Supplementary Materials for theSummary of Financial Reports 1Q,
FYE June 30, 2023
November 14, 2022
Nippon Koei Co., Ltd.
IR Inquiries: Corporate Communication Office c-com@n-koei.co.jp
This presentation is provided for informational purposes only and is not intended to solicit any action. Presentation in the materials(including forecasts of financial results) is based on credible information available at the time of publication and certain assumptions
Nippon Koei believes to be reasonable. Various factors may cause actual results to differ from the projected numbers or otherexpectations implied or expressed in this presentation.
11Q Results for FYE June 30, 2023
Both orders and revenue increased year on year. Profit increased due to the recordingof the gain on the sale of business investments.
(Million yen)FYE June 2022
1Q Results

FYE June 2023
1Q Results

YoY Change
Amount%Orders25,31931,8366,516

125.7%

Revenue

23,96026,7822,821

111.8%

Gross profit

6,418

7,103

685

110.7%

Operating profit

-320

1,405

1,726

-Profit before tax

-209

1,555

1,764-Profit attributable to owners of parent-264

584849- Due to solid performance in the Urban & Spatial Development and Energy Business, orders increased year on year.
 Revenue increased year on year due to steady processes in domestic projects of the Consulting Business.
 Operating and quarter profits increased due to energy-related investments, such as the sale shares of affiliatedcompanies, security investment profits, etc.
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Results by Business Segment■FYE June 2022,1Q■FYE June 2023,1Q

YoY Change

FYE June
2022 1Q
ResultsFYE June
2023 1Q
Results

Orders25,31931,8366,516

125.7%Consulting

16,664

16,838174

101.0%(Million yen)Amount(Million yen)Orders%

16,664 16,838

Urban & Spatial Development

6,504

11,7955,291

181.3%

Energy

2,133

3,128

995

146.7%

Other

177255414.3%

Revenue

23,96026,7822,821

111.8%

Consulting

12,597

14,842

2,244

117.8%

Urban & Spatial Development

7,237

7,719

481

106.6%

Energy

3,925

3,991

66

101.7%

Other

199

229

30

115.1%

Operating profit

-320

1,405

1,726

-

Consulting-242-347-105-

Urban & Spatial Development154-157-311-

Energy

260

2,312

2,052

888.7%

Other-493-402

90-

11,795
6,504
2,133
Consulting

Revenue

Urban & Spatial Development

3,128

Energy14,842

12,597
7,237

7,719
3,991

3,925

Consulting

Urban & Spatial Development

EnergyOperating profit

2,312

260

154-242-347
Consulting-157
Urban & Spatial Development* Nippon Koei Urban Space Co., Ltd. (established by consolidating former Tamano Consultants Co., Ltd. and the Urban & Spatial Development Business of Nippon
Koei), its subsidiary Tamano Ecost Co., Ltd. and our consolidated subsidiary Nakaze Kamp Co., Ltd. changed their segment classification from the “ConsultingBusiness” to the “Urban & Spatial Development Business” from the fiscal year ending June 2023. Therefore, the segment information for the fiscal year ending
June 2022 is provided based on the new reportable segment classification.

Energy3Overview by segment
Consulting Business• Orders:• Revenue:• Operating profit:

Orders increased year-on-year due to orders of overseas projects, although domestic orders were slightly inactive.
Increased due to steady progress of domestic on-hand projects.
Decreased mainly due to increased overseas travel and internal administrative expenses.

Urban & Spatial Development Business• Orders:• Revenue:• Operating profit:

Increased year on year mainly due to the contribution of an additional large-scale order received from BDP in the UK.
Increased as orders received from BDP(UK) and Quadrangle(Canada) in the previous fiscal year progressed steadily.
Decreased due to an increase in general administrative expenses related to the organizational consolidation of
Nippon Koei Urban Space Co., Ltd. and prior investments to build a foundation for the business expansion of BDP.

