The Current Situation of Energy Saving and Low Carbonizing Effort

in Tokyo

The Current Situation of Energy Saving and Low Carbonizing Effort

in Tokyo

Global Energy Basel 2012

February 21, 2012

TOMOHISA TAKEBE

ACROS Fukuoka

Green

National Institute of Radiological Sciences

Nagakute Japanese Government Pavilion for Expo 2005 Aichi

Wind

NATC(Nissan Motor Co., Ltd. Advanced Technology Center)

Nihon University Funabashi Campus No. 14

Incubation On Campus, Waseda University Honjo Campus

Solar

Itoman City Hall

National Institute of Advanced Science & Technology (AIST), Waterfront of Tokyo

Mabuchi Motor Company Headquarters

5Presentation TopicsPresentation Topics

1.Current situation of energy saving in Japan and Tokyo after the earthquake

2.Low Emission Buildings TOP30 in Tokyo, and the latest energy efficiency technologies in Japan

3.Impact on the spread of Low Emission Building by Tokyo’s Policy

1

1. Current situation of energy saving in Japan and Tokyo after the earthquake

1. Current situation of energy saving in Japan and Tokyo after the earthquake

7Hot and humid summer, and power shortage Hot and humid summer, and power shortage

-10

-5

0

5

10

15

20

25

30

40 50 60 70 80 90 100

相対湿度の月別平年値（％）

℃気

温の

月別

平年

値（

）

Tokyo Berlin Wien Sapporo

Climograph (Average value of 1971 to 2000)

Tokyo, Hot and Humid SummerPeak Power hike in Summer by

Cooling LoadA Big Social Experiment for

Energy SavingIn the Station and the

Underground Passage, Escalators and Lightings were cut

te

mp

era

ture

()

℃

relative humidity (%)

2

In the Station In the train Escalator

8Energy-saving situation in the summerEnergy-saving situation in the summer

Source : the questionnaire by the TMG

3

Lighting has been reduced to about 300-500lx in the Office Room Air Temperature have been raised to more than about 28 deg CElevators and Escalators have been partially suspendedEnergy Consumption trend used has been shifted from Electric to GasPeak power could be reduced by 15-30% in 2011

Illuminance Elevator suspension

Peak Power reduction rate

lighting reduction Room Air Temperature

17 26 27 14 11 4 1

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

2011 summer

more than 30% 25% 20% 15% 10% 5% No reduction

2

5

4

1

22

17

10

46

38

87

26

41

0% 20% 40% 60% 80% 100%

2010 summer

2011 summer

Predicted in 2012

almost all units more than half units partially None suspended

2

16

12

19

55

50

49

14

19

16

1

4

14

15

11

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

2010 summer

2011 summer

Predicted in 2012

< 300lx about 500lx about 750ｌｘ > 1000lx unknown No answer

3

1

2

2

10

9

2

40

35

11

41

33

81

8

20

0% 20% 40% 60% 80% 100%

2010 summer

2011 summer

Predicted in 2012

all 3/4 1/2 1/4 No operation unknown

0

2

1

33

66

60

11

15

13

33

14

19

13

3

4

8

1

3

2

1

1

0% 20% 40% 60% 80% 100%

2010 summer

2011 summer

Predicted in 2012

> 29℃ 28℃ 27℃ 26℃ 25℃ < 24℃ unknown

9Deterioration of the Emission Factor of Power and Investment in BCPDeterioration of the Emission Factor of Power and Investment in BCP

Trends in emissions per unit power (A General Electricity Utility)

Deterioration of the Emission Factor of Power (due to the nuclear power plant suspensions)

We need to proceed further on Building Energy Saving

Source : The Federation of Electric Power Companies of Japan

Value that reflects the Kyoto mechanism credits

4

Deterioration of the Emission Factor of Power?

BCP (Business Continuity Plan) Raising Awareness of BCP (Business Continuity Plan) Increased of Investment in Power Generation System

(On -site Power Generation and Co-generation)

2. Low Emission Buildings TOP30 in Tokyo, the latest energy efficiency technologies in Japan

2. Low Emission Buildings TOP30 in Tokyo, the latest energy efficiency technologies in Japan

11

TOKYOMETROROLITAN GOVERNMENT

TOP30 buildings were selected in line with the policy measures of TMG.

Existing buildings section:Highly valued in the C&T Program

New building section: Based on the evaluation of the

Green Building Program

5Selection of Low Emission Buildings TOP30Selection of Low Emission Buildings TOP30

12

Top Level Facility Certification In the Tokyo Cap-and-Trade Program

Assessment category Required

General

Extra credit

I. General Management Establishment of cooperative structures for energy conservations, energy management status

23 4 1

II. Energy Performance (building Shells and equipments)　 Energy efficiency of air conditioning, lighting, and other facilities, equipment efficiency (COP), etc.

