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HomeMy WebLinkAboutRound_IV_Costworksheet WW Renewable Energy Fund Round 4 Project Cost/Benefit Worksheet RFA AEA11-005 Application Cost Worksheet Page 1 7-21-10 Please note that some fields might not be applicable for all technologies or all project phases. The level of information detail varies according to phase requirements. 1. Renewable Energy Source The Applicant should demonstrate that the renewable energy resource is available on a sustainable basis. Annual average resource availability. Unlimited year round supply of wastewater effluent at 46F to 53F at the discharge into Sitka Sound Unit depends on project type (e.g. windspeed, hydropower output, biomasss fuel) 2. Existing Energy Generation and Usage a) Basic configuration (if system is part of the Railbelt1 grid, leave this section blank) i. Number of generators/boilers/other Total of two heating oil boilers and two oil heaters ii. Rated capacity of generators/boilers/other Two boilers rated at 81700 BH, two oil heaters at 199000 BH iii. Generator/boilers/other type Weil McClain TL 58-6 boilers and AO Smith Oil heaters COF1199 iv. Age of generators/boilers/other 1984 v. Efficiency of generators/boilers/other Estimated efficiency is 82 - 84% b) Annual O&M cost (if system is part of the Railbelt grid, leave this section blank) i. Annual O&M cost for labor To be determined in evaluation ii. Annual O&M cost for non-labor To be determined in evaluation c) Annual electricity production and fuel usage (fill in as applicable) (if system is part of the Railbelt grid, leave this section blank) i. Electricity [kWh] This project addresses heat production, not electricity generation ii. Fuel usage Diesel [gal] Other iii. Peak Load iv. Average Load v. Minimum Load vi. Efficiency vii. Future trends d) Annual heating fuel usage (fill in as applicable) i. Diesel [gal or MMBtu] Waste Water Treatment Plant - 10,600gal #2 heating oil/year ii. Electricity [kWh] iii. Propane [gal or MMBtu] iv. Coal [tons or MMBtu] 1 The Railbelt grid connects all customers of Chugach Electric Association, Homer Electric Association, Golden Valley Electric Association, the City of Seward Electric Department, Matanuska Electric Association and Anchorage Municipal Light and Power. Renewable Energy Fund Round 4 Project Cost/Benefit Worksheet RFA AEA11-005 Application Cost Worksheet Page 2 7-21-10 v. Wood [cords, green tons, dry tons] vi. Other 3. Proposed System Design Capacity and Fuel Usage (Include any projections for continued use of non-renewable fuels) a) Proposed renewable capacity (Wind, Hydro, Biomass, other) [kW or MMBtu/hr] Anticipated system is two 60 ton heat pumps (1440 MBH total heating capacity) with seawater as source; and 60 Ton cooling capacity from new titanium plate heat exchanger. Final recommendation of heating and cooling equipment will be made in the evaluation. b) Proposed annual electricity or heat production (fill in as applicable) i. Electricity [kWh] ii. Heat [MMBtu] 1,453 MMBtu (equivalent of 10,600 gal heating oil/ year) c) Proposed annual fuel usage (fill in as applicable) i. Propane [gal or MMBtu] New heat pumps are anticipated to consume @133,000 KWH grid electricity/year to produce 1,453 MMBtu for anticipated annual heat pump system COP of 3.2 ii. Coal [tons or MMBtu] Existing heating oil boilers anticipated to consume 3,730 gallons of #2 heating oil per year to cover peak loads during periods of cold effluent and ambient air temps, this is a 70% reduction over existing usage iii. Wood [cords, green tons, dry tons] iv. Other 4. Project Cost a) Total capital cost of new system To be determined in evaluation b) Development cost $20,000 for technical and financial evaluation by professional engineering consultant (this grant application) c) Annual O&M cost of new system To be determined in evaluation d) Annual fuel cost To be determined in evaluation 5. Project Benefits a) Amount of fuel displaced for i. Electricity ii. Heat 10,600 gallons of #2 heating oil is anticipated to be displaced by effluent heat pumps iii. Transportation b) Current price of displaced fuel $2.74/gallon for #2 heating oil; $0.0936/KWH for local grid electricity c) Other economic benefits d) Alaska public benefits Show potential for use of effluent heat pump systems in Renewable Energy Fund Round 4 Project Cost/Benefit Worksheet RFA AEA11-005 Application Cost Worksheet Page 3 7-21-10 other SE Alaska communities 6. Power Purchase/Sales Price a) Price for power purchase/sale n/a 7. Project Analysis a) Basic Economic Analysis Project benefit/cost ratio $29,044 estimated annual benefit / $20,000 evaluation cost Payback (years) When included with the heat pump design and construction project (@$370,000) that is expected to follow, the payback on the evaluation, design, and construction is estimated to be in the range of 12 to 15 years with current energy prices.