A proposal for additional screening criteria
ofASEAN Energy Award
ZEB Family Concept

http://www.jase-w.org/english
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ASEAN ZEB Dissemination SWGin JASE-W
The purpose of this Sub-Working Group:

To establish the ISO standard of ZEB
family concept in order to disseminate
ZEB in the world
For the moment, it is important toestablish the unified principle of ZEB
family concept in ASEAN region.
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A Proposal

Additional guideline for ASEAN Energy Award
The concept of ZEB is very useful for designing energy efficientbuilding.
We would like to introduce you ZEB Family concept and suggest you toapply to the assessment point for Asean Energy Award.

1. Take a step-by-step approach
2. Continuous energy management & monitoring
3. Clear roadmap to realize ZEB

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1.Take a step-by-step approach
First step to ZEB is Energy Saving.
Design Phase
・Building envelope
・multi-layered Glass・Efficient Air conditioners
・LED＋Operation・Controllers・・・• To reduce energy consumption in cities, it is reasonable tobuild more energy efficient buildings than only one real ZEB.

＜Energy efficient buildingsZEB4

2.Clear vision to realize ZEB• Setting milestones to ZEB,
is helpful to make issues clear and improve
Net ZEB
energy efficiency.
-80%
-50%
-30%
Energy Saving
Renewable Energy※ How to set the baseline is the issue for discussion
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3.Continuous energy management & monitoring• It is necessary to secure the performance as initiallydesigned,By monitoring energy consumption
continuouslyThrough regular inspection

6Additional guidelinefor
ASEAN Energy Award

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1.Set reasonable baseline and target• In Japan, we set benchmarks in industrial and commercial
sectors to accelerate energy savings. This initiative will coveraround 70% of all industrial and commercial sectors.
Industrial sector

Commercial sector

6 categories 10 areas
Utility company
Steal industry
Oil refinery
Paper Industry
・・

6 categories
・Convenience store
・Hotel・Department store
・Rental Office・Supermarket
・Shopping Mall

Category

Benchmark index

GoalTarget

Convenience
store

Total amount of electricity
consumption

EnergyConservation
Law level

50% less?
8To promote ZEB Family in Japan…
2017 Energy PerformanceStandard(Regulatory Requirement)(e.g. for Office)

２★
-20％
３★

*Do not consider renewables
injected into the grid(Only consider selfconsumption) The Baseline is 2017 Energy
Performance Standard.
 Labeling system for energy saving⇒BELS-30％
４★
-40％
５★

-50％
５★
ZEB
Ready-75％
５★
NearlyZEB-100％(Net Zero)

５★
『ZEB』

*Consider renewables
injected into the grid (“Net”ZEB) Japanese government announced“ZEB design Guideline”.
 The Energy consumptionof ZEB Ready Office in Japan
is approx.185kWh/㎡.

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2.Feasible Energy management plan
Energy management Plan

Who?

What?

How ?

How often?

Operation of・Air Conditioner・Ventilation
・LED etc…

TargetUntil …
save ..％

InspectionWho?
(The third party)e.g.
Green Building
CommitteeWhat?

How ?

How often?

TargetEvery Yeare.g.
Win the officialaward

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3.Make a Roadmap to ZEB• A roadmap to ZEB is usefulfor continuous energy savings.
Completion ofbuilding

In 5 years

In 10 years

ZEB

Implementing
Solar Power Energy
Optimizing
Implementing AC Operation
Energy saving

equipments

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ZEB Family Concept
in Japan

12Energy Consumption Trends in Japan(millions kL of oil equivalent)

Final energy
consumption(Unit: Trillion yen. 2005 prices)

1973→2014

Real GDP

Final energy consumption
FY1973→2014

1.2-times

1973→2014

Transportation sector
Transportation

2.4 times
Transportation sector

19732014
1.7-fold

1.7-times

Residential sector

Residential sector

19732014
2.0-fold

Commercial sector

Commercialsector

2.2-times
Companies,

Consumer

Residential Commercial

Offices andOther
2.4-fold 19732014sectorIndustry
sectorIndustry sector

2.4-times

0.8-fold 19732014

FY

industry

Overall:2.0-times
1.2-fold19732014

0.8-times

Sources: Comprehensive Energy Statistics” and “Annual Report on National Accounts.

