Trust Signal – "India’s #1 Solar Company"
Sia Engineering is recognized as one of India’s top solar EPC contractors, with over 150+ satisfied clients and 87+ active solar projects. Our experience spans on-grid, off-grid, and hybrid solar systems, ensuring efficient and cost-effective energy for every kind of property.
- 25+ Years of Engineering Expertise
- 150+ Clients Served
- Trusted Across Delhi NCR and Beyond
Tailored Solar Solutions for Every Sector
Homes
Slash your electricity bills with high-efficiency residential rooftop solar panels designed for Indian homes.
Housing Societies
Custom solar setups for gated communities and apartment complexes with maximum energy savings and grid integration.
Commercial & Industrial
Large-scale solar installations for factories, offices, and warehouses with guaranteed ROI and sustainability benefits.
Let's Build
Your Solar Future
Welcome to Sia Engineering: Building India's Future Togethers
About Sia Engineering – Engineering Excellence Since 1999
Sia Engineering is a pioneer in India’s engineering and renewable energy landscape. With decades of experience across infrastructure, defense, mining, and solar energy, we deliver turnkey solar solutions using the latest technology and world-class safety standards. Our team of 500+ engineers and technicians ensures every project is executed with precision and purpose.
- ISO-certified processes
- Led by industry veterans and solar experts
- Member of renewable energy councils in India
Featured Verticals
Mining and Earth Work
We specialize in large-scale excavation and sustainable mining, prioritizing safety, efficiency, and environmental stewardship. Our operations integrate sustainable energy to reduce the carbon footprint of industrial activities.
Infrastructure Projects
Sia Engineering drives economic growth and connectivity with cutting-edge infrastructure solutions. We integrate rooftop solar power plants and on-grid solar systems to enhance efficiency and sustainability.
Defence Contracting
Supporting India’s defense forces, we provide engineering and contracting services with off-grid and hybrid solar systems, ensuring uninterrupted power in high-security and remote locations.
Renewable Energy
Leading the shift to sustainable energy, we specialize in rooftop solar, on-grid, off-grid, and hybrid solar systems, offering cost-effective, high-efficiency solutions for homes and businesses.
Breaking Stereotypes for 25+Years
Transparent Process
We believe in open communication and seamless collaboration. Our transparent process ensures you stay informed and in control at every stage of your project because trust is the foundation of everything we build.
Quality Assurance
Excellence isn’t just a goal—it’s our commitment. We implement rigorous quality checks to guarantee top-tier results, ensuring every project stands the test of time, delivering reliability you can count on.
Bringing Buildings to Life
More than just structures, we create spaces that inspire, function efficiently, and enhance communities. Engineering with purpose is at the heart of what we do, shaping a future where design meets sustainability.
Prioritizing Your Interests
Your vision is our mission. We align our expertise with your goals to deliver tailored, impactful solutions that not only meet but exceed expectations. Because when you succeed, we succeed.
Safety First, Always
Nothing matters more than the well-being of our people, partners, and the communities we serve. Safety isn’t just a policy—it’s a mindset woven into every decision, ensuring every project is built with care, precision, and responsibility.
Driving Excellence Across Industries with End-to-End Solutions - Mining & Earthwork, Infrastructure Development, Defence Contracting, and Solar Energy
Why Homeowners & Businesses Trust Sia Engineering
Areas We Serve
We proudly serve clients across Delhi NCR, including:
- Noida
- Greater Noida
- Ghaziabad
- Gurgaon
- Faridabad
- South & West Delhi
For bulk and commercial solar projects, we operate PAN India.
What Our Clients Say
To successfully solve all the issues related in each vertical, we have established longterm and stable partnerships with various clients
“Reliable, professional, and tech-savvy—Sia’s solar team delivered ahead of time.”
“We powered our entire apartment society with rooftop solar thanks to Sia’s customized approach.”
From the Experts: Our Solar Knowledge Hub
Have Questions? We’ve Got Answers.
What type of solar system is best for homes?
On-grid systems are ideal for urban homes with stable electricity. Hybrid systems add battery backup.
Do you provide government subsidy support?
Yes, we help you access eligible MNRE solar subsidies and assist in documentation.
How long does the installation take?
Residential systems take 5–7 days. Commercial installations depend on scale and approvals.
What warranties do you offer?
25-year panel performance warranty 5–10 years on inverters and workmanship.
“Switching to solar with Sia Engineering was seamless. We now save over ₹30,000 every month!”