Energy mapping for climate and economy

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ÅF has mapped energy usage for the entire Torslanda works on behalf of Volvo Group Real Estate. In order to produce a relevant picture we didn't just look at the operating systems. The actual production and the people who work in the properties was also taken into account.


Photo: Volvo

 

Open for dialogue

The Torslanda plant is an impressive facility on Hisingen in Göteborg. It is here that Volvo manufactures its passenger vehicles, and it is where the head office, a crash test centre and a upper secondary school – among much else – are located. The land area is four million m². A town inside the town, quite simply.

 

ÅF was commissioned to find saving measures by conducting an energy survey. The commission started with an analysis of the entire plant (some 50 buildings). After that we prioritized six of them – which accounted for about 80% of the energy consumption. The area was 432,000 m2.

 

A number of our client's employees took part in the project: from the environmental manager to operating personnel. The intention was to have an explicitly open dialogue and to allow everyone to be heard. During the course of the work there were therefore several reconciliation meetings at which there were heated discussions.

 

Another important premise was that the energy survey should take the overall picture into account, that is to say, all aspects that affect the energy costs: the properties and their systems, the production process and the people who work there.

 

Great potential for savings

We conducted an analysis of the current situation and presented, with the assistance of a simple, educational Sankey diagram, how much energy was being purchased and how it was used.

 

The largest savings potential was within ventilation and heat recovery from the actual production process. During the course of the work we were even able to carry out simple necessary adjustments that didn't require any investments in equipment. These included turning off the ventilation during the night and stopping pumps.

 

The properties that were included in the commission had a total district heating usage of 16.3 GWh/year. We calculated that it was possible to save 5.5 GWh/year. The total electricity usage amounted to 38.0 GWh/year. Almost 2 GWh a year can be saved in this context.

 

The potential for savings for the Torslanda plant as a whole is massive. The calculations show that reductions of 25% of current heating costs and 5% of current electricity costs are feasible.

 

If all the savings potential is achieved, our client will reduce its environmental impact by the following (per year):

 

  • approx. 240 tonnes carbon dioxide
  • approx. 0.18 tonnes nitrogen oxide
  • approx. 0.03 tonnes sulphur dioxide.

The project is proceeding and we have been entrusted to project manage a large number of the proposed measures.

Tel: +46 10 505 00 00 info@afconsult.com