This week (April 1 – April 7, 2012): 69,338 Gigawatt-hours
Change from this week last year: down 1.5%
This year (total of previous 52 weeks): 4,049,476 Gigawatt-hours
A Terawatt (1,000 Gigawatts) measures how much electricity is used at any single moment.
A Terawatt-hour (TWh) measures how much electricity was used over time.
Weekly Electric Output is compiled from data collected through an online web data entry page from most of the country’s major, investor-owned utilities, municipalities, and Federal power agencies, accounting for roughly 75-80% of total electricity output. A multiplier is used to account for the other 3,000 small utilities that cannot be surveyed weekly.