What We Offer
By merging cutting-edge technology with reliability engineering, we create adaptable systems that thrive in complex and unpredictable environments.
About RE21 SI
Reliability Engineering twenty one, RE21 SI is a wholly Namibian owned engineering company with a special focus on providing services to the water and energy sectors of the Namibian economy and Worldwide.
- Focus Area: Reliability of Water and Environmental Engineering related human systems
- Value Statement: Delivering resilient and sustainable water solutions through innovative engineering
- Nationwide Reach: 100% virtual office delivering services anywhere in Namibia and world-wide
- Tailored Services: We partner with clients to meet every aspect of your needs

Our Expertise
We specialize in reliable water supply systems, comprehensive stormwater management, and precise flood risk assessments — ensuring communities thrive, even in the face of uncertainty.

Flood Risk Assessment
Comprehensive flood risk assessment and management plan for urban development.

Groundwater Analysis
Groundwater and surface water studies with modeling for sustainable water management.

Drought Risk Assessment
Drought risk assessment and water resources planning in the context of climate change.
Get In Touch
For recurring needs, we customize packages at monthly and annual rates. Contact us to discuss your water and energy management requirements.
Contact Information
We operate as a 100% virtual office, delivering our services anywhere in Namibia and worldwide.
Phone: +264 81 360 9536
Email: contact@re21si.com
Why Choose RE21 SI?
- Wholly Namibian owned engineering company
- Focus on water and energy sectors reliability
- Customized packages for recurring needs
- Nationwide and worldwide service delivery