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Evolution of energy consumption by subsector of
the commercial sectorOffices and buildings
for FY 1973

Hotels and inns
for
FY 1973

Otherservices

Restaurants
and bars
Wholesalers
and retailers

Hospitals
Schools
Theaters andrecreation
facilities
Hotels and inns
Department
stores
Offices andbuildings(Note)In the Comprehensive
Energy Statistics, themethods to calculate thevalues were modified fromFY 1990.
(Sources)
Estimation based on theHandbook of Japan's &World Energy & Economic
Statistics issued by theInstitute of Energy
Economics, Japan andComprehensive Energy
Statistics by the Agency for
Natural Resources andEnergy

Fiscal year14Introduction of ZEB Family Concept• The ZEB (Net Zero Energy Building) is receiving a lot of attention because it
can minimize indoor energy consumption (e.g., in offices, schools, hospitals,hotels, etc.) and allow buildings to function independently in terms ofenergy during a disaster.
• Japan’s Strategic Energy Plan (adopted at the Cabinet Council in April 2014)
establishes the following goals to realize and promote of ZEBs:– Realize ZEBs in newly constructed public buildings by 2020
– Realize ZEBs in average newly constructed public and private buildings by 2030• To achieve the above goals, the ZEB Roadmap Examination Committee,
which is composed of scholars, experts, and professionals from developers,
architects, and general contractors, has been established to examine (1) thedefinition and evaluation method of ZEBs, (2) the feasibility, and (3)measures to promote ZEBs.

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Definition and evaluation methods of ZEB Family•••

The goal is to achieve net zero energy consumption by creating energy (e.g., via solar power) while
fulfilling the higher than 50% energy saving (ZEB Ready).
However, the evaluation method should take into account that high-rise and large-scale buildings
have limited rooftop areas, and consequently, limited energy production capabilities.
If energy savings of at least 75% is achieved the Nearly ZEB status is granted.
If energy savings of 100% or more is achieved, the ZEB status is granted.
* The method to determine 100% or 75% energy savings should follow the Energy Saving Standard. This rule should apply to air-conditioning,
hot water supply, ventilation, lighting, and elevators. In addition, the production of renewable energy on site (inside the premises), including
the part of electricity sold (only the surplus power sold), should be taken into account.

ZEB ReadyNearly ZEB

ZEB(Energy saving of 50% or more) (Net energy saving of 75% or more)(Net energy saving of 100% or more)50%
reduction
Airconditioning
Ventilation

Lighting
Hot water supply

Elevators

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Volume of energy supply

Definition and evaluation methodsof ZEB Family

Energyindependence④ Introduction of renewableenergyZEB

Reduction of100% or more(Net Zero)

NearlyZEBReductionof 75% ormore

Energy① Load reduction (improving heat insulation andsolarshading, etc.)
savings② Use of natural energy③ Equipment and systems with improved
efficiency of the equipment

Reduction of 50% or more
ZEB
Reduction ofReady 50%or more
Volume of energy consumption

Benchmarkprimary energy
consumption
Reference Building

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Definition and evaluation methods of ZEB Family• In the design phase of a ZEB, it is important to achieve energy savings by Upgrading the building envelope, which has long life and is difficult to renovate
 Improving the efficiency of the equipment
 Maximizing the architectural planning method
so as to reduce by at least 50% compared to the existing Energy Saving Standards.
• The above energy saving rate should be evaluated at the design phase by the calculatedvalue.
Requiring a minimal
Efficiently using energy
amount of energy
Ordinary
ZEB
buildings Ready
Airconditionin
gHotwatersupply

Elevators

Solarshading

50% reduction
Use of naturalventilation and daylight

Ventilation

Lighting

Improvingheat
insulation

High-efficiency
airconditioning＋High-efficiency
ventilation

High-efficiency
hot water supply

High-efficiency
lighting

High-efficiencyelevators

Airconditioning

Ventilation

Lighting
Hot watersupply

Elevators* The calculation method should be consistent with the Energy Saving
Standard. However, the 50%-higher energy saving rule applies to airconditioning, hot water supply, ventilation, lighting, and elevators. In
addition, reduction due to renewable energy should not be taken intoconsideration.

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ZEB Family Concept
As Standards,
proposed at AJEEP
Inception Meeting 201719

An agreement to promote ZEB Family Concept
in ASEAN at AJEEP Inception Meeting20

ZEB Ready is the First Step to Real ZEB
ZEB Family Concept

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Coverage of the Standard

DESIGN

Building Design&Materials&Equipment

CONSTRUCTION

OPERATION&MAINTENANCE

INSPECTIONEVALUATION

Energy Management&Performance
Measurement(Monitoring)22Summary
Additional guideline for ASEAN Energy Award
1. Reduction of Energy Consumption to the target level*
based on ZEB family concept.
* A baseline has tｏ be specified
2. Feasible plan for continuous energy management &monitoring system in order to apply ZEB family
concept.
3. Clear step by step roadmap to realize ZEB in thefuture23

Thank you for your listening
Please support us for disseminationof ZEB family concept in ASEAN
region.

Japanese Business Alliance forSmart Energy - Worldwide
http://www.jase-w.org/english
Supported by The Energy Conservation Center, Japan
Ministry of Economy, Trade and Industry
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