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HCH.V ·

Huasco Water A Water Supply Business for the Growth and Development of the Southern Atacama, Chile

Corporate Updates

1COMPANY PRESENTATION |

www.hotchili.net.au

Huasco Water

A Water Supply Business for the Growth and

Development of the Southern Atacama, Chile

ASX: HCH

TSXV: HCH

OTCQX: HHLKF

A

NEW

WATER

SUPPLIER

IS

COMING

2COMPANY PRESENTATION |

www.hotchili.net.au

Huasco Water

• New Joint Venture water company

established. Hot Chili (80% interest) & CMP1

(20% interest)

• Long lead-time items secured, including a

granted maritime water concession to

extract seawater and a permit for coastal

land access

• Transfer of all water assets to Huasco Water

in-progress

• International Engineering firm ILF appointed

to complete regional Water Supply Business

Case Study2 (PFS-Engineering) with targeted

completion in H1 2025

• Water off-taker and joint infrastructure

partnership discussions advancing

Hot Chili’s Water Business is the potential

solution to unlocking copper supply in

the Atacama

1 CMP refers to Compañía Minera del Pacífico

Huasco Water plans to construct a multi-user water network in

Southern Atacama region of Chile3

2 Will be referred to as “the PFS” or “the Study” through this presentation

3 See Announcement ‘Hot Chili Launches New Water Company - Huasco Water’ dated 08 July 2024

Proposed Sea Water Pipeline Route

Proposed Desalinated Water Pipeline Route

3COMPANY PRESENTATION |

www.hotchili.net.au

An integrated team brings vision and expertise to the Huasco Water Project

Engineering

Finance, Investor &

Partner Relations

Customer & Market

Engagement

Regulatory &

Stakeholder

Executive Director

Christian Easterday

Project Consultant

Martin Ridley

Charles Marcus Consult.

Delivery Director

Grant King

Lead

Jose Silva

Lead

Jose Silva

Lead

Christian Easterday

Lead

Marcelo Hernando

Engineering Advisory

Alvaro Hernandez

Paillahuinte

Engineering Consultancy

ILF

Marine Consultancy

PRDW

Legal Advisory

Juan Francisco Sanchez

Valdivia Legal

Environment

Cristobal Julia

Legal Advisory

Andrew Newbery

Gowling WLG

Executive Director

Jose Silva

Executive Sponsor

Claudia Monreal

HW Board

Project Team

HW Management

Huasco Water Employee

External Consultant/Advisor

4COMPANY PRESENTATION |

www.hotchili.net.au

Potential Customers Considered in

Study1

Basis of Study - Water Demand (L/s)1

Preliminary Feasibility Study Scoping Study3

Stage 1 - Year 1 Stage 2 - Year 3 Stage 3 - Year 23+

Seawater Costa Fuego 600 600 -

Seawater Total 600 600 -

Desalinated

Water

Huasco Valley Communities - 100 100

CMP - 200 200

Nueva Union Relincho - 740 1,340

La Fortuna - 100 100

ATEX - - 400

Other 165 165

Desalinated Water Total - 1,305 2,305

Huasco Water – Conceptual Basis of Study1

Proposed three-stage approach2 aligned with Costa Fuego development plan

2 Further detail of staged approach included in Appendix slides 9 to 11

3 Stage 3 study work will only be completed at a Scoping Study level, reflecting an appropriate level of investment to inform decisions which remain on a 20+ year time-frame

Stage 11: Establishment of sea water intake, principal

pipeline route and infrastructure connection to supply

minimum 600 L/s seawater to Costa Fuego.

Potential Stage 21: Baseline modular desalination plant,

desalination pipeline and supply to Los Colorados, Nueva Union

projects and nearby communities

Potential Stage 31: Desalination upgrade and extension to

higher Andean projects for 2050 and beyond

Basis of Study -

Stage 2 Network1

NProposed Sea Water Pipeline Route

Proposed Desalinated Water Pipeline Route

1 Conceptual water demands and timeframes are for the purposes of the Huasco Water PFS-level Engineering Study only. They do not represent a forecast of actual water supply or demand, nor do

they imply that potential customers will go into production and would enter into water offtake agreements with Huasco Water.

5COMPANY PRESENTATION |

www.hotchili.net.au

Year 1 Year 2 Year 3 Year 4

Financial Analysis

Investor Engagement – Preliminary Feasibility Study

Regulatory & Community Stakeholder engagement EIA

Intake and Initial Seawater Transmission

Construction

Completed Present

Adjust Maritime Concession for Desalination

Preliminary Feasibility Study

Customer Negotiations

Concept

Study

Customer Engagement

Concept

Study

Second Maritime Concession Application for Expansion of Future Capacity

Set-Up SPV2

Commissioning and

revenue generation

Feasibility Study Front End

Engineering Design

Stage 1 Construction

& Investment

Decision

Environmental

Impact Assessment

(EIA) Submission

Investor Engagement - Final Investment Decision (FID)

Regulatory & Community Stakeholder

engagement FID

Regulatory & Community Stakeholder engagement

Ongoing

Conceptual Development Roadmap1

Conceptual roadmap ensures alignment and synergies between Huasco Water and Costa Fuego

1 All dates are preliminary in nature and subject to change

2 SPV refers to Special Purpose Vehicle

Preliminary

Feasibility Study

Release

6COMPANY PRESENTATION |

www.hotchili.net.au

Huasco Water: PFS Progress1

Engineering

Regulatory and Stakeholder

Customer and Market Engagement

PFS on-track for completion in H1 2025, with critical workstreams progressing across three key areas

• Initial Engineering trade-off Study complete, with analyses determining

most viable solution based on cost and deliverability

• Recommendations from the trade-off are being reviewed for consistency

with the Costa Fuego PFS, being developed in parallel

• Transfer of water assets to Huasco Water nearing completion

• Secondary concession application2 progressing, expected by Q1 2026

• Preliminary environmental studies and archaeological surveys being

completed at the maritime concession

• Significant interest from regional near-mine developers and non-mining

customers for future desalinated water offtake

• Positive engagement with the local community, who see fresh water

supply as fundamental to the region

1 Further detail on PFS scope and trade-off studies are available in the Appendix slides 12 - 14

2 See announcement ‘Hot Chili Submits Second Maritime Concession Application’ dated 12 April 2024

7COMPANY PRESENTATION |

www.hotchili.net.au

Risks & Mitigations

Key risks are being managed and the overall Project risk profile is decreasing

Stakeholder Complexity

Suitability of Maritime Concession

Environmental Approvals

Sufficient Third-Party Offtakers

Impact on Costa Fuego

Risks Mitigations

Leveraging local and global experts within the Huasco Water team who

understand needs of stakeholder groups

Second concession has been moved to a prioritized approval process,

expected completion by Q1 2026

Site of planned desalination plant controlled by a potential client,

pipeline easement secured, Huasco Water team has proven track

record of securing easements

Early engagement has been overwhelmingly positive, with strong

understanding of potential to reduce CAPEX hurdles, decrease timeline

to development, and significantly increase Project NPV

All Huasco Water approvals required for the Costa Fuego Project are

already secured, so proposed Stages 2 and 3 of Huasco Water will not

delay Costa Fuego

8COMPANY PRESENTATION |

www.hotchili.net.au

Appendix