SAVE ENERGY

SAVE ENERGY Energy Audits in HelsinkiKatri KuusinenCity of HelsinkiJune 17th, 2010

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

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

Schedule of Energy Audits in Save Energy

• Energy audits made by certified energy auditors of a privateconsulting 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

Included in the Energy Audits

• Total electricity, heat and water consumptions of the totalbuilding, 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 weeksin the kitchen of Ala-Malmi School

Energy consumption distributions in Ala-Malmi

Heating66%

Venti-lation32 %

Hot water

2%

Heat consumption 1367 MWh/a

Indoor lighting

17%Outdoor lighting

6%

HPAC42 %

Kitchen17%

IT equip-ment12 %

Other equip-ment6 %

Electricity consumption 306 MWh/a

Energy consumption distributions in Pihkapuisto

Heating17%

Venti-lation32 %

Hot water

7%

Heat consumption 380 MWh/a

Indoor lighting

22% Outdoor lighting

4%

HPAC42 %

Kitchen18%

Plug-in equip-ment12 %

Other equip-ment6 %

Electricity consumption 280 MWh/a

Monthly consumptions in Ala-Malmi

0

50

100

150

200

250

Jan Mar May Jul Sep Nov

Heat Consumption

0

5

10

15

20

25

30

35

Jan Mar May Jul Sep Nov

Electricity consumption

Monthly consumptions in Pihkapuisto

0

10

20

30

40

50

60

Jan Mar May Jul Sep Nov

Heat Consumption

0

5

10

15

20

25

30

Jan Mar May Jul Sep Nov

Electricity consumption

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 €

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 €

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

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

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

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

Display Poster

Thank You!www.hel.fi