Recipes for Systemic Change - Helsinki Design Lab

their primary fuel; this is especially prevalent in Helsinki and other coastalcities. Inland CHP plants tend to be powered by peat, but efforts are beingmade to transition to wood fuel and other forest industry by-products.PJ250200150OtherOilWood FuelsPeatNatural Gas10050Recovered Fuel& Waste HeatCoal0| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |SourceMinistry ofthe EnvironmentandStatisticsFinlandFuels Used in District Heating & CHP 1970-2007D2.3 Energy EfficiencyBuilding age is the greatest determinate of the energy efficiency of Finland'sbuilding stock. In general, buildings constructed during the rapidurbanization of the 1950's, 60's and early 70's are the least efficient buildingsof any decade either before or after. In fact, apartment buildings built at theturn of the 20th century and during the 1940's are, as a class, the most efficientin the country. Those built during the 1970's energy crisis are amongthe least efficient.Delivered District Heat to Apartment Buildingsby DecadeDelivered District Heat to Non-residentialBuildings by DecadeMilj./m³161412108Milj./m³161412108kWh/m³< 3030-4040-5050-60> 606644220| | | | | | | | | | | |0| | | | | | | | | |-19001900191019201930194019501960197019801990200019101920193019401950196019701980199020001970197219741976197819801982198419861988199019921994199619982000200220042006SourceSitra's EnergyProgrammeDelivered District Heat Energy by Decade of Construction229