Echelon Corp. / Itron Inc. / Pike Electric Group Jinpan International Ltd. / ITC Holdings Corp. / General Electric Co. / Duke Energy Corporation / Valmont Industries 21 Quanta Services Inc. / PowerSecure International Inc. / Previous Rank Company 26 Ocean Power Technologies Inc. / Honeywell 11 Mueller Water Products Inc. / Hubbell Inc. / American Superconductor 12 ABB Ltd. / Powell Industries Inc. / Advanced Energy Industries / Eaton Corporation / Roper Industries Inc. / Mastec Inc. / AZZ Inc. / Siemens AG / ESCO Technologies Inc. / EnerNoc Inc. / Digi International Inc. / MYR Group General Cable Corp. / SOKOLOFF & CO. / Progress Energy / /