Energy Savings Calculator
Enter your own values in the boxes or use our default values. When you're ready to see how much you are saving click the "Calculate" button. Try changing the number of CFLs to see how much more you'd save by replacing your old incandescent bulbs.
Annual and Life Cycle Costs and Savings for 3 CFL(s)
| 3 ENERGY STAR Qualified Units |
3 Conventional Units | Savings with ENERGY STAR |
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Annual Operating Costs |
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| Energy cost | $0 | $0 | $0 | |
| Maintenance cost | $0 | $0 | $0 | |
Total |
$0 | $0 | $0 | |
Life Cycle Costs |
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Operating Cost (energy and maintenance) |
$0 | $0 | $0 | |
| Energy costs (lifetime)* | $0 | $0 | $0 | |
| Maintenance cost (lifetime) | $0 | $0 | $0 | |
| Purchase price for 3 unit(s) | $10.5 | $1.5 | $-9 | |
Total |
$11 | $2 | $-9 |
Summary of Benefits for 3 CFL(s)
| Initial cost difference | $9 |
| Life cycle savings | $0 |
| Net life cycle savings (life cycle savings - additional cost) |
$-9 |
| Simple payback of additional cost (years) | 0 |
| Life cycle energy saved (kWh) | 0 |
| Life cycle air pollution reduction (lbs of CO2) | 0 |
| Air pollution reduction equivalence (number of cars removed from the road for a year) |
0 |
| Air pollution reduction equivalence (acres of forest); | 0 |
| Savings as a percent of retail price | -186% |
Annual costs exclude initial purchase price. All costs, except initial cost, are discounted over the products' lifetime using a 4% discount rate. All assumptions provided by ENERGYSTAR.gov http://www.energystar.gov/index.cfm?c=cfls.pr_cfls