* The actual exchange rate in 1Q of FYE June 30, 2023: ￡1=161.97 yen (assumed exchange rate for FYE June 30, 2022: ￡1=151.48 yen)

Energy Business• Orders:• Revenue:• Operating profit:

Increased year on year due to large-scale orders of substation control systems, solid orders for power-related
products and equipment, etc.
Increased due to the progress of the large-scale renovation of power plants, orders received from government
agencies.
Increased due to the share sale of PT. ARKORA HYDRO, an affiliated company before, and security investment profit,etc. (approximately 2.5 billion yen), although sales of the dam monitoring control systems decreased year-on-year.
4FYE June 2023 Forecast
No changes have been made to the forecast for the entire FYE June 2022 period.
Orders, revenue and profits increased from the previous fiscal year. Aim to achieve record-high revenue and profits.
YoY Change

FYE June 2022
ResultsFYE June 2023
Plan

131,166

140,000

8,833

106.7%

Consulting Business

84,55185,000448

100.5%

Urban & Spatial Development Business

32,14740,0007,852

124.4%

Energy Business

14,34316,0001,656

111.6%

130,674

145,000

14,325111.0%

Consulting Business

75,00081,5006,499

108.7%

Urban & Spatial Development Business

36,09140,0003,908

110.8%

Energy Business

18,79922,5003,700

119.7%

783

1,000

216

127.7%

9,065

11,3002,234

124.6%

Consulting Business

7,971

9,200

1,228

115.4%

Urban & Spatial Development Business

2,599

2,800

200

107.7%

Energy Business

1,290

2,400

1,109

186.0%

Real Estate Leasing and Other-2,796-3,100-303-Profit attributable to owners of parent

6,579

6,700

120

101.8%

ROE

8.8%

8.5%

-0.3%

(Million yen)Orders

Revenue

Real Estate Leasing and OtherOperating profit

Amount* Nippon Koei Urban Space Co., Ltd. (established by consolidating former Tamano Consultants Co., Ltd. and the Urban & Spatial Development
Business of Nippon Koei), its subsidiary Tamano Ecost Co., Ltd. and our consolidated subsidiary Nakaze Kamp Co., Ltd. changed their segmentclassification from the “Consulting Business” to the “Urban & Spatial Development Business” from the fiscal year ending June 2023. Therefore, thesegment information for the fiscal year ending June 2022 is provided based on the new reportable segment classification.

%5Project introduction (Consulting Business)
Tohoku region - Investigation improvement of dam operations
ClientProjectoverview

River Management Section, River Department, Tohokuchihoseibi Bureau-MLIT
 For existing dams, advanced operation of reservoirs by utilizing various weather
forecasts is a challenge.
 In this project, to enhance reservoir operation (enhancing the renewable energy
while ensuring and enhancing the flood control function) by utilizing weather
forecast, we examined how to create and implement procedures for individualdams and revise the operation rules and operation trial guidelines (draft) based on
the case study of dams directly managed by the Tohoku region.
 In the future, for the existing dams across the country to contribute to action forheavy rain caused by seasonal rain fronts, typhoons, etc., and enhancerenewable energy, we are going to develop a study project on the feasibility of the
full-scale advanced operation.

Forecast graphUtilizing satellite data Infrastructure fluctuation monitoring service began
Businesspartner

SKY Perfect JSAT, ZenrinProjectoverview

 In November, we released LIANA (Land-deformation and Infrastructure ANAlysis),a service that monitors changes in infrastructure over time with high accuracy
using satellite data.
 LIANA is one of the products provided in the “Satellite disaster prevention
information services” announced by the three companies in 2020, and is expected
to be applied to soil structures such as slopes and embankments owned bycorporations and local governments, roads, reclaimed land, etc.
 By using satellite images, it will be possible to screen a wide area of several tensof kilometers square, which could not be grasped by surveying alone, and it will
also be possible to reduce the cost that has been incurred in maintenance andinspection, in addition to conducting preventive maintenance.

