Table 2.
Cost savings offered by electric refrigerators over solar devices under varying conditions without electrical outages.
| Value (range) | Annual storage cost savings (USD) | |
|---|---|---|
| Baseline | – | $711,351 |
| Sensitivity analyses | ||
| Purchase price of solar devices, as % of current pricea | 100% (50–200%) | $361,502–$1,411,049 |
| Useful lifetime of solar devices, years [3,6] | 10 (5–20) | $361,502–$1,411,049 |
| Maintenance costs of solar devices (annual), as % of purchase pricea [14] | 5% (2.5–10%) | $538,113–$1,057,826 |
| Purchase price of electric devicesa | 100% (50–200%) | $791,263–$551,528 |
| Useful lifetime of electric devices [3,6] | 10 (5–20) | $551,528–$791,263 |
| Electricity costs, per kWh | $0.10 ($0.05–0.20) | $760,581–$612,890 |
| Maintenance costs of electric devices (annual)a [14] | 5% (2.5–10%) | $749,620–$634,813 |
a
Table 1 lists the purchase price of each device.