Seattle-based NetMotion Wireless, which develops security products for wireless, said today that it services 18 major utilities.

The new customers include electric, natural gas, water and sewer utilities with deployments as large as 4,000 mobile devices. Among them are Arizona Public Service, Atlanta Gas & Light, Con Edison, Dominion Resources, Jacksonville Electric Authority, Kansas City Power & Light, Pentair Water, Philadelphia Gas Works, Puget Sound Energy, Sacramento Water and Sewer District, Terasen Gas, Truckee Meadows Water and Western Gas Resources.

"We nearly doubled NetMotion's revenue and seat count over the past year," said Andy Willett, NetMotion's senior vice president of sales. "Our success with utilities customers has been a big part of that growth and this is just one of the markets from which we expect continued success throughout 2006."

In March, a jury in the U.S. District Court of Delaware found NetMotion's product infringed on specific patent claims of two patents held by a company called Padcom. The company said it was developing a new version of its product that would not infringe on these patents.