Echelon Corp. / Honeywell Advanced Energy Industries Mueller Water Products Inc. / Pike Electric Group Jinpan International Ltd. / General Electric Co. / Duke Energy Corporation / ABB Ltd. / PowerSecure International Inc. / Hubbell Inc. / Company ITC Holdings Corp. / Powell Industries Inc. / Valmont Industries American Superconductor Itron Inc. / Quanta Services Inc. / Eaton Corporation / Roper Industries Inc. / Mastec Inc. / AZZ Inc. / Ocean Power Technologies Inc. / Siemens AG / ESCO Technologies Inc. / EnerNoc Inc. / Digi International Inc. / MYR Group General Cable Corp. / SOKOLOFF & CO. / Progress Energy / /