SWSOLARNSE17 October 2025

Sterling and Wilson Renewable Energy Limited has informed the Exchange about Investor Presentation

Sterling and Wilson Renewable Energy Limited

October 17, 2025

BSE Limited Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai – 400 001

National Stock Exchange of India Limited Exchange Plaza, Bandra Kurla Complex, Bandra (East), Mumbai – 400 051

Scrip Code: 542760

Symbol: SWSOLAR

Sub.: Investor presentation on the Unaudited Standalone and Consolidated Financial results of Sterling and Wilson Renewable Energy Limited (“the Company”) for the quarter and half year ended September 30, 2025.

Ref.: Regulation 30 read with Part A of Schedule III of SEBI (Listing Obligations and

Disclosure Requirements) Regulations, 2015 (“Listing Regulations”)

Dear Sir/ Ma’am,

Pursuant to the Listing Regulations, please find enclosed herewith a copy of the Investor presentation on the Unaudited Standalone and Consolidated Financial results of the Company for the quarter and half year ended September 30, 2025.

Request you to take the same on records.

Yours faithfully, For Sterling and Wilson Renewable Energy Limited

Jagannadha Rao Ch. V. Company Secretary & Compliance Officer

Encl.: As above

Sterling and Wilson Renewable Energy Limited Regd. Office: Universal Majestic, 9th Floor, P. L. Lokhande Marg, Chembur (W), Mumbai - 400043 Phone: (91-22) 25485300 | Fax: (91-22) 25485331 | CIN: L74999MH2017PLC292281 Email: info@sterlingwilson.com | Website: www.sterlingandwilsonre.com

The future of solar energy is

Bright

STERLING AND WILSON RENEWABLE ENERGY LIMITED ONE OF THE LEADING SOLAR EPC AND O&M SOLUTIONS PROVIDERS IN THE WORLD

Investor Presentation – Q2 FY26 17 Oct 2025

Disclaimer

This presentation and the accompanying slides (the “Presentation”), which have been prepared by Sterling and Wilson Renewable Energy Limited (the “Company”), have been prepared solely for information purposes and is not a prospectus, disclosure document, placement document or other offering document under any law, nor does it form part of, and should not be construed as, any present or future invitation, recommendation or offer to purchase or sell securities of the Company or an inducement to enter into investment activity in any jurisdiction. No offering of securities of the Company will be made except by means of a statutory offering document containing detailed information about the Company. If there is any subsequent offering of any security of the Company, it will be made pursuant to separate and distinct offering documentation, and in such case the information in this Presentation will be superseded in its entirety by any such offering documentation in final form.

This Presentation has been prepared by the Company based on information and data which the Company considers reliable, but the Company makes no representation or warranty, express or implied, whatsoever, and no reliance shall be placed on, the truth, accuracy, completeness, fairness and reasonableness of the contents of this Presentation. This Presentation may not be all inclusive and may not contain all of the information that you may consider material. Any liability in respect of the contents of, or any omission from, this Presentation is expressly excluded.

Certain statements made in this Presentation may not be based on historical information or facts and may be “forward-looking statements” by reason of context, including those relating to the Company’s general business plans, planned projects and strategy, future financial condition and growth prospects, future developments in industry and competitive and regulatory environment. All forward-looking statements are based on judgments derived from the information available to the Company at this time. Forward-looking statements can be identified by terminology such as such as “potential,” "opportunity," “expected,” “will,” “planned,” "estimated", "continue", "on-going" or similar terms.

