sectoral economic costs and benefits of ghg mitigation - IPCC

Oliver Headley
Table 4
Yearly Cost in US Dollars of Hot Water for a Family of Four Using 4000 kWh and for a 200 Room Hotel Using 137,000 kWh
Territory Using Electricity Using Liquefied Petroleum Gas (LPG)
Energy Cost Payback Time, Years Energy Cost of Heat Payback Time, Years
Per kWh Family Hotel Family Hotel Per kWh Family Hotel Family Hotel
Anguilla 0.18 720 24,660 2.50 1.62 0.117 468 16029 3.84 2.50
Antigua 0.26 1040 36,620 1.73 1.09 n/a n/a n/a n/a n/a
Barbados 0.157 628 21,509 2.86 1.86 0.097 387 13,263 4.65 3.02
Brit. Virgin. Is 0.190 760 20,030 2.37 2.00 0.114 456 15,618 3.95 2.56
Dominica 0.230 920 31,510 1.96 1.27 n/a n/a n/a n/a n/a
Grenada 0.220 880 30,140 2.05 1.33 0.084 336 11,508 5.36 3.48
Montserrat 0.160 640 21,920 2.81 1.83 n/a n/a n/a n/a n/a
St Kitts & Nevis 0.152 608 20,824 2.96 1.92 0.077 308 10,549 5.84 3.79
St Lucia 0.144 576 19,728 3.13 2.03 0.10 400 13,700 4.50 2.92
St Vincent 0.245 980 33,565 1.84 1.19 0.083 332 11,371 5.42 3.52
St Maarten n/a n/a n/a n/a n/a 0.109 436 14,933 4.13 2.68
The table assumes the following:
• Each family uses 4000 kWh/y for heating water.
• Each hotel guest uses 76 litres of hot water per day.
• Hotel occupancy is 80% during the high season which lasts 120 days.
• Hotel occupancy is 40% during the low season which lasts 245 days.
• Water is heated from 25°C to 65°C.
• Electrical line losses have been ignored.
• The capital cost of a household solar water heater is assumed to be US $1800.
• The capital cost of a hotel solar water heater is assumed to be US $40,000.
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