HomeMy WebLinkAboutCost WorksheetKotzebue Electric Association Vanadium Red-Ox Flow Battery
Energy Storage Project
Renewable Energy Fund Grant
October 8th 2008
Page 42 of 53
1. Renewable Energy Source
The Applicant should demonstrate that the renewable energy resource is available on a
sustainable basis.
Annual average resource availability. N/A for Energy Storage
Unit depends on project type (e.g. windspeed, hydropower output, biomasss fuel)
2. Existing Energy Generation
a) Basic configuration (if system is part of the railbelt grid, leave this section blank)
i. Number of generators/boilers/other 6
ii. Rated capacity of generators/boilers/other (#7-1,135 kW); (#15-2,865 kW); (#10-3,080 kW) (#11-1,000 kW);
(#12-850 kW); (#14-2,865 kW)
iii. Generator/boilers/other type (#7-CAT 3516); (#15-EMD 16-710); (#10-EMD 20-710) (#11-CAT 3512);
(#12-CAT 3512); (#14-EMD 16-710)
iv. Age of generators/boilers/other (#7-1987); (#15-1983); (#10-1992) (#11-1992);
(#12-1992); (#14-1994)
v. Efficiency of generators/boilers/other 14.5 kWh/gallon
b) Annual O&M cost
i. Annual O&M cost for labor $36,390 in ’07
ii. Annual O&M cost for non-labor $43,142 in ’07
c) Annual electricity production and fuel usage (fill in as applicable)
i. Electricity [kWh] 21,000,000 kWh per year
ii. Fuel usage (if system is part of the Railbelt grid, leave this section blank
Diesel [gal] 1,400,000 gallons per year
Other
iii. Peak Load 3700 kW
iv. Average Load 2500 kW
v. Minimum Load 1700 kW
vi. Efficiency 14.5 kW/gallon
vii. Future trends
d) Annual heating fuel usage (fill in as applicable)
i. Diesel [gal or MMBtu] n/a
ii. Electricity [kWh] n/a
iii. Propane [gal or MMBtu] n/a
iv. Coal [tons or MMBtu] n/a
v. Wood [cords, green tons, dry tons] n/a
vi. Other n/a
Kotzebue Electric Association Vanadium Red-Ox Flow Battery
Energy Storage Project
Renewable Energy Fund Grant
October 8th 2008
Page 43 of 53
3. Proposed System Design
a) Installed capacity 600 kW/1800 kWh
b) Annual renewable electricity generation
i. Diesel [gal or MMBtu]
ii. Electricity [kWh]
iii. Propane [gal or MMBtu]
iv. Coal [tons or MMBtu]
v. Wood [cords, green tons, dry tons]
4. Project Cost
a) Total capital cost of new system $3,402,943
b) Development cost $527,456
c) Annual O&M cost of new system $91,669
d) Annual fuel cost n/a
5. Project Benefits
a) Amount of fuel displaced for
i. Electricity Being very conservative 137,821 gallons
ii. Heat
iii. Transportation
b) Price of displaced fuel At $4.25 this is $585,739.
c) Other economic benefits Ability to increase wind capacity:
d) Amount of Alaska public benefits
6. Power Purchase/Sales Price
a) Price for power purchase/sale n/a
7. Project Analysis
a) Basic Economic Analysis
Project benefit/cost ratio Total 20 year NPC Existing System $158,117,824 / NPC Proposed 149,502,048
= 1.05.
Payback 3.12 years