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Copyright © 2014 NTT FACILITIES,INC. All Rights Reserved.

Negawatt Aggregation Services

in Japan

November 19, 2014

Kenji Yokoyama


1 Demand Response Market in Japan

Fiscal Year 2012 2013 2014 2015 2016 ・・・ 2020

Electricity System

Reform

Negawatt

Transaction Market

▲

Cabinet

Decision

▲

Organization for

Nationwide Coordination

of Transmission Operators

▲

Full

Liberalization

▲

Separation of

transmission/

distribution

▲Negawatt Exchange

Market Open ▲ Negawatt

Market

Guideline

7.5～15.0 GW (Peak of power demand: 157GW)

Demand Response Market in Japan (year)

$375～750 M (DR price rate: $50000/MW/year)

A Negawatt exchange market is scheduled to be launched in 2017.

The demand response market scale is about $700M.


2 Technical Standardization of DR

METI and JSCA consider the OpenADR2.0 protocol to be the

standard of demand response in Japan.

Waseda university have evaluated this protocol based on Japanese

use cases.

http://www.waseda.jp/jp/news13/130722_adr.html


Negawatt Aggregation Service for business 3

Kansai Electric

Power Company

Kyushu Electric

Power Company

Tokyo Electric

Power Company

Shikoku Electric

Power Company

Chubu Electric

Power Company

Hokkaido Electric

Power Company

ENNET Electric Power Company

Electric power consumers get a financial incentive as a reward of

"Negawatts".

Negawatt aggregation service started in Japan from July, 2012.


4 contr

act

ele

ctr

icity(k

W)

500kW

50kW

Special high-voltage

customers (50,000)

Low-voltage users

(71 million)

・Smart meter and BAS/BEMS is already installed

in a building.

・There is a supply and demand adjustment contract.

・Smart meter and BAS/BEMS is not installed

in a building.

High-voltage

customers (770,000) Main Customers of Aggregator

Main Customers of Aggregator in Japan

Many special high-voltage customers are already have a supply and

demand adjustment contract with an electric power company.

Main customers of aggregators is the high-voltage ones in Japan.


5

air

conditioning

Others

Lighting

Controlling

Board

Outdoor

Equipment

Indoor

Equipment

Internet

24h×365days Server

Power Company

Demand of

power-saving Negawatt

Lighting

Remote Control(On/Off)

Demand Control （Autonomic Control)

Measurement and Control

Equipment(GMU)

Demand Control

Equipment

Electricity Meter

Electricity Meter

ＨＴＴＰＳ

System Configuration for Aggregation

Power Company's

electricity meters

Lighting Lighting

Remote Control

Autonomic Control

Controlling

Board

Indoor

Equipment

Indoor

Equipment Digital Signage

Web and Toolbar in PC


＜Best Effort Demand Response＞＜Auto-Demand Response＞

Power Company Aggregator Customer

Demand of

Power Saving


Demand

and Supply

Planning

Yes or No

Scheduling

[Tim

e]

Demand

and Supply

Adjustment

Negawatt Prediction

Automatic

Control

The end of power saving

Maintaining a comfortable

environment

Commitment of Negawatt

Demand

and Supply

Planning


Voluntary

Power Saving

Action

Flow Charts of Demand Response 6

Demand of

Power Saving

On

th

e d

ay

Th

e d

ay b

efo

re

[Tim

e]

On

th

e d

ay

Th

e d

ay b

efo

re Demand of a certain amount of Power-Saving

We provide two types of demand response, “Best Effort” and “Auto”.

The auto-demand response is able to maximize the amount of

Negawatt while maintaining a comfortable environment.


7

Electric Power Company

A


B


C

Customer High-voltage

（more than 50kW）

High-voltage

（more than 50kW and less than

2,000kW）

High-voltage

（more than 50kW and less than

500kW）

Power -

Saving

Time Slot

Weekday, 13:00 to 16:00 Weekday, 13:00 to 16:00 Weekday, specified time slot

A Unit of

Measure

Amount of electricity

for 30 min.


for 30 min.


for 60 min.

Baseline Maximum value in a month Average value of top 4 days

in last 5 days

Value in same time slot

previous day

A Unit of

Price

¥15/kWh (Best effort)

¥30/kWh (AutoDR)

About ¥225/kWh

(Floating)

About ¥240/kWh

(Floating)

Aggregation Service Conditions

There is no penalty and no basic payment independent on demand response dispatch.


8 Number of Demand Response Dispatch

Fiscal Year

2012 2013

Summer Winter Summer Winter

Electric Power

Company A 2 1 0 0

Electric Power

Company B 1 - 7 5

Electric Power

Company C 0 - 0 0

Electric Power

Company D - 0 0 1

Electric Power

Company E - - - -

Electric Power

Company F - - - -

Demand responses have been dispatched only 17 times over two years

from 3 electric power companies.


9 Issues of Negawatt Aggregation Services

Low negawatt price

No standardized procedures

Equipment cost burden

Low dispatch numbers

These issues should be solved

to vitalize the nagawatt aggregation markets in Japan


Negawatt Aggregation for Condominium 10

7 11 16 23 24

10

20

30 .

