Save money on your electric bill using Powercost Monitor, to monitor your electric costs in real-time!

Powercost Monitor is a device that connects to a residential electrical meter and displays how much electricity the entire house is using. It also displays the cost of the electrical usage in real-time.  Cost is $109.00

As seen on Ask This Old House, episode 607 of Season 5

Available for purchase at http://www.save-electricity.ca/purchase.html

Update: Powercost monitor is now available at http://www.powercostmonitor.com/

PowerCost Monitor - LCD Screen with Backlight