Where installations are happening
Karnataka, Maharashtra, Rajasthan, Gujarat and Tamil Nadu accounted for more than 85% of open access solar installations in 2025. Gujarat and Karnataka are the states industry analysts most often rate as having the most favourable frameworks, mainly because of lower cross-subsidy surcharges and fewer procedural restrictions.
State pages
- GujaratRules and notes, fees not verified yet
- Karnataka4 of 7 grid fees verified
- MaharashtraRules and notes, fees not verified yet
- RajasthanRules and notes, fees not verified yet
What each state page covers
| State | State top-up for homes | What the DISCOM pays for exported units | Open access fees |
|---|---|---|---|
| Karnataka | None | ₹2.30–3.86 under gross metering; net metering available | Verified, loads into the calculator |
| Maharashtra | Only for homes under 100 units (SMART) | Net metering; check your latest MERC order | Sources disagree; take from your order |
| Gujarat | None | About ₹2.25 for surplus | Banking charge verified |
| Rajasthan | ₹17,000 for about 1.1 kW | ₹3.26 (net metering) or ₹3.65 (net billing) | Captive CSS exception noted |
One exception to know
Captive and group captive buyers are usually exempt from the cross-subsidy fee and the extra DISCOM fee. Odisha and Rajasthan have charged CSS even on captive projects, so never assume a zero charge without reading your state’s order.
States not listed yet
We add a state once its fees can be traced to a tariff order or a dated, named source. Until then, you can enter your own figures in the solar park calculator, or follow WattDekho on WhatsApp to hear when we add your state.
What each state page shows
- The grid fees we could verify, each with its source and the date we checked it
- Fees we could not verify, marked clearly so you can take them from your own order
- Rules that change your cost, such as banking limits and captive exceptions
- A button that loads the verified fees straight into the solar park calculator
Why the same offer costs more in some states
A solar park offer at ₹3.75 a unit can land near ₹4 in one state and above ₹7.50 in another. The difference is almost entirely grid fees: how high the cross-subsidy surcharge is, whether captive buyers are exempt, what banking costs and how much power is lost on the way. That is why a quote from one state can’t be compared with a quote from another without adding each state’s fees.
Sources
Figures last checked on 26 September 2026.