Yes, very much so. We built a passive solar greenhouse using a standard, off-the-shelf, hard wall style greenhouse. We started growing in the dead of winter, and we were able to successfully maintain temperatures above 0°C by storing all the heat into the soil using heat pumps and geothermal under the soil as a heat source and sink. We were able to, weekly, grow salad greens in there throughout the winter.
Going forward, this is really where, especially in Canada in our cold climate, we need to focus some of our innovation and technology. We grow crops year-round that we otherwise aren't growing now. We can be less dependent on imports with very basic, simple technology and greenhouse systems that already exist. Applying other technologies like geothermal and HVAC systems from other industries and coupling them with greenhouses, we can grow year-round and have that viability.