Forward looking statements are based on the current beliefs and expectations of the Company regarding future events, and are subject to various risks and uncertainties, many of which are difficult to predict. Actual results may differ materially from anticipated results due to factors beyond the Company’s control. Such risks and uncertainties include, but are not limited to, challenges to intellectual property, competition from other products, adverse litigation or government action, and changes to laws and regulations applicable to our industry. This Presentation also contains certain financial and operational information relating to the Company that is based on management estimates. These estimates are based on management's past experience and subjective judgment, and the manner in which such estimates are determined may vary from that used for the preparation and presentation of similar information provided by other companies engaged in the sector in which our Company operates. Neither the Company nor its affiliates or advisors or representatives nor any of their respective affiliates or any such person's officers or employees guarantees that the assumptions underlying such forward-looking statements or management estimates are free from errors nor does either accept any responsibility for the future accuracy of the forward-looking statements contained in this Presentation or the actual occurrence of the forecasted developments.. The risks and uncertainties relating to these statements include, but are not limited to, risks and uncertainties regarding fluctuations in earnings, our ability to manage growth, competition (both domestic and international), economic growth in India and abroad, ability to attract and retain highly skilled professionals, time and cost over runs on contracts, our ability to manage our international operations, government policies and actions, regulations, interest and other fiscal costs generally prevailing in the economy. The Company does not undertake to make any announcement in case any of these forward looking statements become materially incorrect in future or update any forward looking statements made from time to time by or on behalf of the Company.

2

Contents

Company Overview

Business Overview

Market Opportunity

Beyond Business

Our Journey

Track record

Financial Highlights

04

07

15

26

05

12

18

3

About us

| WHO WE ARE

Leading Solar EPC and O&M Solutions Provider

We offer Design, Detailed Engineering, Procurement, Construction, Installation, Commissioning and Operations & Maintenance services under turnkey EPC and BoS (Balance of System) solutions for utility-scale, and floating solar power projects. We also offer solar plus storage solutions.

Market Leader

Leading Solar EPC solutions provider in the world

E C N E L L E C X E

I

L A N O T A R E P O

EPC Portfolio 24.4 GWp

O&M Portfolio 9.1 GWp

Global Manpower 3,017

I

I

N O T N G O C E R L A B O L G

EPC and O&M of Abu Dhabi 1,177 MWp One of the world’s largest single location PV plant

Regional presence across 28 countries Significant cost benefit and timely execution

E S U O H R E W O P

C

I

T S E M O D

EPC and O&M 3GW+ in 2 projects Executing one of India’s largest PV plants at Khavda, Gujarat

Executing one of India’s largest BESS projects

Leading Solar O&M player globally

Leading Solar EPC

player in India

End-to-end “concept to commission” solar EPC

4

Journey

2013 Completed our first turnkey EPC project

Started international solar operations

2016 Diversified into Rooftop Solar

Started third- party O&M services

2011 Ventured into solar EPC business

2015

Recognized as the largest Indian solar EPC player

Largest single- axis tracker plant in India (60 MWp)

2018

Expanded operations in Australia by acquiring a controlling stake in GCO Electrical Pty Ltd

2020

Ranked 2nd largest O&M player in the world by Wood Mackenzie

2022

Reliance New Energy acquired 40% stake in Sterling and Wilson Renewable Energy Limited

Awarded one of the largest domestic EPC contract of 1.6 GW by NTPC

2024

SWREL closed five marquee project wins totaling over INR 2,400 crore

Achieved highest unexecuted order value in history of company of more than INR 10,500 cr in October 2024

2017 Demerger of S&W Solar from S&W Group

Incorporated a subsidiary in Spain

Started operations in USA

Bagged world’s largest single location solar EPC project in Abu Dhabi

2019

Listed on BSE and NSE

Commissioned our first floating solar project of 450 kWp

Ranked No. 1 solar EPC in the world by IHS Markit

2021 Expanded our offerings to include Hybrid Energy, and Energy Storage

2023 Achieved a second consecutive mega order (1,500 MW) from NTPC

Raised INR 1,500 crore through QIP route

2025 Ventured into Wind EPC

Solar O&M portfolio crosses 9 GW

5

Accreditations

| AND AWARDS

Demonstrating Business Excellence and Industry Leadership

OHSSAI Safety Award awarded at the 9th Annual HSE Excellence & ESG Global Award 2024

Khavda RE Project awarded Best FQA Lab Facility in RE Cluster at All India QA Meet 2024 of NTPC Limited

Recognized as a Top Brand EPC 2025 by EUPD Research

The Economic Times Energy Leadership awarded SWREL EPC Company of the Year 2023

SWREL bagged OHSSAI Occupational Health and Safety Award (GOLD) in the Power Sector in the year 2023

