Emmanuel Kasengele
Founder & Mechanical Engineering Lead
Now in field validation
Locally engineered hydropower, from the rivers that already flow past.
Royal Flow Energy is a Zambian engineering company developing Riverbox, a low-head micro-hydro system. We have moved beyond the concept stage: we are validating Riverbox through pilots and preparing for commercial deployment.
About
Energy access is still out of reach for too many
Electricity powers study after dark, safe clinics, cold storage and small businesses. Riverbox is designed to bring that power to communities beside Zambia's rivers.
Beyond the grid
Many rural Zambian communities remain unconnected to the national grid, or receive unreliable supply.
Costly alternatives
Diesel generators and kerosene are expensive, polluting and depend on fuel transported over long distances.
Untapped rivers
Small streams flow past these communities every day — a clean energy resource that is rarely used.
Riverbox
Simple to install. Built to be maintained locally.
- 01
Water flows in
Riverbox sits in a stream or channel with 1–10 metres of head — no large dam required.
- 02
The turbine spins
A locally engineered low-head turbine turns moving water into rotation, day and night.
- 03
Power is delivered
An integrated generator and control system supply electricity to nearby homes and enterprises.
Current progress
Integration, testing & field validation
The Riverbox prototype has been developed. We are now completing system integration, testing and field validation of the first fully integrated pilot systems.
- ✓ CompletePrototype developed
- ● NowPilot validation
- Step 3Manufacturing capacity
- Step 4Local fabrication network
- Step 5Commercial installations
- Step 6Multi-site projects
- Step 7Regional expansion
Recognition
Jury Choice Award for Energy Impact
Global Sustainability Challenge finals — Munich, April 2026
Recognised by experts from Stanford University, TUM and Imperial College London.
Impact
Built for real-world scale
- Low-head water sources
- 1–10 m
- Scale-up capital target
- US$70k
- Rural communities targeted
- 20+
- Installations — long-term goal
- 100+
Growth goals
From pilots to a Zambian hydropower company
Short-term goals
Complete and field-test the first fully integrated Riverbox pilot systems at varying capacities and operating conditions.
Manufacturing & capacity
Build local fabrication and machining capacity for Riverbox production.
Deployment & market
Expand Riverbox deployment into rural communities with suitable low-head water resources.
Long-term vision
Become a Zambian engineering and renewable-energy deployment company delivering small hydropower from resource assessment to commissioning.
Scale-up capital target
$70,000
To build the manufacturing, engineering, testing and deployment capacity that takes Riverbox from validated pilots into early commercial production.
Discuss investmentInvestment
What the capital supports
- Fabrication & machining
- Machinery & tooling
- Testing & quality control
- Skilled technical team
- Working capital
- Additional deployments
- Supplier network
- Commercial readiness
For individuals & organisations
Support Riverbox
Contribute financially to the development and deployment of locally engineered micro-hydro technology in Zambia. Contributions are received directly by Royal Flow Energy through our own verified payment channel.
Our verified Royal Flow Energy payment link is being set up. Contact us if you would like to support Riverbox in the meantime.
For investors & partners
Invest / Partner with us
For investors, NGOs, energy companies, development organisations, technical partners and deployment partners who want to discuss serious collaboration.
Team
The people behind Riverbox
Faith Mfune
Legal & Community Engagement Lead
Alexander Mushibwe
Electrical Engineering Lead
Malachi Bambala
Marketing & Public Relations Lead
Moses Mwale
IT & Digital Systems Lead
Get in touch
Questions about Riverbox, a potential site, or working with us? We'd love to hear from you.
Contact us