Most smart chargers only think about now. They check the price, check your battery, and decide whether to charge. That works fine on a grey winter night. But if you've got solar panels on your roof, "now" is the wrong question, because the sun is coming up in a few hours, and most of that free, clean power will go to waste if your car is already full by the time it arrives.
Gridio's new next-day solar charging fixes that. Every evening, before your car starts charging, Gridio looks at tomorrow's solar forecast for your address and plans around it, so more of your charge comes from your own roof and less from your utility bill.
How it works
Next-Day Solar Charging – How It Works
What Gridio does every evening, before you ever notice
Step 1
Check tomorrow's solar forecast
Same weather and panel-orientation modelling grid operators rely on, run for your exact address.
Step 2
Work out what your car can use
After the house takes its share, based on your car's charging speed and when it's actually home.
Step 3
Plan less grid charging overnight
Leaves room in tonight's schedule so tomorrow's sun can finish the job, right up to your deadline.
You still set the one thing that matters: when the car needs to be ready. That deadline never moves. Gridio just gets smarter about how it fills it.
A Tuesday night, two ways
Say it's Tuesday evening. Your car's at 40%, and you need it at 90% by 7 a.m. Wednesday.
Without next-day solar: the charger fills the battery from the grid sometime overnight. You wake up to a full car, paid for entirely with grid electricity.
With next-day solar: Gridio sees Wednesday looks sunny between 8 and 11 a.m. It charges partway overnight on the cheapest grid hours, then leaves headroom so your panels can finish the job once the sun's up. Same 7 a.m. deadline, same full battery, but more of those kilometres came off your own roof.
If the sun doesn't show up, Gridio checks real solar output every few minutes and tops up from the grid before your deadline. Your car always leaves fully charged — the schedule above is what usually happens, not a promise about the weather.
What if the forecast is wrong?
Weather changes its mind. So Gridio watches actual solar production through the morning and compares it against what was predicted. If the sun underperforms, an unexpected cloud front, a grey morning that wasn't in the forecast, the system quietly tops up from the grid before your deadline.
Your car always leaves fully charged. The only thing you'd lose is a solar bonus that was never going to show up anyway. This check runs every few minutes, which is what turns "nice forecast" into "something you can build your morning around."
What you actually get
Next-Day Solar Charging – Benefits
Lower electricity bills
Every kilowatt-hour from your own panels is one you don't buy from the grid.
More of your solar used where it counts
Exporting surplus back to the grid usually pays a fraction of what buying it back costs. Sending it straight into your car is simply better economics.
Lower-carbon kilometres
Sun-powered instead of grid-mix.
Nothing to manage
Set your ready-by time once. Gridio handles the rest, every single night.
You're still the one in control
Set a daily ready-by time, or a different one for each day of the week.
Turn it on or off per car. Prefer pure price-based charging without the forecast? One toggle away.
Real-time solar capture keeps working during the day too. If your panels are producing more than the house needs while you're home, your car gets first call on it.
Inverter connectedPair your solar inverter in seconds – no hardware, no electrician
Your settings, your rulesSet your solar threshold and ready-by time – Gridio does the rest
Solar charging activeGridio tracks your live solar output and adjusts charging in real time
FAQ
Next-Day Solar Charging – FAQ
No. Set your ready-by time the way you always have. Gridio takes it from there.
No. The forecast only makes the plan better, never riskier. If the day turns out cloudier than expected, Gridio falls back to grid charging in time to hit your deadline regardless.
Next-day solar only kicks in if you have a solar installation. Without one, Gridio still charges at the cheapest grid hours available.
Yes, spot prices, time-of-use, or grid-fee tiers. Gridio combines tomorrow's solar forecast with your actual tariff and finds the best combination of the two.
Supported solar inverters
SolarEdgeSMAFroniusHuaweiFerroampGrowattKostalSofarSolaxSolisSungrow+ more coming
Don't see yours? Email support@gridio.io and the team will prioritise adding it.