SWREL received Power Generation Project of the Year 2021

AFSIA’s Utility Scale Project of the Year bagged by SWREL in 2020

Awarded the Leading EPC Company by RenewX

Utility Scale Project of the Year by MESIA awarded to SWREL in 2020

6

Offerings

| SOLUTIONS AND SERVICES

01

Utility Scale Projects

03

Floating Solar

02

Hybrid & Energy Storage

04

Operation & Maintenance (O&M)

Turnkey EPC solutions for utility-scale projects

Sterling and Wilson Renewable Energy offers a range of turnkey and Balance of System (BoS) solutions for utility-scale, and floating solar power projects. The company also offers solar plus storage solutions, and Hybrid projects including Wind.

Our turnkey EPC solutions comprise design, engineering, procurement, construction, project management, testing, supply, installation and commissioning to operation and maintenance and connecting the solar power project to the grid.

All project design and execution services excluding the procurement of modules and components are offered as part of the BoS solutions.

Our Expertise

Utility Scale

• Rich experience with various module technologies • • • Bifacial Module (Experience with Robotic Cleaning)

Single-axis tracker string inverter Solar PV+ storage & Floating Solar

Utility Scale

Solar EPC

8

Fully Integrated Battery Energy Storage Solution

01

02

03

04

05

06

BATTERY MODULE + BMS

BATTERY RACKS & CONTAINER

PCS + MV STATION

EMS & HYBRID CONTROLLER

INSTALLATION & COMMISSIONING

OPERATIONS & MAINTENANCE

Long Term Supply Agreement with leading Battery Manufacturers

In House Containers Strong CFD and CAE Internal Design. ISO certified Process

Decade long MV side experience. Strong Service Level Agreements

Strong Partnerships with leading solutions providers

24.4 GWp of Installation & Commissioning experience in 28 countries.

9.1 GWp of Solar O&M Experience 450+ O&M Manpower

1. Analyzing the usage and load profile requirement of the BESS system.

1. Selecting the type of racks and number of Modules per rack.

2. Choosing the right

Chemistry & Battery make.

3. Reaffirming the

Degradation, Efficiency etc., from the suppliers

2. Container Design and

CFD analysis for HVAC system.

3. Firefighting, Lighting, Electrical, DC panels, Control Cabinets within the container

1. Choosing the optimum size of the PCS, MV Station to reduce the BESS footprint.

2. Asserting the optimum design temperature for the MV design.

3. Estimating the Power Factor requirements .

1. Studying the grid requirements.

2. Designing the functional requirements of the EMS/Hybrid Controller.

3. Designing a common

Power Plant Controller for the Solar and BESS side.

1. Exploring all the possible ways to reduce the Installation and Commissioning Cost of BESS.

2. Utilizing the common subcontractors, tools & machineries to reduce the cost

1. On Site & Off Site 24*7 monitoring services.

2. Long Term O&M

Contract.

3. Support during the

augmentation in future to reduce the initial capital cost

9

Floating Solar – Ushering in the next wave of sustainability

Floating solar plants have an advantage over ground-mounted solar plants owing to their negligible land requirement as these plants can be installed on reservoirs, industrial pools or even small lakes.

We offer turnkey EPC for floating solar PV plants. Our Services include:

• Anchoring & mooring installation • Project management & planning • Module/Equipment floating structure installation • Maintenance manual & design book issuance • Bathymetric study as per the terms & geotechnical assessment study

Floating Solar Solutions

We have constructed India’s first floating Solar Project - 455 kWp in Kerala, India

Solar EPC

10

India’s

1st

Floating Solar Project

O&M – Maintaining relationships that last Global Operations & Maintenance (O&M) portfolio, and strong expertise working with the leading equipment manufacturers and constructors. Over seven years experience in the O&M of solar power stations – meticulously caring for the useful life of assets, maximizing profitability, streamlining performance and availability, and minimizing consumption and operating costs

