Interesting item here from the American Council for an Energy-Efficient Economy (ACEEE). They say "federal energy efficiency provisions included in H.R. 2454, the American Clean Energy and Security Act, could save approximately $750 per household by 2020 and $3,900 per household by 2030." You can read the whole analysis here http://aceee.org/energy/national/HR2454_Estimate06-01.pdf
Also, the savings don't seem to be "fake." As far as I can tell, ACEEE has not factored in your additional costs from the extra money you will pay for carbon cap and trade -- should that be enacted -- as part of your "savings." So they do not seem to be claiming that reductions in what you would otherwise pay in carbon taxes are part of the savings they calculate.