There are myriad (yes, I said myriad!) ways to use Smart Energy to save money.
Rebate Incentives
Your utility company might be sponsoring a rebate program, where you can buy a new energy-efficient appliance to replace an older, not-so-efficient appliance. The appliance upgrade costs less, you save money right now. The new appliance uses less energy, you save even more money over time.
Here is more information about utility company rebates.
Alternative Energy
OMG, there are more ways to get useful energy than you can shake a stick at!
Here is more information about Alternative Energy Sources.
Efficient Energy Use
Efficient energy use is smart energy use. If you use less energy to do the same things, you save money (because it costs money to bring focused energy to your house, remember?)