（その他季）

（夏季）

（従来の料金）

（新たな時間帯別の料金）

時間[h]

単価[円/kWh]

昼間の単価を高く、朝晩・夜間の単価を低く設定。昼間の電力使用を

抑制して朝晩夜間に分散して使用すると電気料金が安くなるメニュー

昼間朝晩夜間夜間

Unit price(¥/kWh)

Time(h)

(Summer)

Common

price

Time-of-Use price

Night Morning Daytime Evening Night

(Others)

Communication line

Power line

Power Usage

DB Server

Demand Response

Ennet

Smart

Meter Power

Meter

Energy Visualization

Time-of-use Pricing

Smart

Meter

Smart

Meter

Smart

Meter

Power receiving and

transforming equipment

Electric power

retail company

Customer

②Request for load reduction

①Peak demand

④Discount

③Reduce electricityconsumption

Time

pow

er

consum

ption (

kW

)

Let's help

save energy

Customer’s

Power demand

data

We provide power supply service for condominium with smart meters.

EnneVision® offers energy visualization, time-of-use pricing and

demand response services.


Time-of-use Pricing Service

7 11 16 23 24

10

20

30 .

（その他季）

（夏季）

（従来の料金）

（新たな時間帯別の料金）

時間[h]

単価[円/kWh]

昼間の単価を高く、朝晩・夜間の単価を低く設定。昼間の電力使用を

抑制して朝晩夜間に分散して使用すると電気料金が安くなるメニュー

昼間朝晩夜間夜間

Unit price (¥/kWh)

Morning Daytime Evening Night Night

Time (h)

Time-of-use Pricing Summer

The other season

Common Pricing

The time-of-use pricing is higher in daytime and lower in evening and

night than the common pricing in the service.

11


Subscriber of

time-of-use rate Non-Subscriber

0.25

0.35

0.45

0.55

0.65

0.75

0.85

0:0

01

:00

2:0

03

:00

4:0

05

:00

6:0

07

:00

8:0

09

:00

10

:00

11

:00

12

:00

13

:00

14

:00

15

:00

16

:00

17

:00

18

:00

19

:00

20

:00

21

:00

22

:00

23

:00

kW

0.25

0.35

0.45

0.55

0.65

0.75

0.85

0:0

01

:00

2:0

03

:00

4:0

05

:00

6:0

07

:00

8:0

09

:00

10

:00

11

:00

12

:00

13

:00

14

:00

15

:00

16

:00

17

:00

18

:00

19

:00

20

:00

21

:00

22

:00

23

:00

kW

Morning Daytime Evening Morning Daytime Evening

2011：▲20％

2012：▲16％

2011：▲11％

2012：▲10％

2010年

2012年

2011年

2010年

2012年

2011年

Night Night

Effects of Time-of-use Pricing

The subscribers consume more electricity at morning and evening

The subscribers consumed more electricity in the morning and

evening inversely proportional to the time-of-use pricing.

The peak shift of 6-9% in daytime was confirmed by comparing the

electricity consumption of subscriber and non-subscriber.

12


Demand Response Service

Smartphone displaying

a demand of power saving

＜Best Effort Demand Response＞


Demand of

Power Saving

[Tim

e]

Demand

and Supply

Planning


Voluntary

Power Saving

Action

Demand of

Power Saving

On

th

e d

ay

Th

e d

ay b

efo

re

Financial

Incentive

Financial

Incentive

Condominium residents get a financial incentive as a reward of

"Negawatts".

The baseline is the value in same time slot previous day

13


-

0.20

0.40

0.60

0.80

前日使用電力当日使用電力

〔kW〕 Power reduction rate of

power-saving residents（y％）

No

Power-saving

power-saving

Effects of Demand Response

x ％

(100-x)％ Ratio of the

number of power-

saving residents

(x%)

Power reduction

rate of power-

saving residents

(y%)

July to Sept.

2011 43％ 25％

Dec. to Feb.

2011 40％ 39％

July to Sept.

2012 35％ 39％

Energy Consumption

One day before DR day

descending ascending

Only about 40% of residents reduced the energy consumption

according to the demand response.

The power reduction rate of the power-saving residents was about

35%, but no total power was reduced in this service.

No total power was reduced

in the demand response

14

Ratio of the number

of residents


～

Electricity Supply

Battery

Electric Power

Conversion System

PV System

Energy Center

Disaster Restoration Houses

Assembly Hall

Electric Power

Street Light

Information

15

Energy Management

System

cogeneration

System

(CHP)

PV System

PV System

PV System PV System

Energy management system(EMS) monitors the energy consumption

of the disaster restoration houses and the generation of PV systems.

Demand response, CHP and battery is utilized to optimize the energy

use.

Smart Community of NTT Facilities


Energy Center Electric

Power

Company

CHP

Power

Conversion

PV

BATT

ＨＧＷ

Ｍ

Ｍ

ＭＭ

Ｍ

Ｍ

Ｍ

Little warm

water

Tap water

Gas

Electricity

Meter

Terminal

・Remote Control

・Demand Response

・Fee Collection

Energy Management System

16 Diagram of Energy Management


Waterworks

Department

GAS

Department


17 Disaster Restoration Houses in Sendai City


Energy Center Smart Meter BOX


18

The institutional design of a negawatt exchange

The installation of smart meters

Electricity deregulation.

Bundling of the demand response service with

other services

Construction of a smart community.

The future of the negawatt aggregation

Key points to expand

the demand response market in Japan

Thank you for your attention.

negawatt aggregation services in · pdf filetechnical standardization of dr 2 meti and jsca...

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