Solar Estimator
Select a power station and panel setup to see how quickly solar can recharge your battery — and whether it can keep up with your daily energy use.
Power station
Panel & sun conditions
Total rated wattage of your panel array. Real-world output is usually 65–85% of this figure.
Peak sun hours
4.5 h/dayDesert Southwest / summer: High. Pacific Northwest / winter: Low. Most of the US averages 4–5 h/day.
Charge range
Daily energy useOptional
How much energy you consume per day. Unlocks daily harvest coverage (%) and panel size recommendation. Leave blank to skip.
Real-world efficiency
Accounts for heat, angle, wiring, and conversion losses.
Estimated recharge
How much peak solar time your setup needs
Solar input breakdown
How your rated panel wattage is reduced to an effective charge input.
Ready to go solar with EcoFlow DELTA Pro Ultra?
Some links may be affiliate links. GridMatch may earn a commission if you buy through them, at no extra cost to you.
How solar estimates work
A 200W panel only hits 200W under ideal lab conditions. Heat, angle, and shade reduce real-world output — this tool applies an efficiency factor (default 75%) to account for that. Your station also caps solar input, so connecting more panels than its limit won't speed up charging. Peak sun hours vary by location: desert Southwest summers can hit 6+ h/day, cloudy northern winters as low as 2 h/day. For conservative estimates, use the "Low" sun preset or drop the efficiency factor.
Want to see how long your battery will last on a single charge?