Jersey City, New Jersey is now the home to Petra Solar’s newest utility-scale solar farm. Petra Solar is using utility poles all across Jersey City and other urban and suburban areas of New Jersey. Five-foot by two-and-a-half foot solar panels are attached to the utility poles about 15 feet above the ground, tilted south towards the sun.Each panel generates about 225 watts of power, adding to generation capacity and helping utilities meet renewable-power requirements. Petra Solar is a privately held clean-energy technology firm based in South Plainfield, N.J.Petra Solar Chief executive Shihab Kuran stated, "It allows you to deploy quickly and cost effectively because you don't have to invest in land, you're not building substations or transformers."Petra Solar is under contract with Public Service Enterprise Group Inc. (NYSE:PEG), and is about halfway through their $200 million commitment of providing 40 megawatts of solar power in six cities, spanning 300 rural and suburban communities. Petra has put up 95,000 panels, producing 20 megawatts, enough power for 3,250 homes.The energy company says it takes roughly 30 minutes to install one panel on the utility pole. The panels feed electricity directly into the power lines.