The CTN was founded in 1904 and the installations have been renovated and nowadays the building includes a nursery, a dryer, a regional seeds bank and a laboratory to study seeds, in vitro testing and solid biofuels. In the last few years, a pellet plant has been installed. The plant has a capacity to produce 12.000 t of pellets per year, using raw material such as open cones, pine and oak residues from forest works, or wood stumps from different species. The production is used at the nursery itself and other public facilities from Castilla y León regional government. As a complement there is a biomass boiler of 1.000 kWt, fed by cone pine and wood chips to cover the thermal necessities in CTN processes (cone drying), heat and domestic hot water in the building.