Updated on 1 November 2026. State rules change, so confirm the current terms with the agencies named below before you apply.
Tamil Nadu is one of the most interesting states to start an EV charging station in right now. The state has a capital subsidy for chargers, a time-of-day EV tariff that makes daytime charging cheap, and a target of 20,000 public charging stations by 2031. It also has fixed charges on EV connections that went up in July 2025 and are easy to overlook when you plan.
Here's what you need to know about the subsidy, the electricity tariff, the power connection and where the demand is.
Quick summary
- Tamil Nadu's EV Policy 2023 gives a 25% capital subsidy on charging equipment. Public fast-charging stations can get up to ₹10 lakh each, for the first 200 stations.
- EV charging has its own tariff category with time-of-day pricing. Power is cheapest between 9 am and 4 pm.
- Fixed charges on EV connections went up in July 2025, so budget for them even in a quiet month.
- Above 150 kW you need an HT connection with your own transformer and an Electrical Inspector's safety certificate.
The Tamil Nadu EV subsidy for charging stations
The Tamil Nadu Electric Vehicles Policy 2023 runs for five years from February 2023. As reported when it was released, it offers a capital subsidy of 25% of the cost of equipment and machinery:
| Type of station | Subsidy | For the first |
|---|---|---|
| Public fast charging (at least 50 kW, with a DC charger) | 25%, up to ₹10 lakh | 200 stations |
| Private fast charging | 25%, up to ₹10 lakh | 50 stations |
| Public slow charging | 25%, up to ₹1 lakh | 500 stations |
| Battery swapping | 25%, up to ₹2 lakh | 200 stations |
A couple of things worth knowing. The state's charging guidelines say solar or other renewable equipment counts towards the subsidised cost, as long as at least 75% of its energy is used by the station. And because the subsidy is limited to the first few hundred stations, ask how many slots are left before you build your plan around it. The policy is handled by Guidance Tamil Nadu's EV cell, and the claim process isn't clearly published, so speak to them early.
The EV electricity tariff in Tamil Nadu
TNPDCL (earlier TANGEDCO) supplies EV charging stations under its own categories: LT-VII for low-tension and HT-V for high-tension connections. Under the regulator's tariff order that took effect on 1 July 2025, the energy charge depends on the time of day:
| Time | Energy charge |
|---|---|
| 9 am to 4 pm | ₹6.50 per unit |
| 4 pm to 6 pm, and 10 pm to 6 am | ₹8.10 per unit |
| 6 am to 9 am, and 6 pm to 10 pm | ₹9.75 per unit |
On top of that come fixed charges, which were roughly doubled in July 2025 when the concession on them dropped from 75% to 50%:
- LT up to 50 kW: ₹55 per kW a month
- LT from 50 to 112 kW: ₹165 per kW a month
- LT above 112 kW: ₹304 per kW a month
- HT: ₹304 per kVA a month
A smart meter that records time of day is mandatory. The order also allowed for an inflation-linked revision from July 2026, so check TNPDCL's current schedule before you finalise your numbers.
What this means in practice: the fixed charge is a cost you pay whether cars come or not, and it climbs steeply for bigger connections. A larger charger only makes sense if your site is busy enough to cover it. The good news is that daytime power is the cheapest, and across India, public DC chargers are busiest in the early afternoon. So the busy hours and the cheap hours line up nicely.
Getting the power connection
- Apply to TNPDCL for a separate EV connection under LT-VII or HT-V.
- Above 150 kW, you need HT supply, and you install your own transformer and cabling.
- An HT connection needs a safety certificate from an Electrical Inspector. For LT, a self-declaration is enough.
- Drawing approval from the Electrical Inspectorate is online through the state's single window portal, with a target of 5 days.
Under the Ministry of Power's 2024 guidelines, DISCOMs should connect a charging station within 3 days in metropolitan areas, 7 days in other municipal areas and 15 days in rural areas. Our DC charger installation guide covers the whole process.
Where the demand is
In August 2025, Tamil Nadu had about 1,400 public charging stations for nearly 4.5 lakh EVs, roughly one station for every 316 EVs. The state's EV policy names Chennai, Coimbatore, Tiruchirappalli, Madurai, Salem and Tirunelveli as EV cities, and the state's own highway rollout started on the Chennai to Coimbatore and Chennai to Kanniyakumari corridors. Tamil Nadu also got 498 stations in the first phase of the central PM E-DRIVE scheme, which are set up through government agencies.
In July 2026, the state set a target of 20,000 public charging stations by 2031, and a technical committee recommended cutting fixed and demand charges for them. That's a recommendation for now, not a rule, but it's worth watching.
Paying for it
Besides the state subsidy, you can borrow for the station. SBI EV Mitra and Indian Bank's IND Green Charge are both made for charging stations, and Indian Bank is based in Chennai. Read our EV charging station loans guide. For what a station can earn, see how much an EV charging station earns per month.
What we'd do in Tamil Nadu
Pick a site on a busy corridor or in one of the EV cities, size the connection to what you can actually fill (the fixed charges punish oversizing), ask Guidance Tamil Nadu how many subsidy slots are left, and put solar on the canopy if you have the space, since it can count towards the subsidy. For a rough number, use our cost and earnings calculator. For a full plan, book a site survey. New to all this? Start with how to start an EV charging station business.
Frequently asked questions
Is there a subsidy for EV charging stations in Tamil Nadu?
Yes. Under the Tamil Nadu EV Policy 2023, public fast-charging stations can get 25% of equipment cost, up to ₹10 lakh each, for the first 200 stations, as reported at launch. Ask Guidance Tamil Nadu's EV cell how many slots are left.
What is the EV charging tariff in Tamil Nadu?
Under TNPDCL's EV category from 1 July 2025, the energy charge is ₹6.50 a unit from 9 am to 4 pm, ₹8.10 from 4 to 6 pm and 10 pm to 6 am, and ₹9.75 from 6 to 9 am and 6 to 10 pm, plus fixed charges.
What are the fixed charges for an EV charging connection in Tamil Nadu?
From July 2025: ₹55 per kW a month on LT up to 50 kW, ₹165 from 50 to 112 kW, ₹304 above 112 kW, and ₹304 per kVA a month on HT.
Do I need an Electrical Inspector's approval in Tamil Nadu?
For an HT connection, yes, a safety certificate from an Electrical Inspector. For LT, a self-declaration is enough. Drawing approval is online through the state's single window portal.
Where should I set up an EV charging station in Tamil Nadu?
The policy's EV cities are Chennai, Coimbatore, Tiruchirappalli, Madurai, Salem and Tirunelveli, and the main corridors are Chennai to Coimbatore and Chennai to Kanniyakumari. The best site is one where EVs already pass and drivers have a reason to stop.
