HomeMy WebLinkAbout(Attachment G) Gulkana Cost Worksheet Renewable Energy Fund
RFA AEA 09-004 Application Cost Worksheet Page 1
Application Cost Worksheet
Please note that some fields might not be applicable for all technologies or all project
phases. 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. An unlimited amount of cordwood is available in the
region. The village of Gulkana controls at least 10 years
of forested land in the region. GVC also has access to
Ahtna land for additional biomass.
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 8 Boilers – 4 Toyostoves- 2 Forced Air Gun Furnaces
ii. Rated capacity of generators/boilers/other
iii. Generator/boilers/other type Boilers Toyostoves Furnace
iv. Age of generators/boilers/other 20 years 11 Years 20 Years
v. Efficiency of generators/boilers/other 75-80% 88% 75%
b) Annual O&M cost
i. Annual O&M cost for labor 0, sunken cost, part of regular duties of O&M staff
ii. Annual O&M cost for non-labor $7,000
c) Annual electricity production and fuel usage (fill in as applicable)
i. Electricity [kWh] NA
ii. Fuel usage (if system is part of the Railbelt grid, leave this section blank
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] 17,227 gallons #1 heating oil @ 134,000 BTU/gal
(including projections from new bus garage scheduled to
be constructed in the coming year)
Renewable Energy Fund
RFA AEA 09-004 Application Cost Worksheet Page 2
ii. Electricity [kWh]
iii. Propane [gal or MMBtu]
iv. Coal [tons or MMBtu]
v. Wood [cords, green tons, dry tons]
vi. Other
3. Proposed System Design
a) Installed capacity The wood-fired hydronic heater would be set up in a
separate building, and would consist of two Garn® Model
3200 wood-fired heaters, with a total water capacity of
6,400 gallons. This boiler is sized to provide 60% of the
peak building load with a six hour interval between firings.
The water capacity of the boiler is sized so that it would
serve as a thermal storage bank for the facility, and would
require intermittent firing. In this configuration, it is
anticipated that the wood-fired boiler would meet 85% of
the buildings’ heating needs.
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] Cordwood will provide 80% to 90% of the heat for the
facilities at 60% peak load. At a boiler efficiency of 75%,
this translated to 147 cords of wood per year, or
approximately 214 green tons of cordwood
vi. Other
4. Project Cost
a) Total capital cost of new system $898,000 (includes development costs)
b) Development cost $98,000 (engineering, permitting & project management)
c) Annual O&M cost of new system $44,518 (includes $41,208 fuel [wood & oil] and $7000
electricity & parts)
d) Annual fuel cost $41,208
5. Project Benefits
a) Amount of fuel displaced for
i. Electricity
ii. Heat 14,643 gal. (17,227 x .85) year 1
Renewable Energy Fund
RFA AEA 09-004 Application Cost Worksheet Page 3
iii. Transportation
b) Price of displaced fuel $62,125 (13,600 gal. x $4.57 per gal)
c) Other economic benefits Local employment and revenue for supplying cordwood
d) Amount of Alaska public benefits $37,518 year 1
6. Power Purchase/Sales Price
a) Price for power purchase/sale NA
7. Project Analysis
a) Basic Economic Analysis
Project benefit/cost ratio 0.48:10yr; 1.07:20yr; 1.48:24yr: 1.58:25yr; 2.24:30yr
Payback $898,000/$37,518/year = 24 years