Ah, a true geeky group after our own heart: the DistribuTech conference, which brings together thousands of companies that are using software, wireless networks and digital gadgets to monitor and manage energy consumption, kicks off on Wednesday in San Diego, Calif. Dozens of companies that we’ve covered over the past year, including Onzo, Tendril and Trilliant, will be showing off new gear, new software upgrades, and making announcements about their progress with utility partners.