Charging Cost Optimizer
Find the cheapest way to charge your EV
Compare home slow, home fast, public AC, DC fast, and ultra-fast charging costs. Adjust the mix to find the optimal balance between cost, convenience, and charging speed.
Your setup
Your EV efficiency: 7.5 km/kWh · Daily need: 6.7 kWh
Charging mix
Allocate what % of your charging comes from each source. Must total 100%.
3.3 kW · ₹7/kWh · Overnight, cheapest option
7.4 kW · ₹7/kWh · Wall box, 4-5 hrs full charge
22 kW · ₹14/kWh · Mall, office, parking AC chargers
50 kW · ₹18/kWh · Highway DC fast chargers
150 kW · ₹22/kWh · Premium highway chargers
Monthly charging cost
Rs. 2,160
/ month
₹1.44/km · Blended rate ₹10.8/kWh · 200 kWh/month
Your EV
Rs. 2,160/mo
Petrol equiv.
Rs. 10,500/mo
You save
Rs. 8,340/mo
79% cheaper
Cost by charging method
Home (slow AC)
Rs. 840/mo
Home (fast AC)
Rs. 0/mo
Public AC
Rs. 560/mo
Public DC Fast
Rs. 540/mo
Ultra-fast DC
Rs. 220/mo
Optimization insight
Cheapest possible
Rs. 1,400/mo
100% home slow charging · ₹0.93/km
Most expensive
Rs. 4,400/mo
100% ultra-fast DC · ₹22/kWh
Tip: Maximize home charging to save the most. Every 10% shift from public DC to home overnight saves about Rs. 220/month. Reserve fast charging for road trips only.
Annual cost
Yearly charging
Rs. 25,920
Yearly petrol
Rs. 1,26,000
Yearly saving
Rs. 1,00,080
5-year saving
Rs. 5.00 L
Smart charging tips
- Charge overnight at home using off-peak electricity rates (₹3-5/kWh in many states) for maximum savings.
- Install a 7.4 kW home wall box — full charge in 5-6 hours vs 12+ hours on a standard 3-pin plug.
- Use public DC fast chargers only for emergencies or road trips — they cost 2-3× more than home charging.
- Many workplace chargers are free or subsidized — check if your office provides EV charging.
- Charge to 80% daily — the last 20% is slower and no cheaper. Save 100% charges for long trips.