Question 2.
Please show all workings out. thank you
1 GWH=1 Million kWH | |||
1 Pound=100 Pence | |||
a. Annual Capital Repayments | |||
Total Capital cost | £270 | M | |
Repayment period | 20 | ||
Interest Rate | 10% | ||
Repayment for £1000 from table | £117.46 | ||
Annual Capital Repayment | £31.71 | M | |
(=117.46*270/1000) | |||
b. Annual O&M Cost | |||
Annual O&M Cost (% of annual capital repayment) | 4% | ||
Total Annual Cost | £1.27 | M | =31.71*4% |
Units generated per year (GWH) | 800 | ||
Units generated per year (kWH) | 800 | M | =800*1000000 |
Unit cost Pence per Kwh | £0.16 | Pence | =1.27/800 *100 Pence |
c. Reduced Unit costs | |||
(1) 20% reduction in capital cost | |||
Total Capital cost | £216 | M | =270*(1-20%) |
Repayment period | 20 | ||
Interest Rate | 10% | ||
Repayment for £1000 from table | £117.46 | ||
Annual Capital Repayment | £25.37 | M | |
(=117.46*216/1000) | |||
Annual O&M Cost (% of annual capital repayment) | 4% | ||
Total Annual Cost | £1.01 | M | =25.37*4% |
Units generated per year (GWH) | 800 | ||
Units generated per year (kWH) | 800 | M | =800*1000000 |
Unit cost Pence per Kwh | £0.13 | Pence | =1.01/800 *100 Pence |
(2) 20% increase in repayment period | |||
Total Capital cost | £270 | M | |
Repayment period | 24 | =20*(1+20%) | |
Interest Rate | 10% | ||
Repayment for £1000 from table | £111.30 | ||
Annual Capital Repayment | £30.05 | M | |
(=111.30*270/1000) | |||
Annual O&M Cost (% of annual capital repayment) | 4% | ||
Total Annual Cost | £1.20 | M | =30.05*4% |
Units generated per year (GWH) | 800 | ||
Units generated per year (kWH) | 800 | M | =800*1000000 |
Unit cost Pence per Kwh | £0.15 | Pence | =1.20/800 *100 Pence |
(3) 20% Reduction in Interest Rate | |||
Total Capital cost | £270 | M | |
Repayment period | 20 | ||
Interest Rate | 8% | =10%*(1-20%) | |
Repayment for £1000 from table | £101.85 | ||
Annual Capital Repayment | £27.50 | M | |
(=101.85*270/1000) | |||
Annual O&M Cost (% of annual capital repayment) | 4% | ||
Total Annual Cost | £1.10 | M | =27.50*4% |
Units generated per year (GWH) | 800 | ||
Units generated per year (kWH) | 800 | M | =800*1000000 |
Unit cost Pence per Kwh | £0.14 | Pence | =1.10/800 *100 Pence |
Question 2. Please show all workings out. thank you A wind farm generating 800 GWh per...
A wind farm generating 800 GWh per year has a total capital cost of £270 million. Assume both items of data are to three significant figures. The capital is to be repaid over a period of 20 years at an interest rate of 10%. Table 1 Annual repayment per £1 000 of capital Repayment period (years) Interest rate 6% 8% 10% 12% £98.95 £112.98 £127.82 £143.39 £92.36 £106.70 £121.93 £137.94 £87.18 £101.85 £117.46 £133.88 £83.05 £98.03 £114.01 £130.81 £79.68 £94.98...