Engineering · Project delivery · Energy infrastructure

Refineries and energy infrastructure, from concept to operations.

Zimar Group is an engineering, procurement and project-management group. We shape the investment case, carry projects through FEED, construction and commissioning, and support the asset in operation, for sovereign clients and institutional capital.

Operating & reporting standards

ISO 37001 · OGMP 2.0 · IFC Performance Standards · Equator Principles · UK Bribery Act · GDPR / NDPR

Flagship mandate · Republic of Niger · signed August 2026

A sovereign refining partnership with the Republic of Niger.

Zimar Group, with group company Hightec Energy, has concluded a $1.9 billion agreement with the Nigerien State to design, finance, build and operate a 100,000 barrel-per-day refinery and petrochemical complex at Dosso. It will be built in phases, starting with a 30,000 barrel-per-day first train. Structured as a build-operate-transfer concession, the asset transfers to the Republic of Niger at the end of its operating term.

Representatives of Zimar Group and the Republic of Niger exchange the signed Dosso Refinery agreement
Signing ceremony · Zimar Group & the Republic of Niger · Dosso

$1.9bn

Total investment

100k

Barrels per day

3 yrs

Construction programme

13 yrs

Operating term, then transfer

Once onstream, Dosso is positioned to rank among the three largest refineries in West Africa by capacity — roughly five times the size of Niger's existing refining base.

Dosso is the group’s flagship development. Alongside it, Zimar delivers feasibility, FEED, engineering and project-management work through its group companies, from offices in North America, the Caribbean, the United Kingdom and West Africa.

Zimar Group and Republic of Niger delegates sign the Dosso Refinery agreement

Scope of the mandate

Integrated downstream capacity for Niger and the wider region.

  • A 100,000 bpd refinery built in three trains, with eight products from gasoline, diesel and jet fuel to LPG, base oils, bitumen and propylene.

  • A master-planned industrial complex around the refinery: petrochemicals, a dry port and rail siding, an air cargo terminal, and solar and power.

  • A 16-year build-operate-transfer concession with the Nigerien State: three years to build, thirteen to operate, with local-content commitments.

  • Thousands of direct and indirect jobs across construction, operations and the supplier base.

From the ceremony

The moment it was signed.

0:36 · Sound
Signing ceremony · Zimar Group and the Republic of Niger
0:35 · Sound
Second view from the ceremony

“We will develop the infrastructure needed to support the refinery and create thousands of direct and indirect jobs.”

Benjamin Day · Chief Executive Officer, Zimar Group

The Group

One group, seven companies.

Zimar Group works through seven companies spanning engineering, project delivery, investment, and downstream trading and logistics.

Global Footprint

Seven offices across four regions.

Zimar Group operates from North America, the Caribbean, the United Kingdom and West Africa, with an established presence in Niger through its Dosso Secretariat.

West Africa — Niger & Nigeria

Flagship development & regional operations

Flagship
Niger
Dosso Secretariat, Dosso
African operational office
Adamawa Plaza, Central Business District, Abuja
Field base
Akenfa, Yenagoa, Bayelsa State
Concession signed
15 August 2026, Niamey
Read the announcement

Americas — Houston, Toronto & Grand Cayman

Engineering & group entities

Engineering hub
Operational office
5161 San Felipe Street, Houston, Texas
Zimar Inc.
401 Bay Street, Toronto, Ontario
Cayman Islands
Caribbean Plaza, West Bay Road, Grand Cayman

United Kingdom — London

Institutions & counterparties

Representative
Representative office
1 Mayfair Place, London W1J 8AJ

Capabilities

Concept to operations under one delivery framework.

  1. Conceptual
  2. FEED
  3. Engineering & construction
  4. Commissioning
  5. Operations & optimisation

Refining & petrochemicals

Grassroots refineries, upgrades and revamps, single process units, offsites and utilities, with integration to petrochemicals.