Centralized Monitoring System • Single Platform to Monitor Solar, Wind, Storage & Hybrid • Optimized O&M Cost Optimized frequency of plant maintenance & module cleaning • Accessibility via Mobile App & Web • • Artificial Intelligence & Machine learning

Real-time & Predictive Analytics Optimal generation with analytics

Solar O&M Best Practices Mark

✓ Our processes meet the highest international standards ✓ We follow the best practices towards O&M of solar projects ✓ We practice standard exhaustive checklist provided by Solar Power Europe and scored more than the threshold level

Our Expertise • Drone Thermography • IV Curve Diagnostic • Mechanized and Robotic Cleaning • Strong Analytics and Predictions • In-house Cable Fault Locating System • Computerized Maintenance Management System

Mobile Testing Facility • On-site flash testing of PV modules (Sun Simulator/ Flash Tester A+A+A+ class, Best in class) • On-site EL testing of PV modules (Electroluminescence Tester, On site EL tester, Best in class) • On-site thermography of PV modules (Infrared Imaging, Best in class) • On-site I-V array testing of strings / modules (Best in class)

O&M Manpower Strength •

544+ in-house team with expertise in advanced technologies

O&M

Asset Management

2Q FY2026

9.1 GW

FY 2018

1.8 GW

O&M Portfolio has grown ~5X in 7 years * Total O&M capacity as of Sep 2025

11

On a Strong Footing

| TRACK RECORD

Strong Execution Record

Commissioned: 11.6 GW Under-Construction: 12.8 GW

Annual Global Installation

Strong Balance Sheet March 25 Net worth: INR 995 cr March 25 Net D/E: 0.18x BBB+ / Stable (Credit Rating) *

Core of Project Execution

Global Manpower Strength: 3,017

Over 40 projects under execution

New Order Inflows (INR Cr)

Revenue (INR Cr)

India Focused Order Book ^

6,023

7,051

4,387

FY23

FY24

FY25

* As of September 2025; ^ As of Mar 2025

6,302

x

3,035

FY24

FY25

2,015

FY23

International, 15.5%

India, 84.5%

12

Why Us

| WHAT DIFFERENTIATES US

Expeditious Quick Decision Making & well-defined internal processes leading to timely execution

Experience Strong Track Record of executing complex & large-scale EPC projects leading to high customer retention and repeat business

Talent Pool Strong in-house Design and Engineering team providing customized solutions

Cost Effective Leveraging the Low-Cost India Base for global execution providing cost competitive solutions

Global Presence One of the only Global Pure-Play Solar EPC players with a significant presence and operational experience across geographies

Strong Relationships A Bankable Player with strong relationships with customers and other key stakeholders

13

Our Presence

| ACROSS THE GLOBE

Europe 266 MWp

UK

Spain

Italy

Jordan

Kazakhstan

USA 455 MWp

Morocco

Egypt

UAE

Vietnam

USA

Mexico

MENA 1,969 MWp

Mali

Nigeria

Saudi Arabia

Thailand

Oman

Kenya

Tanzania

Zambia

India

India 19,264 MWp

Singapore

Southeast Asia 323 MWp

Philippines

Latin America 575 MWp

Chile

Argentina

Namibia

South Africa

Rest of Africa 610 MWp

Australia

Australia 1,113 MWp

New Zealand

14

Offices in 28 Countries

Projects in 20 Countries

As of September 30, 2025

Market Opportunity

Solar Market Outlook

| INDIA SOLAR INSTALLATIONS GROWTH TRAJECTORY REMAINS STRONG

PROJECTED ANNUAL ‘UTILITY-SCALE + COMMERCIAL’ PV INSTALLATIONS IN INDIA (GW)

58.6

50.6

42.4

44.9

43.7

37.9

31.7

12.8

2023

2024

2025E

2026E

2027E

2028E

2029E

2030E

Source: BNEF

16

Solar Market Outlook

| CORE INTERNATIONAL MARKETS’ OUTLOOK IS ALSO PROMISING

PROJECTED ANNUAL ‘UTILITY-SCALE + COMMERCIAL’ INSTALLATIONS IN EMEA (GW)

