Global Water & Energy Solutions
Turn-key supplier of sustainable, tailored and scalable systems for the water and energy sector
About Us
Where Norwegian precision meets global infrastructure expertise in comprehensive end-to-end EPC solutions for water and energy systems.
Global EPC Infrastructure Partner
Inrigo AS is a Norwegian-owned engineering, procurement, and construction (EPC) company established in 2008, with headquarters in Trondheim. We specialize in the design, fabrication, and delivery of tailored, modular systems for the water, wastewater, and energy sectors. Our expertise spans both industrial and municipal applications, with a focus on innovative technologies and sustainable engineering.
With over 250 successfully completed projects across diverse and often challenging environments, Inrigo has earned a reputation for quality, reliability, and operational excellence.
Our Mission
To deliver innovative, sustainable, and cost-efficient infrastructure solutions that address the world's growing need for clean water, environmental protection, and renewable energy.
What We Do
Water Treatment & Purification
Modular systems for drinking water, industrial process water, and desalination
Wastewater & Sludge Management
Advanced treatment for municipal and industrial wastewater
Renewable Energy Systems
Integration of green energy technologies and resource recovery
Circular Solutions
Turnkey systems supporting low-carbon and circular economy goals
Engineering & Project Execution
Complete EPC delivery from design through commissioning
Engineering Excellence Since 2008
From Norwegian offshore engineering to global water infrastructure solutions - a timeline of innovation and expansion.
Foundation as PTM Production
Established in Trondheim as PTM Production, specializing in prefabricated industrial systems for offshore and marine applications.
Rebranded as Inrigo AS
Company rebranded to Inrigo AS and established Inrigo Water AS, marking our strategic entry into water treatment markets.
Strategic Focus Shift
Merged Inrigo and Inrigo Water operations, pivoting to specialize in water and renewable energy sectors with enhanced technical capabilities.
International Expansion
Established Inrigo Africa in Cameroon and acquired STH Engineering AS, significantly expanding our global reach and engineering capabilities.
Global EPC Leadership
Breakthrough in North American markets with major pilot implementations. Now delivering 250+ projects across 3 continents with full EPC capabilities.
International Standards & Certifications
Rigorous compliance with international quality, environmental, and safety standards ensures project success and regulatory adherence.
ISO 9001:2015
Quality Management System ensuring consistent delivery and continuous improvement across all operations.
ISO 14001:2015
Environmental Management System demonstrating commitment to sustainable operations and environmental protection.
ISO 3834-2:2006
Welding Quality Requirements for comprehensive quality standards in metalwork and fabrication.
Engineering Excellence in Action
Showcasing our commitment to delivering world-class water and energy infrastructure solutions across diverse environments and applications.
Carbon Capture Facility
Precision steel frame construction for advanced industrial processing systems.
Meyomessala Water Treatment
Local expertise and international standards working together for community infrastructure.
Melong Water Facility
Comprehensive drinking water treatment facility serving rural communities in Cameroon.
Norwegian Biogas Facility
Advanced biogas production system converting organic waste into renewable energy.
Collaborative Engineering
Modern digital tools enabling precision engineering and seamless project coordination.
Operational Excellence
Safe and efficient operations ensuring optimal system performance and reliability.
Explore Our Complete Project Portfolio
Discover more engineering solutions and successful project implementations across water treatment, energy recovery, and infrastructure development.
View All ProjectsOur Values
Our core values guide every decision we make and shape the way we work with clients, partners, and communities around the world.
Integrity
We act with professionalism, transparency, and accountability in all we do.
Innovation
We embrace forward-thinking solutions and invest in continuous improvement.
Sustainability
Environmental stewardship and long-term value creation guide our operations.
Collaboration
We work closely with clients, partners, and communities to ensure lasting success.
Corporate Social Responsibility
Contributing to UN Sustainable Development Goals through responsible business practices and sustainable infrastructure solutions.
Our CSR Framework
Sustainable Solutions
Developing technology and systems that create positive environmental impact while meeting client infrastructure needs.
Capacity & Institutional Strengthening
Building local technical capabilities and supporting institutional development in emerging markets.
Stakeholder Welfare
Ensuring welfare for our workforce, clients, stakeholders and society through responsible business practices.
Business Ethics & Integrity
Maintaining high standards of business ethics and integrity in all operations and partnerships.
Contributing to Global Goals
Through our activities and business operations we contribute to UN SDG achievement, focusing on sustainable development goals that align with our expertise in water, energy, and infrastructure development.
UN Sustainable Development Goals
Supporting global sustainability through our infrastructure solutions
Worldwide Operations & Impact
With projects delivered in USA, Europe, Africa, Inrigo operates globally with a strong local footprint. Our strategic partnerships and regional offices ensure responsive service and culturally aligned execution in every market we serve.
Nordic Headquarters
Engineering, R&D, and project management center
African Operations
Regional engineering and project execution
Global Network
Strategic partnerships and project delivery
Ready to Discuss Your Infrastructure Project?
Connect with our engineering team to explore EPC solutions tailored to your water, wastewater, or energy recovery requirements. From feasibility assessment to full system delivery.