JouleX was a software company that specializes in monitoring and control of the power consumption of computers and associated devices attached to networks.

[4][5] The company is headquartered in Atlanta, Georgia, USA, and has offices in Germany, Japan, China and France.

It works with personal computers (including Microsoft Windows, Mac OS X, and Linux derivatives), monitors, servers, network-attached printers, wireless access points, network switches, routers, IP-based HVAC and lighting systems, power distribution units (PDU), and smart meters.

[7][8] JouleX Energy Manager is primarily intended to allow medium-sized and large organizations to reduce their spending on electricity and to bring down their carbon footprint.

A 2009 report estimated that nearly half of all corporate PCs in the US are not regularly switched off at night, costing US businesses around $2.8 billion in electricity and equating to approximately 20 million tons of carbon emissions, roughly the equivalent environmental impact as 4 million cars.