New Research

Energy Consumption and Cost in Office Building (December 2014)
Consumption slightly down, price rise slowed, and cost is decreasing

Xymax Real Estate Institute has been studying the energy consumption and energy cost in office buildings in Japan and releasing the results on regular basis. The report covering January 2010 to September 2014 was released in December last year. This issue is an update report covering up to December 2014.

Findings as of December 2014 (Figure 1)

  • ・Energy Consumption
    17% lower compared to 2010, slightly decreased from the low level started in 2011.
  • ・Energy Price per Unit
    46% higher compared to 2010, the uptrend started in mid-2010 has slightly slowed.
  • ・Energy Cost
    20% higher compared to 2010, slightly decreased after a rise influenced by the changing trends of energy consumption and price per unit.
Figure 1: Energy Consumption, Price per Unit and Cost by 12-month Average
  • ・The figures for each month are not based on the actual amount of a particular single month but are the average for the past 12 months.
  • ・Indexed based on December 2010 = 100
  • ・Energy consumption is converted to mega joule (MJ) (amount of primary energy)
  • ・Consumption and cost are estimated based on per sqm and indexed.
  • ・Relation among the three indexes: Cost = Price per Unit × Consumption
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