Conceptual image of the system
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Project introduction (Consulting Business)
Northern Vietnam - Strengthening Safer Crop Value Chains ProjectClientProjectoverview

Japan International Cooperation Agency (JICA)
 In Vietnam, while the demand for safe food is increasing in association with economic
growth, the use of pesticides and chemical fertilizers, etc., is increasing. Therefore, ensuring
the safety of agricultural products is a national issue.
 Since 2010, JICA has been building a production process management system (Phase 1)
and demonstrating the production and sale of safe crops based on market needs (Phase 2).
Nippon Koei oversaw the second and third phase.
 In this project, the third phase, we help the Vietnamese government independently promote
safe crops to develop human resources for agricultural extension. We also help improve thesafe crop production and management capabilities of agricultural cooperatives, strengthen
cooperation among value chain stakeholders and strengthen the policy implementation
capacity to ensure the safety of agricultural products.

Staff conducting a residual pesticide testIndia - Construction supervisory of high-speed railroad track and vehicle
ClientNational High Speed Rail Corporation Limited (NHSRCL) *Yen loan funds are provided by JICA

Projectoverview

 This is a three-company joint venture (JV) of Japan International Consultants forTransportation, Nippon Koei, and Oriental Consultants Global to supervise the constructionof tracks, vehicles, railway yards, maintenance vehicles, and training simulators for India’s
first high-speed rail line to introduce the Japanese bullet train system.
 For eight years until 2030, we will supervise construction work, vehicle procurement, etc.,
carried out by Indian and Japanese contractors.
 Since 2016, the JV has been carrying out detailed design business activities and trying hardto promote this project. It has done so by creating design drawings and specifications andtender documents, supporting bidding, doing construction supervisory business activities fortraining facilities, and doing advisory business activities for civil engineering designs at theconstruction stage, etc., to continue contributing to the development of public transportation.

Contract-signing ceremony7

Project introduction (Urban & Spatial Development Business)
Feasibility study of utilizing 3D city model for the former stationed forces base
ClientOkinawa General Bureau, Cabinet Office

ProjectoverviewAt the site for stationed forces in Okinawa, which is due to be returned from2024 onward, we examined the possibility of utilizing 3D city, considering theusing "Project PLATEAU" from MLIT to promote the formulation of site use
plans and negotiations with landowners.
We organized the data, researched the software used, and conductedinterviews with PLATEAU and related local governments. Based on these, weput together viewpoints of 3D city model utilization in the use of the site, thedata utilization method, sample models, and procedures and createdreference material for activities in the related municipalities.
Image of the site utilization plan (Naha New Downtown District)

A series of research and design for Ghibli Park development
ClientAichi Prefecture (Ghibli Park Promotion Section, Owari Construction Office)Projectoverview
Park redevelopment and design work for the main areas in the prefectural Ai
Chikyuhaku Kinen Koen Park with the opening of Ghibli Park supervised byStudio Ghibli.
We are in charge of the space that connects each Ghibli park area from thenorth entrance in front of the Ai Chikyuhaku Kinen Koen Park Station, which isa prologue to visitors getting a sense of the world of Ghibli. We designed it
while discussing in-depth designs with the orderer and Studio Ghibli for thelarge space at the north exit and the landscape gate where cultural assets inthe city were relocated and reconstructed, among others.
We carried out designs for redevelopment through public-private partnershipusing the ECI method (early contractor involvement, a technique in which thebuilder participates from the design stage to reduce the construction cost andshorten the construction period) for the first time as a park development
project in the prefecture.

Front north exit of Ghibli Park8

Project introduction (Urban & Spatial Development Business)
BDP NY Studio opened

BDP officially opened its first U.S. studio in New York in September
2022.

BDP has carried out multiple architectural designs in the North
American area and maintained high profitability since the acquisition ofQuadrangle, a Canadian company that joined the group in 2019. We
aim to further expand our business in the United States with theopening of this New York studio.

We will provide multi-disciplinary technologies with global expertise toestablish ourselves as one of the world’s most influential architecturaland engineering consulting firms.

Projectoverview

Construction of the New Children’s Hospital in Dublin, Ireland

Projectoverview

The New Children’s Hospital project in Ireland is the biggest healthcare
project in Ireland, which BDP Dublin Studio is in charge of design.

Construction is underway as a project integrating a children’s hospital,
pediatric research, and an innovation center.

The oval ward pavilion in Europe’s largest rooftop garden and thefloating garden in the middle of the building are the greatest features ofthe hospital.

