CFL Math
| Type | Incandescent | Planet Bulb CFL |
| Bulb | 100 Watt | 23 Watt |
| Cost | $0.75 | $3.99 |
| Life | 6 Months | 7 Years |
| Cost a Year | $1.50 | $0.57 |
| Cost Over 7 Years | $10.50 | $3.99 |
| Annual Energy Savings | $0 | $30 |
| Total Annual Savings (By Changing to 10 CFLs) | $0 | $39.30 |
CFL last on average 10 times longer than incandescent bulbs and save 75% on energy costs.