 May 2025103A Study On Carbon Value And Economic Added Value of Biomass As A Renewable Energy Source For Power PlantDavid B.W. Pandie1*, Agus A. Nalle2and Halena M.Asa31Faculty of Social and Political Science, Universitas Nusa Cendana, Indonesia2Faculty of Economics and Business, Universitas Nusa Cendana, Indonesia3Environmental Science, Nusa Cendana University, Kupang, Indonesia*Corresponding author: davidpandie@staf.undana.ac.idAbstractThe issue of global warming, reaffirmed during the COP26 Conference in Glasgow, has encouraged countries to intensify their commitments to clean energy transitions. Indonesia, through its Long-Term Strategy and Nationally Determined Contribution (NDC), has included the development of renewable energy sources%u2014such as biomass from lamtoro (Leucaena leucocephala)%u2014as part of its energy mix, particularly in East Nusa Tenggara Province. This study aims to analyze both government policy frameworks and the economic value added from biomass production using lamtoro as a coal substitute in the co-firing process at the Bolok Steam Power Plant on Timor Island.The research applies Economic Value Added (EVA) analysis and the Hayami method to calculate the value added per kilogram of biomass product. The findings indicate that regional government policies have been formalized through village regulations and multi-stakeholder cooperation agreements. The EVA analysis yielded a positive value of IDR 606,982,844, reflecting the company's strong financial performance. Additionally, the value added per kilogram of biomass was IDR 133.23/kg, or 18% of the processed product%u2019s value%u2014indicating efficient production, although slightly lower than the value from processed biomass briquettes. The study recommends enhancing policy support, developing supporting infrastructure, and promoting continuous innovation to accelerate sustainable biomass energy development in Eastern Indonesia.Keywords: Biomass, EVA analysis, Regulations, environment policy.