Gas processing & midstream

NGL recovery, condensate stabilisation, dehydration, acid gas removal, fractionation support and residue compression.

Power & data-centre energy

Residue fuel sourcing, commercial agreements, RAM analysis, gathering infrastructure and microgrid development.

Measurement & material balance

Audit of material-balance methodology, inventory and LACT control, and analytical-system review to recover lost value.

Project management

Cost estimation, vendor selection, risk analysis, construction, commissioning and start-up support.

Compliance & carbon

Environmental planning and permitting, MRV audits, facility carbon footprint, and carbon capture and sequestration engineering.

Track record

Rebuilds, fast-track engineering and measurable returns.

200 MMcf/d
Gas processing plant fire rebuildA bypass returned the plant to full capacity, then the damaged exchanger was replaced under one design, fabrication, construction and commissioning contract.
80 days
Ethane blending systemA new mixing system for 50,000 bpd of liquid ethane, engineered, fabricated and built in 80 days with a clean start-up.
220,000 kg/h
Steam boiler utility upgradeDesign and installation of a high-pressure boiler serving an integrated refinery, power plant and gas plant.
< 1 year
Rail and road loading recoveryA vapour-recovery system using the client’s existing equipment: payback in under a year and up to 10% more terminal throughput.

Projects delivered by group company Hightec Energy in the United States. Clients are not named for confidentiality.

HSE & Sustainability

Safety is our licence to operate.

Safety and environmental performance is measured against IOGP indicators and reported to the board and to lenders.

0.28

LTIF (Lost Time Injury)

Rolling average (benchmark-led)

1.10

TRIR (Recordable Rate)

Rate per exposure hour

Sustainability Targets (2030)

Methane Intensity (OGMP 2.0) Targeted percentage reduction
Routine Flaring Reduction Elimination targeted

Newsroom

Announcements and coverage.

Milestones from Zimar Group and independent coverage of the Dosso agreement.

AUG 15 2026 · CONCESSION SIGNED

Zimar Group signs $1.9bn Dosso Refinery agreement with the Republic of Niger.

Signed in Niamey, the build-operate-transfer concession covers the design, financing, construction and operation of a 100,000 bpd refinery and petrochemical complex.

Read the project brief

In the press

Investors

Financial strength & discipline.

The figures below are the publicly announced terms of the Dosso agreement. Detailed project and financial information is released to qualified counterparties under NDA.

$1.9bn

Mandate value — Dosso

100,000bpd

Design capacity

The Dosso mandate at a glance

Capacity
100,000 bpd in three trains
First phase
One 30,000 bpd train
Structure
16-year build–operate–transfer
Term
3 years build, 13 operate
Feedstock
Nigerien Agadem crude
Products
Eight, gasoline to propylene
Signed
15 August 2026, Niamey

Project documentation and financial information are released to qualified counterparties under non-disclosure agreement. Request access through the client portal.

Governance

Policies & oversight.

Board committees oversee gate reviews, third-party audits, and ESG disclosures mapped to IFC, Equator, and ECAs.

ISO 37001 aligned (anti-bribery) UK Bribery Act Compliance GDPR / NDPR

Audit & Risk Committee

Chaired by independent directors, ensuring financial integrity and robust internal controls.

ESG Committee

Oversight of climate risk, community relations, and biodiversity impact assessments.

Leadership

Board and management.

An engineering, finance and commercial bench drawn from across the group.

His Highness Emir Nasir Ado Bayero portrait

Chairman of the Board

His Highness Emir Nasir Ado Bayero

Brings financial expertise and long corporate-governance experience to the chair.

Chairs the boards of 9mobile Nigeria, Enclo and Pinnacle Oil and Gas, and sits on the boards of SEPLAT Petroleum, Platform Petroleum, Intels (Oilfields) Services and Misana Energy Resources.

Board leadership

Thomas Mathew portrait

Thomas Mathew

President and Founder

Around 60 years in oil and gas engineering, project management and construction, including petrochemicals, LNG and refineries.

