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Economic and Financial Analysis of Cofiring the Coal Fired Steam Power Plant Capacity 660 MW with Biomass (Sawdust)

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A B S T R A C T
Research on Cofiring of the Existing Coal Fired Power Plant with biomass in the form of
sawdust with a mixture percentage of 5% was carried out with the main objective of pursuing
the acceleration of the renewable energy mix target of 23% (Green Booster) by 2025, with
minimal CAPEX costs if compared to building new hydro or solar PV plants. At the initial
stage of the activity, testing and analysis of the effect of cofiring will be carried out on several
main parameters of the Existing PLTU's performance, as well as its reliability. In addition, it
is also at the same time to get an overview and evaluate if the cofiring plan will be
implemented through technical operational evaluations, the cost of production from the aspect
of fuel costs (component C) and exhaust emissions to the environment. From the results of
monitoring the operating load at around 635 MW (gross) using 5% cofiring, it can be seen that
critical points such as main steam temperature, main steam pressure, gas economizer outlet
temperature, mill outlet temperature do not show a significant increase, meaning they are still
within the operating limits, reasonable and safe. From the calculation of the cost of fuel, the
coal price is IDR 594 per kg, and sawdust price of IDR 472 per kg (on site) using the SFC
difference of 0.0077 kg/kwh, and the CF assumption of 80%, then with an average annual
electricity production of 4,415,040,000 kwh/year, fuel savings of around IDR 35.32 billion
per year will be obtained. Exhaust gas emissions to the environment for SO2 and NOx still
meet the environmental quality standard requirements according to the Minister of
Environment and Forestry Regulation No.15 of 2019.
KEYWORDS
Biomass, Cofiring, Green Booster, Sawdust

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Series Title

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Call Number

621.381

Publisher

: Universitas Andalas., 2021

Collation

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Language

English

ISBN/ISSN

2777-0079

Classification

621.381

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Edition

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Subject(s)

Elektronika
teknik elektronika

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