Dassy-entreprise

Solar power systems designed and built for Rwanda

DASSY Enterprise plans, installs and maintains solar systems for homes, businesses and institutions, supported by our head office in Kigali City and four selling branches.

Solar panels installed on a building roof

Founded in November 2007 by NEZERWA Francois d'assise, a holder of a master's degree in renewable energy engineering, DASSY Enterprise is an energy service company with its head office in Kigali City and four selling branches.

What we deliver

Each service begins with a measured understanding of the load, the site and the budget.

Solar home systems

Compact systems sized for lighting, phone charging and appliances, with batteries chosen for local climate and daily use.

Commercial and industrial solar

Rooftop and ground-mounted arrays that reduce grid dependence for shops, workshops, schools and factories.

Energy efficiency audits

Metered reviews of lighting, cooling and motor loads, with a ranked list of changes and their expected payback.

Energy project management

Tendering, supplier selection, site supervision and handover for clients who need one accountable team.

Maintenance contracts

Scheduled cleaning, inverter checks and battery testing so that systems keep their rated output for years.

Solar water pumping

Pumps and storage tanks for irrigation and livestock, designed around the depth of the source and daily water demand.

Site assessment before any panel is fixed

Our engineers survey roof structure, shading, cable routes and existing electrical loads. The findings become a written design that the client reviews before installation begins.

  • Shading and orientation analysis
  • Load profile from metered consumption
  • Battery and inverter sizing for the site
Engineer inspecting a roof before solar installation

Projects run from design to handover

For larger energy projects, DASSY Enterprise manages the full cycle: feasibility, financing documents, procurement, construction supervision and commissioning. Clients receive test reports and an operating manual for their own staff.

Technician commissioning an inverter in a plant room

Common questions

A home system is usually installed within a few days of approval. Commercial sites take longer, depending on structural checks and grid connection work.

Yes. We begin with an inspection of the array, batteries and controllers, then agree a maintenance schedule with the owner.

Ready to plan your system?

Send us your electricity bills and site details, and our team in Kigali or at one of our branches will respond with next steps.

See completed projects

Solar array on a hillside at sunrise