GreenSun International
Discover innovative green energy solutions
Help protect the environment by powering your home or business with 100% renewable energy.
Commitment to Sustainability
We believe solar is more than just power. It’s a pathway to a cleaner, more resilient future. Sustainability is at the heart of every system we design and install.
PIONEERING SMART ENERGY SOLUTIONS
Driven by purpose, powered by the sun
At GSI, our mission goes beyond installations; it’s about building a sustainable energy future. Every project we deliver reflects our commitment to environmental responsibility, long-term performance, and empowering people through clean energy.
a more sustainable future
We create high-performance systems that reduce emissions and energy costs for homes and businesses.
clean energy, real impact
Our solar solutions are built to last, helping clients transition to greener living without compromise.
WHAT WE OFFER
Powering homes, businesses, and industries with precision-engineered solar systems
Consultation
Not sure where to start? Our experts offer tailored consultations, site visits, and energy assessments to guide your solar journey.
Design & Engineering
We design scalable, high-performance solar systems using detailed energy analysis and precision engineering.
Installation
As a full EPC provider, we deliver seamless solar installations customised for long-term savings and sustainability.
Financed Solutions
Affordable solar made easy. We connect you with flexible finance options through banks and private partners — residential or commercial.
Operations & Maintenance
Keep your system at peak performance with expert support, regular servicing, and real-time monitoring.
POWERING WITH PURPOSE
our numbers power our story
end-to-end solar, delivered
From design to installation and long-term performance, our solutions are tailored, tested, and trusted.
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Solar installations
Over 1880+ residential and business solar installations across South Africa and Mauritius.
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megawatts of solar
Powering the future with 26+ MW of solar, expanding access for businesses and homes.
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Years in Business
With 7+ years of expertise, we power businesses and homes with reliable clean energy.
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Satisfied Clients
We have proudly installed high-performance solar solutions for 250+ happy clients.
OUR SOLAR EPC SERVICES
Powering Homes, Businesses & beyond
From homes to large-scale businesses, our full-service EPC offering covers everything from design and installation to support and supply. Ensuring quality, efficiency, and sustainability every step of the way.
Residential Installations
Custom-designed solar systems for homes that deliver energy independence, lower electricity bills, and lasting value.
Commercial & Industrial Installations
Engineered solar solutions for businesses. Scalable, efficient, and designed to meet your unique operational needs, with optional storage or genset integration.
Hot Water Solutions
Over 218 thermodynamic systems installed in SA and Mauritius. Available in 200L to 300L models, built for superior efficiency and durability.
COMMERCIAL SUSTAINABILITY
smart solar for businesses
At GSI, we help businesses reduce operational costs, meet ESG goals, and take control of their energy future. With custom solar systems, premium components, and full EPC service, we make your shift to sustainability simple, efficient, and long-lasting.
ECO-FRIENDLY CONSTRUCTION
sustainable building practices with cutting-edge energy solutions
At GSI, we support the shift to low-impact, energy-smart buildings through integrated solar technologies, thermodynamic hot water systems, and efficient, future-ready designs. Our solutions reduce environmental impact while delivering lasting savings and performance.
Sustainable Materials Usage
We prioritise environmentally responsible products and components that minimise waste and maximise system lifespan.
Energy-Efficient Design
Our solar and water heating systems are engineered to reduce energy demand while supporting modern green building goals.
HOW IT WORKS
A Seamless Solar Journey, Tailored to You
From the initial consultation to the final handover, our process is built around transparency, performance, and your long-term energy needs.
“Working with GSI felt effortless, their team handled everything with care, clarity, and professionalism. We finally feel in control of our energy.”
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Customized Energy Assessments
We begin with a detailed site visit and energy analysis to understand your usage, space, and solar potential.
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Tailored design solutions
Our engineers work with you to design a solar solution that balances performance, aesthetics, and ROI.
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Integrated System Installation
Our expert engineering, procurement and construction (EPC) teams install your system efficiently, using premium components for maximum uptime and output.
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Transparent Project Management
Throughout the process, you’ll receive clear updates, timelines, and support. This ensures a smooth, hassle-free experience.
WHY CHOOSE US
LIVE GREEN, LOVE GREEN, THINK GREEN
At GSI, we don’t just deliver solar solutions – we empower energy independence.
Expertise in Renewable Energy
Since 2011, we’ve designed and delivered cutting-edge solar solutions tailored for residential, commercial, and industrial needs across Southern Africa and beyond.
Quality and Reliability
We use only premium components and proven technologies, ensuring high-performance systems that offer durability, consistency, and peace of mind.
Customised Energy Solutions
Every client is different. That’s why we engineer bespoke systems that maximise efficiency, savings, and sustainability - no matter your energy goals.
