Document for the Website

The low carbonization of Mobile communication’s BTS(Base Transceiver Station) by the Introduction of“TRIBRID system” in Indonesia

KDDI Corporation

Company Profile

Personal
Segment

Value
Segment

Telecommunication
services for
consumers

Content
application andpayment
services for
consumers

BusinessSegment

GlobalSegment

Telecommunication
and IT
solution/Cloud
services forenterprises

Telecommunication
and IT solution
services for
consumers andenterprises

Strength in Mobile + Fixed Networks & Global Capability
2KDDI’s Technology: TRIBRID®

 Generated by solar panels, stored power in batteries, commercial power
or generated power by Genset, are efficiently provided for each time
period to the base station.

Solar Power GenerationController
Commercial
Electric poweror Genset

BatteryBaseTransceiver
Station
TRIBRID BTS in Japan© Copyright 2017 KDDI Corporation. All rights reserved.

3

Result from Trial

Trial system was installed and has been ensured that system
reliability and effectiveness before implementation.

By the trial, 43% energy saving was achieved even with olddiesel generator, and also very limited solar power effect due
to shaded site condition.

【Before and After TRIBRID】
Parameters

BeforeAfter(a) Generator’s Output(kW)4.0

9.1(b) Generator’s Operating Hours (h)2410(c) Hourly Fuel Consumption (L/h)

3.3

4.5(d) Fuel Consumption (L/day) (a)×(c)

79.2

45.0

Saving Fuel Amount (L/day)

34.2

Saving Rate(%)

43.2

Comparison of the one day© Copyright 2017 KDDI Corporation. All rights reserved.

4

Site Survey© Copyright 2017 KDDI Corporation. All rights reserved.

5Schedule, Current Progress, and Challenges
2017

2018

2019

May – Jun.: Pre-Check, Site Survey
May - Aug.: Procurement, Design
Jul. - Oct.: Site Preparation
Jul.: Apply for registration of the MRV methodology
Sep.: Draft of PDD
Sep.: Monitoring PlanOct.: Apply for registration projectAug. – Nov.: Installation for 22sites

Upon the completion of Installation(*): Monitoring, Verification, Optimization* Requires the inspection by Japan Government.
Feb.: Reporting Current Progress: Completed site survey, and started procurement and design.
 Challenges: Tight timeline to complete installation to all 22 sites, some of which access isquite tough.
© Copyright 2017 KDDI Corporation. All rights reserved.

6Formation for Demonstration Project
JCM Bilateral Document

Memorandumof Understanding

Ministry of Industry

New Energy and Industrial TechnologyDevelopment Organization

KDDIImplementation
Arrangement

Huawei Services

XL Axiata

KDDI Indonesia

JO Sancom-Mitra

Engineering
Equipment Supplier© Copyright 2017 KDDI Corporation. All rights reserved.

7

Formation for Future Deployment

XL

TRIBRIDTELKOMSEL

indosatIndonesia Market
TOWER
BERSAMAGROUP

PROTELINDO

ibs

Controller

Local Supplier
Battery, PV, Genset, etc.
Local Engineering Venderetc
Local OPEX Provider
Maintenance, Fuel delivery© Copyright 2017 KDDI Corporation. All rights reserved.

8

GHG Emission Reduction Measures
Reduces the amount of fossil fuels used in diesel generator and the amount of electricity
imported from the grid (in grid connected areas) by introducing the electric power controlsystems with solar PV, and battery (KDDI’s TRIBRID control systems).
【Before Project Implementation】
Grid electricity

Rectifier(Grid connected area only)
BTS

Dieselgenerator

Solar PV

【After Project Implementation】
Grid electricity(Grid connected area only)

Rectifier

TRIBRID
Controller
BTS

Dieselgenerator© Copyright 2017 KDDI Corporation. All rights reserved.

Storage Battery11

GHG Emission Reduction Through
TRIBRID System Installation
CO2Emissions
GridElectricityCO2 Emissions
Reduction

GridElectricity

GridElectricity
DieselDiesel【Before Project Implementation】
CO2 emissions from gridelectricity and/or diesel
generator.

【Reference】
CO2 emissions from gridelectricity and/or diesel
generator. Adopting better
efficiency of diesel generator(new and design value) toensure net emission
reduction.

Diesel【After Project Implementation】
Displace grid and/or diesel
generated electricity by solar
power, and reduce diesel
consumption by optimizing theefficiency of diesel generator.

© Copyright 2017 KDDI Corporation. All rights reserved.

12

Calculation of Emission Reductions
1. Establishment of Reference Emissions【Before Project Implementation】

Electricity
Supply（kW/year)

Gridelectricity【After Project Implementation】

SolarPVτ
T*Diesel

Gridelectricity

T-τDiesel* T: Total hours of operation of BTS, τ:Hours for which grid electricity is available The reference emissions are calculated based on the assumption that monitored
electricity at project BTS is supplied by grid and/or diesel generator with the patternwhich is observed before project implementation (time of supply and efficiency).
 Efficiency improvement of the diesel generator is not accounted for the sake ofconservative calculation, by adopting the efficiency of new diesel generator which isinstalled by the project.

2. Calculation of Project Emissions
 Project emissions are calculated on the basis of monitored grid electricity
consumption and/or diesel consumption at the project BTS after implementation of
the project, and CO2 emission factor of grid electricity and diesel.
© Copyright 2017 KDDI Corporation. All rights reserved.

13

Contribution to Sustainable Development
and Technology Replication Opportunities

TRIBRID System will contribute sustainable development ofIndonesia in terms of its economy and environment.
 Economy- Reduce economic burden of diesel consumption for the operation of mobile
tower in Indonesia.
- TRIBRID System consists of equipment from local suppliers, and so thedissemination of TRIBRID System will contribute to local industry andeconomy.

 Environment- Electricity consumption at mobile tower in Indonesia is 2,350million kWh*,and CO2 emissions are 1.88million* tCO2. TRIBRID System will contribute to
reduce negative environmental impact of mobile tower.

Technology replication opportunities

 TRIBRID System consists of equipment which can be supplied locally, andKDDI will provide training of technical skills for operations to local engineers
during the demonstration project.
 The number of mobile towers in off-grid and poor grid area are expected togrow. So, the dissemination ofthe technology is expected.

© Copyright 2017 KDDI Corporation. All rights reserved. *Source: Greening the Network: Indonesia market Analysis, IFC, GSMA, 201314** Green Power for Mobile, Dec 2014, GSMA© Copyright 2017 KDDI Corporation. All rights reserved.