63.9

66.6

60.7

59.7

56.8

57.2

55.7

47.4

9.4

12

22.9

25.5

18.1

27.1

28.2

31.9

2023

2024

2025E

2026E

2027E

2028E

2029E

2030E

Europe

Middle East & Africa

Source: BNEF

17

Financial Highlights | Q2 FY 2026

Financials

| KEY HIGHLIGHTS FOR Q2 FY26

REVENUE (INR CR)

GROSS PROFIT (INR CR)

70% YoY

1,762

1,749

50% YoY

205

156

1,031

104

Q2FY25

Q1FY26

Q2FY26

Q2FY25

Q1FY26

Q2FY26

Operational EBITDA (INR CR)

PAT (INR CR) *

170% YoY

123

62

23

9

Q2FY25

39

Q1FY26

Q2FY26

Q2FY25

Q1FY26

Q2FY26

* Exceptional one-time write-off of ~INR 580 cr in Q2FY26 due to adverse arbitration ruling

19

-478

Financials

| KEY HIGHLIGHTS FOR Q2 FY26

CURRENT UOV

UOV BY REGION

9,096

9,287

International 16.1%

MAR 2025

CURRENT

ORDER INFLOW YTD

BID PIPELINE – FY26

South Africa 27%

INR 3,775 cr

India 73%

India, 83.9%

India

International

16%

25.4 GW

84%

20

Financials

| BALANCE SHEET UPDATE

DEBT LEVELS (INR CR)

1194

902

742

178

Gross Debt

Net Debt

Mar-25

Sep-25

KEY DEVELOPMENTS IN 1H FY26

• New term loan of INR 475 crore from IREDA

Ratings of Working Capital facilities and Term Loans upgraded to BBB+ with Stable Outlook in June 2025 by Infomerics Ratings

Improved ratings helped to enhance / tie-up new working capital facilities, and reduction of LC / BG charges

Fresh sanctions for working capital facilities from 3 new banks

NET WORKING CAPITAL (INR CR)

RECURRING OVERHEADS (INR CR)

Q2FY25

Q1FY26

Q2FY26

94

-348

-279

81

83

-732

Q2FY25

Q1FY26

Q2FY26

21

Financials

| CONSOLIDATED PROFIT & LOSS – Q2 FY26

INR Crore

Q2FY26

Q2FY25

Q1FY26

FY2025

REVENUE BY SEGMENT (INR CR)

GROSS PROFIT BY SEGMENT (INR CR)

Revenue from Operations

Gross Profit

Gross Margin %

EBITDA

EBITDA Margin %

PBT

PBT Margin %

PAT

PAT Margin

1,749

156

8.9%

(470)

NM

(504)

NM

(478)

NM

1,031

104

10.1%

51

4.9%

20

1.9%

9

0.8%

1,762

205

11.7%

102

5.8%

75

4.2%

39

2.2%

6,302

638

10.1%

276

4.4%

163

2.6%

86

1.4%

O&M 64

O&M 15

International EPC 45

International EPC 492

Domestic EPC 1,193

Domestic EPC 96

• Revenue has grown 70% YoY in Q2, aided by higher execution pace in Domestic and International EPC projects. 1HFY26 revenue at INR 3,510 crore compared to 1HFY25 revenue

of INR 1,946 crore (up 80% YoY)

• 1HFY26 Gross margins were 10.3% compared to 10.1% for FY25. 2QFY26 Gross margins were lower at 8.9% due to commencement of revenue recognition in high value turnkey

domestic orders including module supply, which are lower margins than BOS projects and impacted reported domestic EPC gross margins

• Company incurred a P&L write-off due to adverse arbitration ruling in US subcontractor case (~INR 580 cr), which led to consolidated EBITDA loss of INR 470 crore in Q2FY26

22

Financials

| CONSOLIDATED PROFIT & LOSS – 1H FY26

Key Provisions / Write-off in Consolidated Accounts

• US sub-contractor matter (INR 580.1 crore)

