Costs and Funding Sources
SOURCES of FUNDS
| Money Provided by School | $1931 |
| Sale of Green Tags | $2000 |
| Kansas Energy Office Support | $1000 |
| Money or Services Donated Foundation parts & labor, steel pipe |
Cost of materials: $1446 + wire, conduit, boxes, Labor |
PROJECT PARTS LIST (Local utility and/or local business contribution)
Listed below are some additional items that will need to be purchased in order to completely install a SkyStream 3.7 turbine. All the wire and conduit prices will vary depending on how far it is from your turbine to the school connection. These items will hopefully be donated by local businesses or utilities. Note: You will not need ALL of the items listed below. Items will be dependent upon the choice of a 240V or 120V connection.
| Qty. | Material | Cost |
|---|---|---|
| 2 | Copper Grounding Rods (3/4") | $30 each |
| 1 | Tower base fused disconnect box | $118 |
| 1 | School disconnect box | $118 |
| 3 | AWG 10 turbine electrical wire (80ft) | |
| 300ft | 120V Turbine Wire (Nacelle to tower disconnect) | $214.50 |
| 300ft | 240V Turbine Wire (Nacelle to tower disconnect) | $296.70 |
| Varies | Steel Electrical conduit | $11.20 per 10ft length |
| Varies | PVC Schedule 40 Electrical conduit | $6.53 per 10ft length |
| Varies | Steel exterior grade electrical conduit | Varies |
| Varies | Turbine interconnection electrical wire (from tower disconnect to school) * | Varies |
*See Wiring Prices table below.
Below is a table listing approximate wire prices. The prices will vary depending on how far it is from the turbine to the school. The price also changes when using 240V versus 120V. The price does reflect the use of a contractor and a 30% markup.
| Voltage | Lengths | Total Cost |
|---|---|---|
| 120V | 50ft to 500ft | $14 - $1000 |
| 240V | 50ft to 1000ft | $20 - $3000 |
TURBINE COSTS (School plus green tag contribution)
The cost of the SkyStream 3.7 is described below. Included is the retail price of the turbine as well as the cost NREL has been given from the SkyStream manufacturers.
| Retail Cost** | $6000.00 (estimate) |
| Non-profit, Schools Discounted Cost | $3727.00 |
** This is an estimated price. The actual price will vary from dealer to dealer.
TOWER AND FOUNDATION COSTS (School and/or community support contribution)
There are a couple of options regarding the style of tower for use with the SkyStream 3.7 turbine. Below is the estimated cost of each type of tower and foundation. All the prices for materials are subject to change due to the market. This is just an estimate for your use.
| Qty. | Material | Cost |
|---|---|---|
Tower |
||
| 1 | Tower Kit (Skystream) | $1032.00 |
| 1 | Tower Adaptor (Skystream) | $122.00 |
| 1 | Lightning Protection Kit | $50.00 |
| 2 | 3/4"x 12" Eyebolt | $5.00 |
| 2 | 3/4"x 8" Eyebolt | $5.00 |
| - | 5" Sch40 Steel Pipe | $956.00 (est.) |
Total Tower Cost |
$2200.00 |
|
Foundation |
||
| - | Concrete** | $550.00 |
| 177.5 ft | Rebar #3 | $0.18/ft |
| 137.5 ft | Rebar #4 | $0.28/ft |
| 20 ft | Rebar #6 | $0.63/ft |
Total Foundation Cost |
$633.00 |
|
Totals |
||
Grand Total for Guyed Tower |
$2650.00 |
|
| Qty. | Material | Cost |
|---|---|---|
Table |
||
| 1 | 60-ft Monopole Tower | $8411.00 |
| 1 | Lightning Protection Kit | $50.00 |
Total Monopole Cost |
$8461.00 |
|
Foundation |
||
| 6.00 | Concrete(cubic yards) | $523.60 |
| 198.80 | Rebar #4(ft) | $53.08 |
| 115.00 | Rebar #8(ft) | $123.05 |
| 1 | Foundation Bolt Kit | $363.00 |
Total Foundation Cost |
$1062.73 |
|
Totals |
||
Grand Total for Monopole |
$9523.73 |
|
| Qty. | Material | Cost |
|---|---|---|
Tower |
||
| 1 | 45-ft Monopole Tower | $3214.00 |
| 1 | Lightning Protection Kit | $50.00 |
| 1 | Gin Pole Kit (dealer purch.) | - |
Total Monopole Cost |
$3264.00 |
|
Foundation |
||
| 6.00 | Concrete(cubic yards) | $479.97 |
| 182.23 | Rebar #4(ft) | $48.66 |
| 105.00 | Rebar #8(ft) | $112.35 |
| 1 | Hinge Plate Kit | $327.00 |
| 1 | Foundation Bolt Kit | $363.00 |
Total Foundation Cost |
$1330.97 |
|
Totals |
||
Grand Total for Monopole |
$5071.97 |
|
| Qty. | Material | Cost |
|---|---|---|
Tower |
||
| 1 | Monopole Tower | $2978.00 |
| 1 | Lightning Protection Kit | $50.00 |
| 1 | Gin Pole Kit (dealer purch.) | $419.00 |
Total Monopole Cost |
$3028.00 |
|
Foundation |
||
| 12.00 | Concrete(cubic yards) | $960.00 |
| 0.00 | Rebar #4(ft) | - |
| 216.00 | Rebar #6(ft) | $129.60 |
| 0.00 | Rebar #7(ft) | - |
| 1 | Hinge Plate Kit | $203.00 |
| 1 | Foundation Bolt Kit | $363.00 |
Total Foundadtion Cost |
$1655.60 |
|
Totals |
||
Grand Total for Monopole |
$4673.60 |
|
| Item | Cost when design
wind speed <110 |
Cost when design
wind speed <150 |
|---|---|---|
| Tower | $3776.00 | $3776.00 |
| SMarT Foundation Kit | $635.00 | $635.00 |
| Concrete | $285.79 | $425.31 |
| Gin Pole (n/a requires crane) | - | - |
| Hinge Plate Kit (n/a requires crane) | - | - |
Grand Total |
$4696.79 |
$4836.31 |
ADDITIONAL EQUIPMENT COSTS (Local utility and/or local business contribution)
There may be some additional costs to install the turbine initially. This includes rental of trenching and digging equipment and also the use of a licensed electrician. As with other prices this is just an estimate.
| Trencher | $150/day |
| Electrician | $30/hour |