Prince George District Energy System Timeline
Map of buildings connected to the Prince George District Energy System
Prince George District Energy System Equipment
Discussing the Capacity of the Back-up Generator and 2 Boilers with Kristy, City of PG (right).
Touring the Red Rock Nursery biomass greenhouse heating system with tour guide, Olivier.
Greenhouse heating system fibre supply stockpiles.
Hog fuel at the nursery includes woodchips, pine cones, and locally-grown willow stems.
The core business of the Red Rock Nursery is to grow reforestation spruce and pine seedlings.
White spruce (Picea glauca) seedlings.
Fast-growing willow species are being grown at the Nursery to provide a fibre supply to the biomass heating system. Rotations are 3 years, and they are harvested in the fall with equipment similar to that used for sugarcane harvesting.
Two-yr old poplars. The Nursery has planted 29 different tree species to test which would grow best in the local sandy soils. To-date, a species of willow purchased from New York State University is proving to top the charts.
"Soft ducting" and insulated piping allows the nursery to be heated enough to start growing seedlings in January that will be ready to plant by late May.
Greenhouse biomass burner.
Fuel is fed into the burner using this "walking floor" to push the fibre towards the conveyer belt.
Northern Bioponics greenhouse heated with a biomass burner and solar panels.
Northern Bioponics owners Uta and Matthias describe how their greenhouse and aquaculture systems are integrated.
Tilapia aquaculture system rearing tank.
Three-yr old Tilapia, ready for harvest.
Seedlings are grown in a substrate of moist clay balls, then transfered into the aquaponics tables where the roots grow in water with little or no soil.
Aquaponics water tables.
David describes the operations of the wood pellet burner that heats the UNBC greenhouse and laboratory.