Paano Kalkulahin si Solar EV Charging
Ano ang Solar EV Charging?
The Solar Panel EV Charging Calculator estimates how many solar panels you need to fully offset the electricity used to charge your electric vehicle at home, turning your EV into a truly zero-emission vehicle.
Pormula
Panels Needed = Annual EV kWh Consumption / (Panel Wattage x Peak Sun Hours x 365 x 0.80)
- Eev
- Annual EV Energy Use (kWh/year) — Total electricity your EV consumes per year
- Wp
- Panel Wattage (watts (W)) — Rated output of each solar panel under standard test conditions
- PSH
- Peak Sun Hours (hours/day) — Equivalent hours of full-strength sunlight per day at your location
- SF
- System Factor (dimensionless) — Efficiency multiplier accounting for inverter, wiring, and soiling losses (typically 0.75-0.85)
Step-by-Step na Gabay
- 1Calculate your annual EV energy consumption from miles driven and efficiency
- 2Enter your location peak sun hours (3-6 hours/day depending on region)
- 3Input solar panel wattage (typically 370-430W per panel)
- 4The calculator determines panels needed after accounting for 20% system losses
Mga Nalutas na Halimbawa
Input
12,000 mi/yr, 3.5 mi/kWh, 400W panels, 5 peak sun hours (Arizona)
Resulta
3,429 kWh needed / (400 x 5 x 365 x 0.80) = 5.9 panels, round up to 6 panels
Input
12,000 mi/yr, 3.5 mi/kWh, 400W panels, 3.5 peak sun hours (Seattle)
Resulta
3,429 kWh needed / (400 x 3.5 x 365 x 0.80) = 8.4 panels, round up to 9 panels
Mga Karaniwang Mali na Dapat Iwasan
- ✕Forgetting to account for system losses (inverter efficiency, wiring, soiling) which reduce output by 15-25%
- ✕Using global peak sun hours instead of your specific location and roof orientation values
- ✕Not considering that solar generation peaks midday while EV charging typically happens overnight — net metering or battery storage is needed
Mga madalas itanong
How many solar panels do I need to charge my EV?
Typically 5-10 panels (2-4 kW system) depending on your location and driving habits. The average US driver (12,000 mi/yr) needs about 3,400 kWh/year, which requires 6-9 standard 400W panels.
Can I charge my EV directly from solar panels?
Not directly in most setups. Solar panels feed the grid or a home battery during the day, and your EV charges from the grid at night. Net metering credits offset the cost, making it effectively solar-powered.
Handa nang kalkulahin? Subukan ang libreng Solar EV Charging Calculator
Subukan ito sa iyong sarili →