In a first for North America, GE technology is now being used at a commercial greenhouse to generate more reliable onsite power and heat — and to reduce emissions. The GE-designed “cogeneration” power plant — which increases efficiency by combining heat and power generation — had its grand opening today at Great Northern Hydroponics’ sprawling, 55-acre tomato greenhouse complex in Kingsville, Ontario, about 30 miles east of Detroit. The power plant, which uses four of GE’s Jenbacher engines, also treats the engines’ exhaust by recycling CO2 and applying it as a special fertilizer to enhance greenhouse crop production.