System Costs
The estimated system costs include:
· Annual rent of the land,
· The initial purchase of equipment and installation,
· Annual operations and maintenance, &
· Replacement of equipment during the duration of the project.
A summery of the projects system costs can be reviewed in the table below:
System Costs
|
Price |
Justification / Assumptions |
Reference |
Land: |
|
|
|
Annual rent |
£5,698.00 per MW installed |
|
[1] |
Wind turbines - 2MW Vesta V80: |
|
|
|
Capital cost |
£2,236,580.00 per turbine |
1.2 million euros per MW |
Vesta quote by email |
Replacement cost |
£1,118,290.00 per turbine |
50% of original cost |
Team assumption |
Annual O&M |
£33,548.70 per turbine |
1.5% of capital cost |
Sgurr Energy |
Lifetime |
20 years |
|
Sgurr Energy |
Wind turbines - 2.5 Nordex N80: |
|
|
|
Capital cost |
£2,822,222.00 per turbine |
25.4 million dollars per 9 2.5MW turbines |
[2] |
Replacement cost |
£1,411,111.00 per turbine |
50% of original cost |
Team assumption |
Annual O&M |
£42,333.33 per turbine |
1.5% of capital cost |
Sgurr Energy |
Lifetime |
20 years |
|
Sgurr Energy |
Converter: |
|
|
|
Capital cost |
£1,005.06 per kW |
ref is inverter only so multiplied by 2. |
[3] |
Replacement cost |
£904.55 per kW |
90% of original cost |
Team assumption |
Annual O&M |
£10.05 per kW |
1.5% of capital cost |
Team assumption |
Lifetime |
20 years |
|
Team assumption |
Electrolyser: |
|
|
|
Capital cost |
£2,329.77 per kW |
|
Sgurr Energy |
Replacement cost |
£2,096.79 per kW |
90% of original cost |
Team assumption |
Annual O&M |
£46.60 per kW |
2% of capital cost |
Sgurr Energy |
Lifetime |
20 years |
|
Sgurr Energy |
Hydrogen tank (stored @ 350bar): |
|
|
|
Capital cost |
£1,397.86 per kg |
|
Sgurr Energy |
Replacement cost |
£1,258.07 per kg |
90% of original cost |
Team assumption |
Annual O&M |
£34.95 per kg |
2.5% of capital cost |
Sgurr Energy |
Lifetime |
25 years |
|
Sgurr Energy |
Fuel cell: |
|
|
|
Capital cost |
£2,329.77 per kW |
|
Sgurr Energy |
Replacement cost |
£2,213.28 per kW |
95% of original cost |
Team assumption |
Annual O&M |
£0.001165 per hour |
2% of capital cost |
Sgurr Energy |
Lifetime |
40000 operating hours |
for stationary use |
[4] |
Compressor: |
|
|
|
Capital cost |
£706.36 per horse power |
|
[5] |
Replacement cost |
£635.72 per horse power |
90% of original cost |
Team assumption |
Annual O&M |
£10.60 per horse power |
1.5% of capital cost |
Team assumption |
Lifetime |
25 years |
|
Team assumption |
Table Comments
Replacement costs:
· It has been estimated that all of the components will become cheaper with time, as the technology becomes more common in the market. As all of the components; except the fuel cell; last in excess of 20 years, a conservative estimate of 90% - 95% of the original value has been assumed.
· One exception is the replacement cost of the wind turbines. The replacement cost is assumed to be only half that of the original value, because it is highly unlikely that the turbine tower or foundations would have to be rebuilt, purely replacement of the nacelle or turbine blades.
Operations & Maintenance:
· The values assigned to the annual operations and maintenance (O&M) costs have been estimated, with assistance from Sgurr Energy.
Conversion Rates
The conversion rates used in the pricing of the project are those of 30th of March 2008 and these were as follows:
· Dollars to Pounds: 0.706364343
· Euros to Pounds: 0.931906477
References:
[1] http://www.jmt.org/responses-planning-representation-on-lewis-wind-farm.asp
[2] http://www.renewableenergyworld.com/rea/news/article/2006/09/nordex-to-supply-multi-mw-wind-turbines-to-ireland-45936
[3] http://store.oynot.com/sb70suboygrt.html
[4] http://www.buchmann.ca/Article1-Page1.asp
[5] http://www.ramgen.com/apps_overview.html
