Actually you can save a lot more than just 30%, LEDs are really energy efficient.
Look at the advantages:
* Super Energy Efficient: Save money from your electricity bill
* brighter and cooler light: keep your room temperature low.
* Cost effective, easy to mount
* you can use them with battery, IPS or Generators for a very long period.
* Environment friendly.
You should really use LED products, think about the world, think about the future.