Benjamin Day portrait

Benjamin Day

Chief Executive Officer

Co-founder of Hightec Energy with 25+ years in refining, midstream and petrochemicals; formerly Enterprise Products Partners.

Victor Diamond-Di portrait

Victor Diamond‑Di

Managing Director

Legal and commercial leader with 22+ years negotiating joint ventures and international transactions.

Tidjani Almoustapha portrait

Tidjani Almoustapha

Principal Executive Director, Niger

Former PwC auditor in Morocco who went on to work for banks across Africa; educated in Morocco and Canada. Leads Zimar’s operations in Niger.

Alhaji Awwal Manga portrait

Alhaji Awwal Manga

Executive Director

Founder and CEO of Supachem; board director of Mainstream Energy Solutions, a leading Nigerian power company.

Mir Sam Amin portrait

Mir Sam Amin

Executive Director

Founder of MEA Energy Trading (Bell Weather International, Dubai); leads downstream trading, retail and logistics in West Africa.

Executive officers and directors

Jai Kishan Maheshwari portrait

Jai Kishan Maheshwari

Chief Financial Officer

Over 20 years of oil and gas experience with Reliance Industries.

Vinay Hans portrait

Vinay Hans

Chief Operating Officer

Petrochemical engineer with over 36 years in oil and gas, including 20+ years with Reliance Industries, where he worked on its first refinery.

Dami Ige portrait

Dami Ige

Director, Commercial Governance and Regulatory Compliance

LLM, King’s College London. Oversees licences, contractual governance and energy-sector regulation.

Richard Chapman portrait

Richard Chapman

Director, Projects Coordination

30+ years as a multi-discipline project manager on power, oil and gas and modular refineries across Africa and the Middle East.

Kevin Culleton portrait

Kevin Culleton

Director

35 years of global engineering experience, including the UK, Belgium and Turkey.

Dhaval Shah portrait

Dhaval Shah

Manager, Refinery Construction

21+ years leading hydrogen, CCUS and petrochemical EPC projects for firms such as Air Products and Linde.

Abdullahi Idris Kurfi portrait

Abdullahi Idris Kurfi

Director, Trading and Commercial

30+ years in the Nigerian oil and energy sector; CEO of several oil and gas companies.

Mohammed Ahmed Talba portrait

Mohammed Ahmed Talba

Director, Real Estate and Logistics

25+ years in remote-site logistics and camp management, including operations for over 10,000 personnel.

Theo Olali portrait

Theo Olali

Director, Products Marketing, Branding and Outsourcing

32 years across the United States and Africa in product partnerships and strategic outsourcing.

Corporate functions

Chinna Kanniah portrait

Chinna Kanniah

Administration

Michael Onuoha portrait

Michael Onuoha

Investment Coordination

Abdulkadir Nasir Bayero portrait

Abdulkadir Nasir Bayero

Director

Careers

Build energy infrastructure with us.

We hire engineering and commercial specialists across seven offices. Speculative applications are welcome.

Engage with Zimar

Submit a mandate outline and our deal team will respond within two business days.

Global Offices

Houston — Operational Office

5161 San Felipe Street, Houston, TX 77056, USA

Toronto — Zimar Inc.

401 Bay Street, Toronto, ON M5H 2Y4, Canada

Grand Cayman

Caribbean Plaza, 878 West Bay Road, Grand Cayman, Cayman Islands

London — Representative Office

1 Mayfair Place, London W1J 8AJ, United Kingdom

Abuja — African Operational Office

Suite 411, Adamawa Plaza, Central Business District, Abuja, Nigeria

Yenagoa — Field Base

25 Mechanic Bus Stop, Azareel's Place Resort, Akenfa, Yenagoa, Bayelsa State, Nigeria

Niger — Dosso Secretariat

Dosso Secretariat, Dosso, Niger Republic