To save your electricity bill from lighting , the follows are constructive and feasible:
1. Use LED MR16 or GU10 to replace halogen MR16
http://led-online.cn/blog/index.php/archives/41
2. Use LED E27 or LED tube to replace fluorescent tube or CFL
http://led-online.cn/blog/index.php/archives/53
3. Calculate how much you save by using LED MR16 to replace halogen MR16