26 39 45

III. Operations　 Indoor temperature and humidity management, facility maintenance and management, etc.

25 56 9

Total 228 items

TOP30 Existing Building SectionTOP30 Existing Building Section 6

Top-Level Installation : Total Score of 80 or more Near-Top-Level Installation : Total Score of 70 or more Scores are set so that the total for Required items and General items is 100 Extra credit items are added if additional items are applicable

13

Assessment of Energy PerformanceIn the Tokyo Green Building Program

Assessment category Criteria

I. Heat load resistance of the shell

Heat insulation of walls and windows, measures for shielding them from sunlight, etc.

20% or higher reductions from PAL standard (the national standard)

II. Energy efficient equipments

Introduction of energy saving measures in the facilities (air conditioning, lightings, ventilation, water heating, and elevators)

30% or higher ERR standard (aggregation of the national standard)

III. Efficient operation systems Measurement and energy management

system for optimal operation

Level 2 or higher Ex; Introduction of certain level of BEMS

IV. Use of renewable energy 　 On-site installation of renewable energy

including PV and solar heat system

Amount of renewable energy introduced Ex; 30kW in the case of PV

★ Perimeter Annual Load (PAL) ★★ Energy Reduction Ratio (ERR)

★★★ Building and Energy Management System (BEMS)

7TOP30 New Building SectionTOP30 New Building Section

148

15The Latest Architectural Energy-Saving Technology in JapanThe Latest Architectural Energy-Saving Technology in Japan

Double Skin Façade, Air Flow Window Louver, Light Shelve Solar control blind system Swing Window Lighting Duct Eco void for Natural lighting and Natural Ventilation Cool & Heat Trench for use of Geothermal Heat etc.

Cool & Heat Trench

Air Flow WindowDouble Skin

Louver etc. Light Shelve

Eco void

Swing Window (Moving in the wind )

Balance weight

Axis

Lee

9

16

The Latest Energy-Saving Technology in Air Conditioning System and Lighting System

The Latest Energy-Saving Technology in Air Conditioning System and Lighting System

Air Conditioning System High Efficiency Heat Source Equipment

(Inverter Turbo Chiller and High Efficiency Heat Pump etc.) Geothermal Heat Pump Medium Temperature Chilled Water System Radiant Cooling and Heating System Separation of Latent Heat & Sensible Heat Air

Conditioning System Task & Ambient Air Conditioning System

Lighting System High Efficiency LED Lighting ( >100lm / W) Lighting Control System with Motion Sensors

and Illumination Sensors Task & Ambient Lighting System

10

3. Impact on the spread of Low Emission Building by Tokyo’s Policy

3. Impact on the spread of Low Emission Building by Tokyo’s Policy

18Tokyo’s Policy impacted on Low Emission buildingTokyo’s Policy impacted on Low Emission building

History of Low Emission BuildingsIn Japan, Low Emission Buildings has been

built gradually since the mid-2000sAccelerated in the 2010s

Low Emission Buildings and Management High Interest Owners to CO2 Reduction are

actively investing in energy saving, as part of their Management Strategy

Energy Saving has become business challenges by Tokyo’s policy

11

19Tokyo’s Policy impacted on Low Emission buildingTokyo’s Policy impacted on Low Emission building

1. Tokyo Green Building Program Japan’s First Building Environmental EvaluationPropagated the Philosophy of Green Building

2. The Conditions of Urban Development to Contribute to Low Emission Regulated the efforts of the carbon negative over a

certain level to be applied to urban development Effectively developers are required to build high-

environmental performance building only in their large-scale development

3. Certification as Top-Level Installation Top-Level Installation has become a brand all leading developers aim for top-level installations

12

20At the end : Next Stage to ZEBAt the end : Next Stage to ZEB

Source : For Implementation and Deployment of ZEB

Image of ZEB

Amount of Energy-saving Technology and Energy Saving

In Japan, Advance the Development of ZEB aims to realize the new construction for all public buildings to be ZEB by 2030

Light Duct System

VWV & VAV Control System

CO2 Outdoor Air Control System

Photovoltaic Power Generation System

High Efficiency Heat Source Equipment

LED LightingLighting ControlMotion Sensors Control SystemInitial Illumination Correction Control System Use Daylight Control SystemBlind control System

Natural ventilationNight purgeHybrid air conditioning control System

Integrated control System Utilization of unused energy of the city

MJ/(m2 ･y)

Passive ArchitectureUse of Natural Energy

High Efficiency Heat SourceLow Transport

High Efficiency Lighting

Low OA equipment

Other

PV

standard case

13

21

Thank you for your attention