Since 2018150+ clients served
Water heating that works in real conditions.
Founded in 2018, Sonnen Energie Technik was established with a clear focus: delivering reliable, energy-efficient systems that perform in the real world — not just on paper.
Our story
Engineered for real life
We specialise in solar water heating, heat pump and hybrid cooling systems for homes, businesses and institutions that want performance they can depend on, years after installation day.
That starts with research most suppliers skip. Before we recommend a component, we look at what's actually on the Kenyan market and how it performs under local conditions: hard water, dust, power fluctuations, heat and humidity that vary by region. We don't sell you the easiest thing to source. We size the system to your real demand, choose materials and installation techniques for longevity, and stay involved once the system is running.
On commercial and development projects, that also means planning our work around everyone else's. We sequence installation with the rest of the build so hot water and cooling systems are ready on schedule, not holding up occupation.
Harneel Sagoo
Founder
The person behind Sonnen — hands-on with every system, and known across Nairobi's rooftops as Solar Singh.
What we do
We supply, design, install, and maintain hot water systems.
Every solution is tailored to each client's needs, usage patterns, site conditions, and operating environment. No one-size-fits-all systems.
- Solar water heating systems
- Heat pump solutions
- Hybrid solar air conditioning
- System design and sizing based on actual demand
- Professional installation and commissioning
- Ongoing maintenance and system optimisation
"We believe in long-term relationships, not one-off installations."
A system should evolve with your needs, and we stay involved to make sure it does.
Get in touch
Get in touch.
Whether you're planning a new system or need advice on an existing one, we're easy to reach.