Katri kuusinen

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Presentation on the Energy Efficiency in schools: a learning oportunity workshop held in Coimbra on the 17 of June 2010. This presentation is about the work done on energy efficiency in Helsinky schools.

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Katri kuusinen

  1. 1. SAVE ENERGY SAVE ENERGY Energy Audits in Helsinki Katri Kuusinen City of Helsinki June 17th, 2010
  2. 2. Background for Energy Efficiency Work • Energy Saving Board established 1974 • Annual energy consumption monitoring and reporting started in 1978 • First national Energy conservation agreement in 1993 • First energy audits in 1994 (government subsidies 40 – 50 %) • Monthly energy consumption monitoring and reporting started in 1995 • Objective in national voluntary Energy and climate agreement – 80 % of public buildings to be energy audited by the year 2005 • Objective in Energy Efficiency Agreement in 2008 – 9 % energy saving from the level of 2005 until 2016 (city organization) • Objective in Energy policy lines (2008) and in Covenant of Mayors (2009) – 20 % CO2 emission reduction from the level of 1990 by 2020
  3. 3. Energy Audits in Public Buildings • 80 % of the building stock energy audited – 11,2 million cubic meters – 3,6 million square meters – 500 energy audits • Average results, saving potential – Heat 13 % – Electricity 9 % – Water 6 % • Average payback period of reported saving actions 1.3 years • Future: energy audits for new buildings, new energy audits for buildings with major changes & changes in energy consumption figures, follow-up energy audits after 10 years
  4. 4. Schedule of Energy Audits in Save Energy • Energy audits made by certified energy auditors of a private consulting company • Audit work from February to May • Kitchen electricity consumption measurements 6 weeks in April-May • Preliminary reports in May-June • Final reports (after commenting & handover meetings) in October
  5. 5. Included in the Energy Audits • Total electricity, heat and water consumptions of the total building, not just pilot application areas • Calculation of energy consumption distributions based on installed power and operational times of equipment • Momentary room temperature measurements • Continuous electrity consumption measurement for 6 weeks in the kitchen of Ala-Malmi School
  6. 6. Energy consumption distributions in Ala-Malmi Heat consumption Electricity consumption 1367 MWh/a 306 MWh/a Other Indoor Hot IT equip- lighting water equip- ment 17% 2% ment 6% Outdoor 12 % lighting Venti- 6% lation Kitchen 32 % Heating 17% 66% HPAC 42 %
  7. 7. Energy consumption distributions in Pihkapuisto Heat consumption Electricity consumption 380 MWh/a 280 MWh/a Plug-in Other Hot equip- equip- Indoor water ment ment lighting Heating 7% 12 % 6% 22% Outdoor 17% lighting Kitchen 4% 18% Venti- lation HPAC 32 % 42 %
  8. 8. Monthly consumptions in Ala-Malmi Heat Consumption Electricity consumption 250 35 30 200 25 150 20 100 15 10 50 5 0 0 Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov
  9. 9. Monthly consumptions in Pihkapuisto Heat Consumption Electricity consumption 60 30 50 25 40 20 30 15 20 10 10 5 0 0 Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov
  10. 10. Results in Ala-Malmi • Saving potential – Heat 5 % – Electricity 15 % – Water 4 % • 15 proposed saving actions with profitability calculations • 6 proposed actions in check-list • Payback period of proposed actions on average 0.4 years (varying from 0 to 4.3 years) • Required investments 1,960 €
  11. 11. Results in Pihkapuisto • Saving potential – Heat 16 % – Electricity 20 % – Water 4 % • 10 proposed saving actions with profitability calculations • 5 proposed actions in check-list • Payback period of proposed actions on average 2.1 years (varying from 0 to 7.5 years) • Required investments 22,600 €
  12. 12. Examples of proposed saving actions • Changing the operational time of ventilation units • Lowering the temperature of inlet air • Refurbishment of heat recovery unit • Shutting down computers during the nights • Replacing incandescent lighting with fluorescent lighting • Changing the adjustments in the control system of lighting • Installation of limiting nozzles in water taps and showers
  13. 13. Challenges in implementing the actions • Resources for investments – Budget – Personnel • Distributed responsibilities and benefits – Building owner – Building end-user – Building maintenance provider – Building energy use expertise • Commitment of city personnel in all organization levels
  14. 14. Education for staff and citizens • Training of Eco Supporters (city organizations) • During Energy Awareness Week (week 41 every year) – Campaigns for citizens, employees and school children • For schools – Training occasions in schools – Visits to the tropical garden Gardenia (greenhouse) and lessons about “how to reduce greenhouse gas emissions” – “Everything’s Working” educational material package for teachers and school children – 30,000 children have participated • Display poster (energy certificate) delivery trainings
  15. 15. Energy Certificates in City of Helsinki • Finnish Act on Energy Certificates – Compulsory for new buildings and buildings sold or rented out – Voluntary for other existing buildings – public buildings – Helsinki provides public buildings with Display® Posters • Display® – to motivate and activate building users – Developed in EU-project coordinated by Energie-Cités – Financed by EU – Intelligent Energy Europe Programme – First Display poster in 2006 to city’s office building – 150 buildings in Helsinki have received Display posters
  16. 16. Display Poster
  17. 17. Thank You! www.hel.fi

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