Who we are
An African company, built for the long term.
SIGMA Energy Developers is an African hydropower company, registered and headquartered in Kigali. We believe energy projects on this continent are best led by people who know its rivers, its institutions, and the communities they affect.
What we value
How we work, and why.
Sound engineering
We do not cut corners on the technical work. Every design choice is one we can defend for the life of the asset.
Real partnership
Governments and communities are partners in a project, not boxes to tick.
The long view
We build for permanence, not the quick exit, creating enduring assets to own, operate, and compound value over time.
A steadier grid
We design with the whole grid in mind, not only the output of our own plant.
Leadership
Janvier NDAYIZIGIYE
Founder & Managing Director, SIGMA Energy Developers
Janvier is building an integrated energy infrastructure platform focused on developing and delivering reliable, sustainable power projects in Rwanda and East Africa. He leads projects from greenfield origination and development through financing, construction, grid integration and long-term operations.
He is also the founder of SIGMA Engineering & Consultants, the group's technical arm, specialising in the engineering and management of hydropower projects.
Postgraduate
M.Eng, Water Conservancy and Hydropower Engineering
Hohai University, Nanjing
Undergraduate
BSc, Civil Engineering
University of Rwanda
Research
Published researcher in hydrodynamics
Peer-reviewed work on energy-recovery systems in water distribution networks
Working with us
Who we work with.
National plans across Africa already identify where much of the continent's hydropower potential lies. Turning that potential into operating projects requires sustained technical, institutional, financial, and regulatory work. That is the work SIGMA does, alongside the partners needed to do it well.
Technical and financial partners
We lead project development and engineering, working with equipment suppliers, contractors, financiers, and other specialist partners to develop projects that meet international technical, financial, and bankability standards.
Governments and institutions
We work with local and national governments, public institutions, funds, grant providers, and development partners to align projects with national priorities, strengthen institutional support, and mobilise the resources required for successful delivery.
Communities
The people and communities that host a project are partners in its development. We engage local leadership early, before construction begins, and establish clear commitments that are documented, monitored, and followed through throughout the life of the project.