Ann: Quarterly Activities Report, page-3

The gas powered heat pumps are an option as an alternative to solar powered pumps I believe?
solar is not available 24/7 all year round in many climates so a backup power source is important to potential buyers especially to remove the issue of power supply faults as the loss of a growers product (plants) due to sudden root temp change would prove fatal. An important piece of the chain.
You aren't a holder stag11?