• During the quarter, the Arbitral Tribunal passed an interim award whereby the claims that were considered recoverable of INR 485.64 crore (USD 55.06 million) by

a wholly-owned subsidiary were dismissed and the subcontractor has been granted a claim amount of INR 56.80 crore (USD 6.44 mill ion) plus interest

• Accordingly, during the quarter, the Group has charged off INR 580.10 crore (including legal cost) in the Statement of Unaudited Financial Results for the quarter

and six months ended 30 September, 2025 and classified the same as an Exceptional item

Key Provisions / Write-off in Standalone Accounts

• The Company's investment in a subsidiary, loans given, along with accrued interest thereon and other receivables aggregated to INR 3,196.76 crore

a) Considering the unfavourable outcome arising from the arbitration order resulting in loss of amounts that were considered recoverable and the outflows towards honouring settlement with a subcontractor, INR 599.70 crore are considered non recoverable from the wholly owned subsidiary and hence, the Company has written off the loans to that extent

b) Further, considering the uncertainty with respect to the projected cash flows expected from the revenue contracts where Letters of Intent or Memorandum of Understanding have been signed, due to expected revisions to key contract terms and revised cashflows considered for the refund of encashed bank guarantees, recovery of remediation costs incurred on projects and amounts recoverable under the indemnity agreement with the Promoter Selling Shareholders, INR 2,038.72 crore are considered doubtful of recovery from the wholly owned subsidiary, for which an impairment provision has been made during the quarter. Accordingly, the Company has impaired the loans by INR 1,293.68 crore, interest accrued by INR 344.43 crore, other receivables by INR 156.20 crore and Investments by INR 244.41 crore

The said amounts under (a) and (b) aggregating to INR 2,638.42 crore have been classified under Exceptional Item in the Statement of Unaudited Financial Results for the quarter and six months ended 30 September 2025

23

Financials

| CONSOLIDATED BALANCE SHEET – September 2025

INR Crore

Sep-25

Mar-25

Breakdown of Net Working Capital (INR Crore)

Sep-25

Mar-25

Liabilities + Shareholders’ Equity

Shareholders Equity

Bank Borrowings

Other Liabilities

Total Liabilities + Shareholders’ Equity

Assets

Fixed assets (including right to use assets)

Cash & Bank balance (including fixed deposit)

Other assets

Total Assets

460

1,194

3,205

4,859

41

452

4,366

4,859

995

902

3,733

5,630

46

724

4,860

5,630

Current Assets

Inventories

Receivables (including unbilled)

Receivable days

Advances to suppliers

Current Liabilities

Trade payables

Payable days

Advances from Customers

Net Working Capital

2,704

2

2,520

131

182

2,983

2,215

128

768

(279)

2,941

3

2,582

150

356

3,543

2,750

177

793

(602)

• Net debt has increased due to higher payment of vendors from the fresh loan taken at end of Q4FY25 and in 2QFY25

• Net working capital continues to remain negative at INR 279 crore as at September 2025

24

Corporate

| SOCIAL RESPONSIBILITY

As a responsible organization, we strive to ensure the well being of all our stakeholders, by placing sustainability at the heart of everything we do.

OHSSAI Safety Award 2024

s e i t i

v

i t c A R S C r u O

Inclusive Learning Environment

Women Economic Empowerment

Digital Inclusion

Industry Ready Workforce

OUR PROCESSES SUPPORT

• Outreach • Growth • Encouragement • Collaboration • Engagement

• Communities • Employees • Regulators • Vendor Partners • Environment

25

For further information, please contact:

Company :

Investor Relations Advisors :

Sterling and Wilson Renewable Energy Limited

Strategic Growth Advisors Private Limited

CIN: L74999MH2017PLC292281

CIN: U74140MH2010PTC204285

Mr Sandeep Mathew Head – Investor Relations

Email: ir@sterlingwilson.com

www.sterlingandwilsonre.com

Mr Jigar Kavaiya / Mr. Parin Narichania

+91 9920602034 / +91 9930025733

Email: jigar.kavaiya@sgapl.net / parin.n@sgapl.net

www.sgapl.net

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