Q3 Table Q3 shows data for two wind turbines with the same rated output, one on an inland site and the other offshore; average capacity factors have been estimated by the installation team. Table Q3 Turbine location rated output (MW) average capacity factor capital cost per kW of rated output 850 1100 estimated Annual lifetime in O&M costs years per kW of rated output 25 3.00 20 4.00 Inland Offshore 1.2 1.2 28% 40% (a) Calculate the average annual output, in MWh per year, for each turbine. (3 marks) (7 marks) (b) The capital cost is to be repaid over the estimated lifetime, at a discount rate of 10%. Find the annual capital repayment for each turbine and then add the annual operating and maintenance (O&M) costs to give the total annual cost for each turbine. For the annual repayments of capital cost, use discounted cash flow method. (3 marks) (c) Use your answers to parts (a) and (b) to find the cost in pence per kWh for each turbine. Comment briefly on the results in the terms of the estimates. A 6 MW offshore wind farm has a capacity factor of 40%, and (7 marks) service lifetime of 30 years. The capital cost of farm is 1.5 million per MW, and the maintenance and operating costs are 500 000 per year. Calculate the cost of each MWh of itibil ianarin numd 205 dar (a) Calculate the average annual output, in MWh per year, for each turbine. (3 marks) (b) The capital cost is to be repaid over the estimated lifetime, at a discount rate of 10%. Find the annual capital repayment for each turbine and then add the annual operating and maintenance (O&M) costs to give the total annual cost for each turbine. For the annual repayments of capital cost, use discounted cash flow method. (7 marks) (c) (3 marks) Use your answers to parts (a) and (b) to find the cost in pence per kWh for each turbine. Comment briefly on the results in the terms of the estimates. A 6 MW offshore wind farm has a capacity factor of 40%, and (7 marks) service lifetime of 30 years. The capital cost of farm is 1.5 million per MW, and the maintenance and operating costs are 500 000 per year. Calculate the cost of each MWh of electricity while ignoring discount rate. Note: Assume 365 days per year. We assume plant generates electricity at a price of 6p kWh-?. Total (20 marks) Q3 Table Q3 shows data for two wind turbines with the same rated output, one on an inland site and the other offshore; average capacity factors have been estimated by the installation team. Table Q3 Turbine location rated output (MW) average capacity factor capital cost per kW of rated output 850 1100 estimated Annual lifetime in O&M costs years per kW of rated output 25 3.00 20 4.00 Inland Offshore 1.2 1.2 28% 40% (a) Calculate the average annual output, in MWh per year, for each turbine. (3 marks) (7 marks) (b) The capital cost is to be repaid over the estimated lifetime, at a discount rate of 10%. Find the annual capital repayment for each turbine and then add the annual operating and maintenance (O&M) costs to give the total annual cost for each turbine. For the annual repayments of capital cost, use discounted cash flow method. (3 marks) (c) Use your answers to parts (a) and (b) to find the cost in pence per kWh for each turbine. Comment briefly on the results in the terms of the estimates. A 6 MW offshore wind farm has a capacity factor of 40%, and (7 marks) service lifetime of 30 years. The capital cost of farm is 1.5 million per MW, and the maintenance and operating costs are 500 000 per year. Calculate the cost of each MWh of itibil ianarin numd 205 dar (a) Calculate the average annual output, in MWh per year, for each turbine. (3 marks) (b) The capital cost is to be repaid over the estimated lifetime, at a discount rate of 10%. Find the annual capital repayment for each turbine and then add the annual operating and maintenance (O&M) costs to give the total annual cost for each turbine. For the annual repayments of capital cost, use discounted cash flow method. (7 marks) (c) (3 marks) Use your answers to parts (a) and (b) to find the cost in pence per kWh for each turbine. Comment briefly on the results in the terms of the estimates. A 6 MW offshore wind farm has a capacity factor of 40%, and (7 marks) service lifetime of 30 years. The capital cost of farm is 1.5 million per MW, and the maintenance and operating costs are 500 000 per year. Calculate the cost of each MWh of electricity while ignoring discount rate. Note: Assume 365 days per year. We assume plant generates electricity at a price of 6p kWh-?. Total (20 marks)