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Project introduction (Energy Business)
Phnom Penh metropolitan area - Design and supervise construction to expand and maintainpower transmission and distribution network

ClientElectricité Du Cambodge
Project
overview

A project to increase the capacity of power transmission and distribution
facilities in the Phnom Penh metropolitan area and improve the power
supply stability to contribute to Cambodia's economic development.
Two substations, including an underground transmission line (12 km) andan underground distribution line (20 km), were newly installed in the citycenter.
We designed a compact substation to fit into the limited site in thecapital's center. We planned and supervised construction, ensuring theshort construction period, alleviation of traffic congestion, and safety ofpedestrians and vehicles in underground line burial on public roads after
the start of operation.

Inside the substation building

Belgium - Pre-operation test for the Ruien energy storage station (25/100 MWh)
ClientIn-house investment
Projectoverview

In Europe, where the ancillary service (frequency adjustment, demandadjustment) market is well developed, we promote power storage
projects, acquire knowledge of construction and operation and deploy
them ahead of the Japanese market.
Construction of the storage battery (25 MW output, 100 MWh capacity)
has been completed, and pre-operation tests were started in late October
2022. It is possible to output 25 MW continuously for 4 hours. This
capacity is equivalent to the daily power consumption of 8,300 ordinary
households in Japan.
Revenue in the power storage business is drawn from providing anancillary service for system operators and doing arbitrage transactions tocharge electricity when electricity is cheap and discharge it when it isexpensive in the wholesale market.
The trial run is scheduled to be conducted until early December 2022. We
aim to start operation in mid-December.

Construction site of Ruien power storage station

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Appendix.

11

Change of Business Segments (From FYE June 2022)
For further cooperation, previous five business segments changed into three business segments.
Up to FYE June 2021 (before)
Segment

Major group companies

DomesticConsultingTamano Consultants Co., Ltd.
Nippon Civic Consulting Engineers Co., Ltd.
El Koei Co., Ltd.

InternationalConsulting

Koei Research & Consulting Inc.
Nippon Koei Latin America-Caribbean Co., Ltd. NIPPONKOEI LAC, INC.
NIPPON KOEI INDIA PVT. LTD.
NIPPON KOEI VIETNAM INTERNATIONAL CO., LTD.
PHILKOEI INTERNATIONAL, INC.
PT. INDOKOEI INTERNATIONALMYANMAR KOEI INTERNATIONAL LTD.

Urban & Spatial
Development
Transfer to NK Urban
Development Dept.
FYE 21/6

PowerEngineering
EnergyBDP HOLDINGS LIMITEDBUILDING DESIGN PARTNERSHIP LIMITEDQUADRANGLE ARCHITECTS LIMITEDKisho Kurokawa Architect & Associates

From FYE June 2022 (after)
Segment

Major group companies

Consulting

Tamano Consultants Co., Ltd.
Nippon Civic Consulting Engineers Co., Ltd.
Transfer to Urban &EL Koei Co., Ltd.
Spatial Development in
Koei Research & Consulting Inc.
FYE 23/6
Nippon Koei Latin America-Caribbean Co., Ltd. NIPPONKOEI LAC, INC.
NIPPON KOEI INDIA PVT. LTD.
NIPPON KOEI VIETNAM INTERNATIONAL CO., LTD.
PHILKOEI INTERNATIONAL, INC.
PT. INDOKOEI INTERNATIONALMYANMAR KOEI INTERNATIONAL LTD.
PT. CIKAENGAN TIRTA ENERGIUrban & SpatialDevelopment

BDP HOLDINGS LIMITEDBUILDING DESIGN PARTNERSHIP LIMITEDQUADRANGLE ARCHITECTS LIMITED
Kisho Kurokawa Architect & Associates

Koei System Inc.
KOEI Energy Co., Ltd.
NIPPON KOEI ENERGY EUROPE B.V.
PT. CIKAENGAN TIRTA ENERGIIRONMONT HYDRO PTE. LTD

EnergyKoei System Inc.
KOEI Energy Co., Ltd.
NIPPON KOEI ENERGY EUROPE B.V.
IRONMONT HYDRO PTE. LTD
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