Alavere municipal boiler house in Estonia, 350 kW
Different municipals are looking for more cost efficient ways to heat their buildings. These buildings are usually kindergartens, parish councils and other social buildings, that are responsibility of local municipals. Oil was quite cheap during soviet times and oil boiler houses were very popular in Estonia. It means that also nowadays still a lot of municipalities heat with oil because they have the equipment. But every year more and more municipalities invest in renovation of the boiler house and change to pellets heating.
While being a renewable source of energy, pellet prices are also lower then heating oil. Pellet boiler houses are fully automated and easy to maintain.
Alavere boiler house has Viessmann Vitoplex 200 boiler with nominal power of 400kW. The boiler is powered by PV350a burner. The length of the heating pipeline runs for about 1 km between the buildings. So it is not a long grid. The burner automatically raises and lowers its power level according to the usage of hot water in the system. This varies the most during peak hours when people wake up in the morning and the outside temperature is usually the coldest.
There is a 14 cubic meter silo for pellets which is refilled by a pellet truck with a pneumatic filling system.