Country Comparison Costs of Solar Water Heaters
| Costs and payback periods assuming a household electricity savings of 140 kW.h/month due to SWH (using 2010 data) | |||||||
| Country | Currency | System cost | Subsidy(%) | Effective cost | Electricity cost/kW.h | Electricity savings/month | Payback period(y) |
|---|---|---|---|---|---|---|---|
 Australia
|
$Aus | 5000[46] | 40[47] | 3000 | 0.18[48] | 25 | 9.9 |
 Belgium
|
Euro | 4000[49] | 50[50] | 2000 | 0.1[51] | 14 | 11.9 |
 Brazil
|
Real | 2500[52] | 0 | 2500 | 0.25 | 35 | 6.0 |
 South Africa
|
ZA Rand | 14000 | 15[53] | 11900 | 0.9 | 126 | 7.9 |
 United Kingdom
|
UK Pound | 4000[54] | 10[55] | 3600 | 0.11[56] | 15.4 | 19.4 |
 United States
|
US$ | 5000[57] | 30[58] | 3500 | 0.10[57] | 14 |
20.8 |
