Bob grows leafy greens at Lef Farms in New Hampshire, where he’s always looking for ways to control costs and make the greenhouse more productive. “New England has high electric prices,” Bob said, “and we want to use every tool at our disposal to control for high production, in an economically feasible way.”

With the lights burning all night to support the leafy greens 24/7 growing program, Bob needed to offset those costs with higher yields. He knew that supplementing the CO2 in the growing environment would increase the efficiency of photosynthesis up to 30%. He considered liquid CO2, but he knew that price would fluctuate with the cost of transportation and storage, so he turned to a source he could control.