I picked up a home energy monitor from amazon that is marked down about 80% from retail, $25 delivered: http://www.amazon.com/Black-Decker-EM100B-Energy-Monitor/dp/B001ELJKLE/ref=pd_ybh_9?pf_rd_p=280800601&pf_rd_s=center-2&pf_rd_t=1501&pf_rd_i=ybh&pf_rd_m=ATVPDKIKX0DER&pf_rd_r=0P0NVH767F15E2CCG41R Basically a similar interface to Kill-a-Watt meter but hooks up to your power meter to read/integrate your whole house usage. There was a discussion here about home energy monitors last year, but we all seemed to agree that they were a bit too expensive for what they were: ~$150 for a simple wireless power meter for your whole house, $250+ for a multichannel logger linked to a webpage, etc. I just installed the meter. Seems to work as advertised, and I expect it will be helpful to read out power usage by major appliances that are hardwired--my AC compressor uses 2.5 kW, and the blower unit uses 0.5 kW. Cool. Both Google and Microsoft were fielding meters and associated web services, but I guess these were not big sellers and both companies announced they were pulling the plug last month. The result: you can now get meters marked down to 'salvage' rates, but the web-logging features will not work after 2012 (unless third party solns come online by then).