ME SAS’ 2018 Twilight Farm Tours brought engineers, farmers, southern Maine food distributors, Cooperative Extension and college classrooms to four year round vegetable farms that participated in our research and demonstration program. (Photo courtesy: Melissa Winne 2018)

Prototype, low cost sensor arrays help track soil and climate conditions such as DLI, relative humidity, air temp, and soil temp a varying depths – tracking soil temps is critical for radiant heat. (Photo credit: Eliza Bennet)

Higher tech systems tend to help automate utilities such as ventilation, fertility but remain too expensive for most businesses. (Photo: Eliza Bennet)

Radiant root zone heat is good for certain cropping systems. When combined with additional layer of row cover (manual) or heat curtains (automated) heat can be directed to where it is most effective to plants.

A Trombe-styled south wall can be an effective passive solar heat trap and reduce carbon fuel source heating significantly. This image shows a hybrid passive heating/active PV electric solar collector.

Pellet fuel boilers were installed at a demonstration farm with mixed success.

2 Kedel 140,000 Btu boilers were great but servicing and maintenance on the units was not difficult for HVAC professionals, as parts are not accessible and currently too expensive to ship.

These protoype ridge vents cool a house in summer and provide a temperature boost from in winter using only small fans and ground heat.

Exhaust pipes for passive ground heat ducts.

ME SAS Developed a budget and accounting tool for planning and recordkeeping. The tool integrates carbon fuel accounting into your infrastructure performance tracking.