KiDi Solar · EV Charging
EV Charging Costs in Spain: Solar vs Grid vs Public
Compare what it costs to charge an electric car at a public charger, from the home grid and from your own solar panels with a battery. Use the calculator with your own numbers. Every assumption is shown.
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The Problem
Three Ways to Charge, Three Very Different Costs
Where you charge changes the price per kWh a lot, and how long you wait.
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Public charger
Slow AC points cost about €0.25–0.35 per kWh and fast DC about €0.45–0.79. You also need to drive there and wait.
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Standard socket
A normal socket delivers about 2.3 kW. A 57 kWh battery takes roughly 25 hours to fill, before losses.
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Home charger + solar
A home EV charger on a solar system can use your own daytime energy, and a battery can carry it to the evening.
Calculator
Cost to Charge an EV at Home in Andalucía: Your Numbers
Change the figures to match your car and your home. Results update instantly.
Step 1 · Your driving
Step 2 · What charging costs
Energy cost of charging only. Solar energy has no fuel cost, but the panels, battery and charger are an investment and some charging still comes from the grid. The result depends on the figures you enter and the assumptions below.
Step 3 · Get your exact quote
How We Calculate
Assumptions and Sources
Nothing is hidden. These are the figures behind the calculator.
| Input | Value used | Source |
|---|---|---|
| Public charging price | €0.55 per kWh by default, editable (AC slow €0.25–0.35, DC fast €0.45–0.79) | Electromovilidad24, 2026 charging costs |
| Home grid price | €0.20 per kWh by default, editable (PVPC off-peak €0.08–0.12, flat €0.15–0.20, peak €0.22–0.30) | Electromovilidad24, 2026 charging costs |
| Car consumption | 15 kWh per 100 km, editable | Tesla Model 3 RWD: 11.1 kWh/100 km WLTP, 14.4 including charging losses (EVKX specifications) |
| Car battery | 57 kWh usable, editable | EVKX specifications, Model 3 RWD |
| Standard socket | About 2.3 kW (10 A at 230 V). Endesa lists 26–30 hours for a 60 kWh battery | Endesa |
| Home charger | 7.4 kW (32 A single phase) | Standard rating of a single-phase home charger |
| Share from your own solar | 70% by default, you set it | KiDi Solar planning assumption. It depends on panel size, battery and when you charge |
Scenario A: all charging at the public price. Scenario B: all charging from the home grid. Scenario C: your own solar covers the share you enter and the grid covers the rest at the home price.
Power Cuts
EV Charging and Blackouts
Backup
Hybrid inverter with backup output
With the Growatt WIT 10K-HU, chosen circuits keep running during a grid outage. See our backup power page.
Design
Charger on the backup board or not
Charging a car is a large load that can drain a home battery quickly. We decide with you at the survey whether the charger goes on the backup circuits.
Install
EV charger installation in Marbella
We install home EV chargers across Marbella and the Costa del Sol. See our EV charger installation page.
FAQ
Frequently Asked Questions
Yes. A home EV charger on a solar system can use daytime solar energy, and a battery can store surplus for the evening. How much of your charging solar covers depends on your panels, your battery and when the car is plugged in.
It depends on your tariff and the time of day. Recent PVPC figures put off-peak at about €0.08–0.12 per kWh and a typical unoptimised household average at €0.18–0.23. Use the calculator above with your own price.
A standard household socket delivers about 2.3 kW, so a 57 kWh battery takes roughly 25 hours before charging losses. Endesa lists 26–30 hours for a 60 kWh battery. A 7.4 kW home charger takes about 8 hours for the same battery.
No. Solar energy has no fuel cost, but the panels, battery and charger are an investment, and some charging will still come from the grid at night or on cloudy days. The calculator shows energy cost only.
Only if it is connected to the backup circuits. Charging a car is a large load that can drain a home battery quickly, so we decide at the design stage whether the charger goes on the backup board. See our backup power page.
Yes. See our EV charger installation page for Marbella and the Costa del Sol.
Free Solar Survey
FREE EV CHARGING ASSESSMENT
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- Electricity consumption review
- Battery capacity recommendation
- Hybrid inverter compatibility check
- Backup options for selected circuits
- Written battery storage proposal
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