Solar that pays you back
Design, subsidy support, and install—without the runaround.
Rooftop and commercial systems sized to your bill, with clear pricing, net-metering help, and maintenance options across Hyderabad, Bangalore, and more cities.
10+
Years
500+
Projects
24/7
Support
Estimate your solar savings live
Pick your setup. Watch your size, savings and EMI update instantly. No routing, no waiting.
Setup type
What are you installing?
Monthly electricity bill
Drag the slider or pick a preset
Indicative estimate only. Final design, subsidy and pricing are confirmed after a free site survey by our partner installers.
Recommended system
4 kW
Generates ~6,424 kWh/yr
Est. annual savings
₹44,968
on your power bill
Annual gen.
6,424 kWh
Space needed
400 sqft
System cost
₹2.80 L
Effective cost
₹1.82 L
incl. ₹97.5K subsidy
Payback period
4.1 yrs
Then it's pure savings for the next 21+ years.
Or finance with EMI @ 6%
6 months
₹31.0K/mo
12 months
₹15.7K/mo
18 months
₹10.6K/mo
24 months
₹8.1K/mo
Like what you see? Get a free site survey.
WHY TO CHOOSE ONECASA?
Powering the Future One Ray at a Time
Engineering & quality
Tier-1 modules and inverters, structurally sound mounting, and checks at every stage—so your plant performs for decades.
Financing & savings
We walk you through subsidies, bank tie-ups, and payback so the switch to solar is transparent before you sign.
Smart energy design
Right-sizing kW, net metering, and future battery-readiness so you are not over- or under-built.
OUR SERVICES
Energy Independence Through Solar Power & Best Offers for Renewable Energy
Solar for Agriculture Farms
Harness clean energy for agriculture while cutting costs and ensuring sustainability.
Solar for Industrial Use
Empower factories with renewable energy solutions for long-term savings and efficiency.
Solar for Commercial Use
Boost commercial spaces with reliable and eco-friendly solar energy solutions.
Solar for Agriculture Farms
Harness clean energy for agriculture while cutting costs and ensuring sustainability.
The full picture
Solar services that go beyond the panel
Rooftop to grid
Residential, commercial, and farm systems sized to your load profile.
Subsidy & paperwork
We help you understand state schemes and keep documentation clear.
Install & aftercare
Structured project plan, safety-first install, and AMC options.
Net metering
Guidance on DISCOM process so surplus energy is credited where applicable.
Why Choose Us
Providing Solar Energy Solutions
Efficiency & output
Optimized string design and monitoring so you get the most kWh per square foot of roof.
Warranty you can read
Clear product and workmanship coverage—so you know what is protected and for how long.
Neat, code-safe install
Structured AC/DC work, earthing, and safety checks so your roof and home stay protected.
After-sales support
Service tickets, annual health checks, and a team you can reach when generation dips.
Solar excellence
Premium quality solar solutions
1000+
Successful Projects
500+
Happy Customers
100+
Team Members
25+
Years of Experience
30+
Dedicated team
Recommended for You
How it Works
Our simple 3-step process to make solar energy accessible and reliable.
Project Planning
Understanding requirements and mapping out a tailored solar plan.
Research & Analysis
Detailed site survey, cost analysis, and choosing optimal technology.
Solar Installation
Professional installation ensuring safety, efficiency, and durability.
Nisha
The solar panels have reduced my electricity bill significan...
Trisha
I was impressed with the professionalism of the team. They e...
Frequently Asked Questions
What is the cost of solar panels?
The cost of solar panels varies depending on the size and efficiency of the system. However, the cost of solar panels has decreased significantly over the years making it more affordable for homeowners.
How long do solar panels last?
Solar panels typically last for 25 years or more. The lifespan of solar panels is dependent on the quality of the panels and the maintenance of the system.
What is the maintenance cost of solar panels?
The maintenance cost of solar panels is very low. Solar panels do not have any moving parts and do not require regular maintenance. The only maintenance required is to clean the panels occasionally to ensure maximum efficiency.
Do solar panels work during the night or on cloudy days?
Solar panels work only during the day when the sun is shining. They do not work during the night or on cloudy days. However, the energy generated by the solar panels during the day can be stored in batteries to power your home during the night or on cloudy days.