Our provider is So Cal Edison, who has a fantastic program.  In Los Angeles, LADWP does it as well, and did an evaluation of our last home.  At no cost, they will come to your house and assess the energy efficiency in your home including  appliances such as your AC, heater, refrigerator, dishwasher, etc. and recommend energy saving ideas for you.  In some cases (though not all) you may even qualify for new appliances or other complimentary products such as energy efficient light bulbs or shower heads/faucet aerators.