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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 …

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.

Published in: Education, Technology, Business

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  • 1. SAVE ENERGY SAVE ENERGY Energy Audits in Helsinki Katri Kuusinen City of Helsinki June 17th, 2010
  • 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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. Display Poster
  • 17. Thank You! www.hel.fi