A South African solar engineering company — designing, manufacturing, and installing systems from commercial rooftops to multi-megawatt industrial facilities.
Deo Solar was founded by Gerhard Farrell, whose background spans the mining, petrochemical, and energy industries — and Jaco Farrell, who brings more than 30 years of hands-on experience across agriculture, construction, and energy.
That combination of sectors isn't accidental. Solar sits at the intersection of all of them — it powers farms, factories, and remote sites under conditions that demand real engineering, not guesswork. We knew the problems from the inside, and we built Deo Solar to solve them properly.
What started as a services business has grown into both an installer and a product developer — designing and manufacturing our own SA-built rail-less mounting brackets, used by EPCs and installers across South Africa and beyond.
Everything we do traces back to three words — the same three words in our tagline.
We provide commercially and industrially focused solar solutions — from full EPC delivery and energy analysis to our own SA-manufactured mounting products — giving clients one trusted partner for every phase of their project.
We are growing from a South African roots business into a leading solar services and products company across Sub-Saharan Africa — known for technical excellence, honest advice, and systems that work long after commissioning day.
Our tagline is our values. We generate clean energy and economic opportunity. We conserve resources through smarter installation methods. And we contribute — to clients, to communities, and to a sustainable South Africa.
Five people. One shared commitment to getting solar right — from engineering and manufacturing to delivery on site.
Managing Director
Gerhard brings a career built across the mining, petrochemical, and energy industries to the helm of Deo Solar. His cross-sector engineering background means he approaches solar not as a sales product, but as an infrastructure investment — one that has to perform under real industrial conditions.
Co-Founder
With more than 30 years of experience across agriculture, construction, and the energy sector, Jaco brings the practical knowledge that comes from building things in the field — not just designing them. His understanding of how solar integrates with farming operations, structures, and rural infrastructure is invaluable to the projects Deo Solar takes on.
Head of Projects
Johan oversees all project delivery at Deo Solar — coordinating site teams, managing timelines, and ensuring every installation meets the standard the engineering drawings call for.
Sales
Deacon is the first point of contact for most new clients — helping businesses understand their options, navigate system sizes, and find the right Deo Solar solution for their specific situation.
Client Relationship Manager
Ross ensures that clients stay informed and supported at every stage of their project — and well beyond commissioning. He’s the reason our clients come back.
There are many solar companies. Few have built their own product line, trained their own installation crew, and employed B.Eng engineers to design every system they sell.
Work With Us
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