Small Scale Coal Power Plant in Indonesia - Expert Group on Clean ...

<strong>Small</strong> <strong>Scale</strong> <strong>Coal</strong> <strong>Power</strong><strong>Plant</strong> <strong>in</strong> <strong>Indonesia</strong>Taufik Sastraw<strong>in</strong>ataDirector Technology and Bus<strong>in</strong>ess Developmentof PT. Advance Technology <strong>Indonesia</strong> andSecretary General of <strong>Indonesia</strong>n <strong>Coal</strong> Society<strong>Indonesia</strong>ASIA PACIFIC ECONOMIC COOPERATIONEXPERT GROUP ON CLEAN FOSSIL ENERGY

DEMAND OUT SIDE JAVA BALIBy 2001, power plant capacity out sideJava Bali 5,385 MW :• Diesel <strong>Plant</strong> contributes 45 %• CCGT & OCGT 27 %,• Steam <strong>Power</strong> <strong>Plant</strong> 14 %,• Hydro 13 % and• 1 % is geothermal, solar and others.

National Electricity LawCurrently, electricity power supply anddistribution managed by state ownedcompany, PT PLNFuture, electric power supply anddistribution will be directed to multibuyers-multi sellers

Several identified advantages ofdevelop<strong>in</strong>g small scale power plant• more competitive compared to Diesel <strong>Plant</strong>.• provide electricity to coal m<strong>in</strong><strong>in</strong>g process• f<strong>in</strong>anc<strong>in</strong>g capability to <strong>in</strong>stall, <strong>in</strong> which <strong>in</strong> l<strong>in</strong>ewith the f<strong>in</strong>anc<strong>in</strong>g capabilities of the country.• requires 20 kV l<strong>in</strong>es to distribute its generatedelectricity• easier and faster to <strong>in</strong>stall.• absorb of up to 80 % of local content

Implementation of small scale coalpower plant• Utiliz<strong>in</strong>g good eng<strong>in</strong>eer<strong>in</strong>g practices compatiblewith the exist<strong>in</strong>g system.• Achiev<strong>in</strong>g an environmentally acceptable• Achiev<strong>in</strong>g the highest economically feasible levelsof efficiency, reliability, safety and availability.• Optimis<strong>in</strong>g the operation and ma<strong>in</strong>tenance (O&M)procedures of the equipment and facilities,• Utiliz<strong>in</strong>g local available coal as the energy source,• Ensur<strong>in</strong>g the majority of the plant staff, as they are<strong>Indonesia</strong>n personnel

OTHER BENEFIT• The availability of economically priced capacityand energy will lead to accelerate <strong>in</strong>dustrialdevelopment and to lower cost of production.• It will maximize the use of <strong>Indonesia</strong>nmanufactured goods and services and theutilization of established <strong>Indonesia</strong>n companies <strong>in</strong>order to enhance the <strong>in</strong>dustrial development.• Development to the local economy and the localcommunity.• Enhance the attraction of <strong>in</strong>dustry to the region.

The coal fired Steam <strong>Power</strong> <strong>Plant</strong>• Consist of 2 (two) complete Stoker Boiler,capable of burn<strong>in</strong>g and fired with a widerange of coal• The efficiency of the boiler is 84 % andoverall efficiency is 21 %.• Steam will be fed <strong>in</strong>dividually to thes<strong>in</strong>gle flow condens<strong>in</strong>g steam turb<strong>in</strong>e, forelectric generator driv<strong>in</strong>g.

1. Steam generatorTypeSteam FlowFeedwater Temperature: Natural Circulation: 38 ton/hr: 150 o CTemperature : 150Superheater Steam Outlet PressureSuperheater Steam Outlet Temperature: 450 o CDraft System: 38 kg/cm2: Balanced Draft2. Grate and Spreader3 Air Pollution Control: Electro static Precipitator4. Fuel Handl<strong>in</strong>g:Belt Conveyor<strong>Coal</strong> Storage<strong>Coal</strong> Storage Bunker5. Ash Handl<strong>in</strong>g

6. Steam Turb<strong>in</strong>e SystemTypeRated OutputSpeedMa<strong>in</strong> Steam PressureMa<strong>in</strong> Steam Temperature : 435: Condens<strong>in</strong>g: 7.000 kW: 3000 rpm: 35 kg/cm2: 435 o C7. Chlor<strong>in</strong>ation System: Electrolysis Analyzer8. Water Treatment and Dr<strong>in</strong>k<strong>in</strong>g SystemRaw Water Treatment And Reverse Osmosis Pre-TreatmentRo Pre-Treatment (Ultra filtration)Reverse Osmosis And Dem<strong>in</strong> Water Tank9. Waste Water Treatment

<strong>Plant</strong> Schematic

Boiler General Arrangement

Boiler Island

Economic AnalysisTariff Rates would be US 5 Cents/kWh, with thetotal project cost rang<strong>in</strong>g USD 13-15 15 MillionsThe Tariff Structure proposed consists of four (4)payment elements:• Capacity Charge – Component A (Capital CostRecovery Charge)• Fixed O&M Charge – Component B• Fuel Payment Charge - Component C (EnergyCharge)• Variable O&M Charge – Component D

ComponentCapacity ChargeFixed O&M ChargeFuel ChargeVariable O&M ChargeTotal Electricity TariffTariffUS$ 2.71 centsUS$ 0.94 centsUS$ 1.24 centsUS$ 0.21 centsUS$ 5.00 cents

Calculated electricity price is based on• Gross Capacity14.00 MW• Net Contractual Capacity12.68 MW• Potential Availability Factor 92 %• Capacity Factor (CF) 80 %• Caloric Values5,100kcal/kg (LHV)• Fuel CostUS$ 15 per Ton• Operation Period20 years• Interest Rate 6 %• Internal Rate of Return (IRR) 11.0 %• Payback Period8 years• Currency Exchange Rate US $1 = Rp. . 8,500

National ProductMemorandum of Understand<strong>in</strong>g:1. M<strong>in</strong>ister of Energy and M<strong>in</strong>eralResources,2. M<strong>in</strong>ister of Industry and Trade, and3. M<strong>in</strong>ister of Research and Technology /Chair of Agency for the Assessmentand Application of Technology

70 % eng<strong>in</strong>eered and manufactured locally.10 units every year will be constructed.Diesel generator will cost around US$ 9 – 10cents per kWh and small-scale scale coal powerplant will cost US$ 5 cents per kWh.