Home EV Charging + Rooftop Solar in Hyderabad: Drive at Zero Per-Km Cost
Petrol costs ₹7–9/km. Charging from the grid costs ₹1.50–2/km. Charging from your own rooftop solar: effectively ₹0. Here's the complete guide to combining an EV and solar in Hyderabad.
The Cost-Per-Km Comparison: Why Solar + EV Is Unstoppable in 2026
Let's start with simple math on a car that does 15,000 km/year (typical Hyderabad commuter):
| Mode | Cost/km | Annual Fuel Cost | 10-Year Fuel Cost |
|---|---|---|---|
| Petrol car | ₹7–9 | ₹1,05,000–₹1,35,000 | ₹10.5–13.5 lakh |
| EV from grid | ₹1.50–2 | ₹22,500–₹30,000 | ₹2.25–3 lakh |
| EV + solar ★ | ~₹0.20* | ~₹3,000* | ~₹30,000* |
*After solar system cost is recovered (~3–5 years). The "cost" is only the marginal O&M. In practice, most solar EV owners report near-zero energy cost for driving once their system is paid off.
The 10-year saving vs petrol: ₹10–13 lakh. The combined cost of a 5kW solar system + 7.4kW home EV charger in Hyderabad: ₹2.5–3 lakh. The math is overwhelming.
Sizing Your Solar System to Charge an EV in Hyderabad
The key question: how much extra solar capacity do you need to charge your EV on top of your household consumption?
- Daily commute: 40 km → ~8–9 kWh needed
- Daily commute: 60 km → ~12–14 kWh needed
- Daily commute: 80 km → ~16–18 kWh needed
- 40 km/day commute → add 1kW extra solar
- 60 km/day commute → add 1.5kW extra solar
- 80 km/day commute → add 2kW extra solar
Based on Hyderabad's ~5.5 peak sun hours/day. EV consumption assumes 6.5–7 kWh per 100 km (typical for Tata Nexon EV, MG ZS EV, Hyundai Creta EV).
Practical recommendation: If you have a single EV and a 3 BHK home consuming 250 units/month, a 5kW system covers both comfortably in Hyderabad. If you drive 80+ km/day or have 2 EVs, consider a 7–8kW system.
Which Charger Should You Install at Home?
For home solar + EV use, the 7.4kW Type-2 AC wall box is the right choice for most Hyderabad homeowners. Here's why:
- 7.4kW charges during peak solar hours (9am–3pm) — exactly when your panels are generating most. A 7.4kW charger fully charges a 30kWh battery in ~4 hours, which aligns with peak solar output window.
- Compatible with all major Indian EVs — Tata Nexon EV, Tata Tiago EV, MG ZS EV, MG Comet, Hyundai Creta EV, Kia EV6, BYD Seal, Ather 450X, Ola S1, Chetak
- Smarter solar EV coupling — some 7.4kW chargers support scheduling, so you can set them to charge only when solar generation is active
See our full home EV charger installation guide for a comparison of 3.3kW, 7.4kW, and 22kW options with pricing.
On-Grid Solar + EV: Does Net Metering Still Help?
Yes — and here's how the math works under TSSPDCL net metering when you have both solar and an EV:
- Daytime: Solar generates → powers home appliances and charges EV simultaneously
- Surplus solar (when EV is away at work): Exported to grid → credited to your net meter account
- Night: EV charges from grid → deducted from credits accumulated during the day
- Net result: Most solar EV homes in Hyderabad get a monthly electricity bill of ₹0–₹200 instead of ₹3,000–₹5,000 combined (home + EV charging)
The system works best when you charge your EV at home (not at public fast chargers), keeping all charging consumption within your net metering cycle.
The Complete Investment and ROI Calculation
Solar Cubic's Combined Solar + EV Package for Hyderabad
Solar Cubic offers a combined solar system + home EV charger installation package — one quote, one installation visit, one TSSPDCL application. Benefits of a bundled approach:
- Single wiring and DB upgrade for both solar inverter and EV charger connections
- Optimised solar system sizing that accounts for your EV charging profile
- Smart charger scheduling integrated with solar generation monitoring
- Single warranty and AMC coverage for the entire installation
Explore our on-grid solar installation page and home EV charger installation page for individual product details.
Get a Combined Solar + EV Charger Quote
Tell us your EV model, daily km, and monthly electricity bill. We'll design the exact solar + charger system to get you to zero per-km cost.