District heating for business

The energy consumption shows how much heat the business uses and it determines how much heat is needed to be produced. The energy price is divided into three seasons because the costs of producing district heating are different over the year. During the summer there is a lot of waste heat available and the price is then lower. During the winter, the total heat demand is greater while there is a shortage of waste heat. The price is then higher than the other seasons. The energy part makes up about 65% of your total district heating cost.

The effect part shows how the heating is used, i.e. how even the effect output is. The output will determine which production readiness is needed. The effect fee consists of a fixed and a variable part. The variable part is based on the average of the three highest daily average values ​​from the most recent rolling 12-month period. The effect part constitutes about 35% of your total district heating cost. An even use of heating will cost less, while an uneven use will cost more.

The efficiency shows how well the plant assimilates the heat that goes into the property and affects how much water is needed to circulate in the system, but also which heat sources we have the opportunity to use. A measure of efficiency is to check the return temperature from the district heating system. The lower the return temperature, the higher the efficiency. The system’s return temperature is during october-april compared each month with the system’s average return temperature, and gives a discount or a fee of 7 kr/MWh, °C. If you get a discount, it means that your return temperature is below the district heating system’s average return temperature. The return temperature component affects the total price by about +/- 5%.

Partille Energi buys all district heating from Göteborg Energi. Approx 70 % of the district heating produced by Göteborg Energi comes from recycled energy from industrial waste heat and waste incineration. Approx. 20 % originates from renewable fuel, like bio fuel and the remaining 10 % is produced by natural gas.

Björndammen’s district heating plant is the only production unit for district heating in Partille municipality. The plant is managed by Göteborg Energi and it is used on rare occasions, when the weather is really cold, when the network is faulty or when there is a problem at some other production unit.

Environmental values for our district heating are accounted for according to a method developed by Värmemarknadskommittén (the Heat Market Committee). The committee consists of representatives from Fastighetsägarna (the property owners’ national organisation), HSB and Riksbyggen (two of the largest cooperative housing associations in Sweden), Hyresgästföreningen (Tenants Association), SABO (Public Housing Sweden), and Energiföretagen Sverige (Swedenergy). The environmental impact of district heating can be seen from three perspectives:

• How the energy is used in terms of efficiency
• The amount of carbon-dioxide emissions through the complete production chain
• The amount of fossil fuels used in each district heating network

More information on the environmental assessment of district heating and the agreement in the Heat Market Committee can be found at Energiföretagen Sverige(Sweden energy).

Link to the environmental values report