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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. A nearly inexhaustible amount of cordwood is available
in the region. Ahtna, Inc. controls vast amount of
forested land in the region. Ahtna has provided the
attached letter of commitment to provide CTC access to
all of the cordwood necessary for the project.
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 1 Boiler – 3 small oil heaters
ii. Rated capacity of generators/boilers/other
iii. Generator/boilers/other type Tribal Office Building: (2) Monitor heaters, Model
441
Community Center: hydronic, Weil McLain Gold Oil
(small household size), Model 2(?)-WGO-4 + 62
gallon DWH heater
Community College/Library: (2) Toyo stoves
iv. Age of generators/boilers/other Boiler 20 + yrs – Others 10 + yrs
v. Efficiency of generators/boilers/other Boiler estimated @ 77% - Monitors and Toyos
estimated over 90%
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
Renewable Energy Fund
RFA AEA 09-004 Application Cost Worksheet Page 2
vi. Efficiency
vii. Future trends
d) Annual heating fuel usage (fill in as applicable)
i. Diesel [gal or MMBtu] 16,000 gallon #1 heating oil @ 134,000 BTU/gal1
(including projections from new facilities scheduled to be
constructed in the coming year)
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 136 cords of wood per year, or
approximately 199 green tons of cordwood
vi. Other
4. Project Cost
a) Total capital cost of new system $775,000
b) Development cost $64,000 (engineering, permitting & project management)
c) Annual O&M cost of new system $21,000
d) Annual fuel cost $38,228
Renewable Energy Fund
RFA AEA 09-004 Application Cost Worksheet Page 3
5. Project Benefits
a) Amount of fuel displaced for
i. Electricity
ii. Heat 13,600 gal. (16,000 x .85) year 1
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 $34,952 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; 1.08:20yr; 1.49:24yr: 1.60:25yr; 2.26:30yr
Payback $839,000/$34,952/year = 24 years