Residential rooftop
For homes evaluating bill savings, net-metering readiness, roof suitability and subsidy eligibility.
- Bill/tariff and shadow assessment
- On-grid, hybrid and backup choices
- Vendor quotes, warranties and safety
☀ FREE SOLAR KNOWLEDGE FOR EVERYONE
Understand solar. Make confident decisions.
Clear, practical solar information for homes, farms and businesses — in English, Hindi and Marathi.
English · हिन्दी · मराठी • Public knowledge, calculators & policy intelligence⌂ Homeowners♧ Farmers▦ Businesses⚙ Solar professionals
Public-first knowledgeClear guides for homeowners, farmers, businesses and solar professionals.
Practical calculatorsIndicative sizing, savings and backup estimates with transparent assumptions.
Policy intelligencePublished state/DISCOM profiles, source links, effective dates and updates workflow.
Multilingual accessCore experiences available in English, Hindi and Marathi.
EXPLORE BY TOPIC
View all articles →Learn solar, step by step
Start with the basics or explore a topic that matters to you.
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View all articles →Popular learning guides
☀Solar Basics · 4 min read
How does solar power work?
Learn how sunlight is converted into electricity for homes and businesses.
Read guide →☀Solar Systems · 4 min readOn-grid, off-grid and hybrid solar systems
Understand three common solar system types and where each may be useful.
Read guide →☀Home Rooftop Solar · 5 min readBefore installing rooftop solar at home
A practical checklist for roof suitability, electricity bills and installer questions.
Read guide →BUSINESS & PROJECT PATHS
Explore solar business →Solutions by consumer and business type
Choose the path that matches your site, load pattern, risk profile and commercial objective.
Commercial & industrial
For offices, shops, factories and institutions optimizing daytime demand and operating cost.
- Load profile and sanctioned demand
- CAPEX vs OPEX/RESCO evaluation
- Export settlement and transformer limits
Agriculture & rural
For irrigation pumps, farm loads and rural reliability where water flow and operating hours matter.
- Pump sizing and total dynamic head
- Solar pump/controller selection
- Scheme applicability and field conditions
EPC, channel & services
For installers, distributors, developers and service providers building dependable solar offerings.
- Site survey and proposal quality
- Compliance, commissioning and O&M
- Policy, documentation and customer trust
Useful tools. Clear answers. No paywall.
Our public knowledge library and basic calculators are free to use. No account is required. Solar estimates are indicative. Actual performance, tariffs, subsidy eligibility and export settlement depend on site conditions and current local rules.
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