EPC pilot project © UNWE
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Project Stakeholder

University of National and World Economy

Students’ dormitory blocks at Sofia University – Bulgaria

Facility and Initial Situation

Facility

  • Four buildings with 32,736 m² net floor area – dormitories blocks: No 9, No 26, No38 and No 40A
  • The buildings were built between 1969 – 1976, in the system large-panel construction and consisting of two bodies: main building and low body.

Initial Situation

The annual consumption of electrical energy before energy efficiency measures was

  • Electrical energy:
    Bl. No 9 – 282,582 kWh
    Bl. No 26 – 330,432 kWh
    Bl. No 38 – 370,866 kWh
    Bl. No 40 А – 265,950 kWh
  • Heating:
    Bl. No 9 – 1,074,526 kWh
    Bl. No 26 – 1,099,329 kWh
    Bl. No 38 – 1,088,406 kWh
    Bl. No 40 А – 876,429 kWh
  • Energy for domestic hot water:
    Bl. No 9- 939,813 kWh
    Bl. No 26 – 1,091,462kWh
    Bl. No 38 – 1,021,817kWh
    Bl. No 40 А – 955,770kWh

Goals and Measures

Goals of building owner

  • Reduction of electrical power
  • Reduction of heating power
  • Generation of energy from sun
  • Reduction of CO2 emissions

Measures

  • Thermal insulation of external walls, the roof and the floor
  • Replacement of windows frames
  • Solar collectors
  • Improvement of heating system

Facts

Installation of energy efficiency measures

2013-2016

Duration of the contract

5 years

Total Investment

1,184,964 €

Energy costs (Baseline)

497,440 €

Guaranteed savings in Euro

170,630 €/a

Guaranteed savings in %

heat: 69.1 %
electricity: 8.8%

Reduction of CO2 emissions

455,51 t/a

Innovations and Client’s Advantages

  • Installation of solar collectors for hot water

Picture: © University of National and World Economy

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