Club Audit, Norway

An energy consultant in Norway subcontracted by EE MUSIC undertook an energy audit of a music venue in Oslo in 2015. This case study is presented anonymously to allow greater sharing of data. 

Key Data:

Area: 780 m2 (and a 198 m2 new extension)

Annual attendance: 60,000 attendees for 250 events a year, and around 100,000 attendees to the bar.

Type of building: old building (1900-1910) in Oslo; with a new extension currently being finished (which is not yet used or heated, and has therefore not been included in the energy use analysis). The performance space has a capacity of 500.

Type of energy: electricity only

Annual electricity consumption (weather normalised):

  • 2010: 97,454 kWh
  • 2011: 97,484 kWh
  • 2012: 109,022 kWh
  • No more recent data was available

Key best practice found:

  • Previous energy audit undertaken in 2013
  • Some previous efficiency measures undertaken, including: replacing all lightbulbs with LED bulbs; duct cleaning; filter replacement; installation of a heating coil on the general ventilation systems (indoor climate regulation).

Key inefficiencies found:

  • Leaking electric boiler from 1982
  • No energy monitoring system
  • Very old ventilation system in the stage area/concert hall (32 years old)
  • Unfavourable extractor placement above the stage makes it impossible to simultaneously run the ventilation system with smoke effects on stage as the smoke is immediately extracted out.
  • Current technician’s room (containing boiler and ventilation system) is located under the stage, making access and maintenance difficult.
  • No registered energy label, which is mandatory under the Energy Label Regulations.

Key data highlights:

  • Degree-day energy consumption in 2010-2012 was 130 kWh / m2 / year
  • This is lower than the Norwegian benchmark for cultural venues published in “Enova’s building statistics 2011” , which is 196 kWh / m2 / year. The venue’s lower energy use is not due to greater energy efficiency, but due to limited operation of the venue’s ventilation system, especially in the stage area/concert hall.

Key recommendations:

  • Replacing the leaking electric boiler is a critical measure that should be undertaken as soon as possible for safety considerations as it is a fire hazard
  • New ventilation for the stage area/concert hall to improve air quality
  • Placing the new ventilation system and boiler in a technician’s room on the roof, to allow better access, maintenance, and efficiency.
  • Installing a simple BMS-connection in conjunction with the previous two measures to allow better control and regulation.
  • Insulating the ceilings in connection with a currently planned renovation of the roof (due to age and leaks). This would lead to an estimated annual energy saving of 1500 kWh.
  • Switching to LED stage lighting. Replacing the current 40 PAR64s (each with an output of ca. 1000 Watts) with 40 LED PARCANs (each with an output of ca.108 Watts) would lead to an estimated annual energy saving of 10,500 kWh.
  • Implementing a system for monthly or quarterly energy monitoring of the 3 main electricity meters and the 5 meters in the apartments also housed on site. Statistically, this kind of intervention leads to 3% annual energy savings, which would be approximately 3000 kWh. 

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