Energy management could end up being the killer app for the slow-moving home automation market. Here’s the latest: iControl, a 5-year-old start-up backed by some of the biggest names in venture capital and networking announced this morning that it has launched an energy management product for utilities, broadband service providers and security firms. Out of the gate the company expects its customers to provide consumers a smart thermostat and a gateway for around $70. They expect broadband service providers to offer the energy management service to their customers for free, potentially bundled with a security system, and energy will act as a differentiator or value-add service, instead of a major revenue driver.