Representative site · Manufacturer with rooftop PV
Picture a factory with a 1 MWp rooftop solar array. Around midday the panels generate more than the site consumes, and roughly 300 kWh a day is exported to the grid for a modest net-metering credit. A few hours later, in the evening peak, the same site buys power back from the grid at the full rate.
Selling solar cheap, buying grid dear
Self-consumed solar offsets power at the full retail rate; exported solar earns only a net-metering credit. Every kilowatt-hour sent to the grid at midday and bought back in the evening loses the difference between the two.
Each kWh you consume yourself is worth more than the same kWh exported under net energy metering.
How UniBess solves it
The EMS prioritises your own generation — serve the load first, store the surplus, lean on the battery before the grid once the sun is down.
Use solar first
Whenever the panels produce, that power runs the site directly — the cheapest electricity you’ll ever have.
Store the surplus
When midday generation exceeds load, the extra charges the battery instead of being exported for a low credit.
Discharge into the peak
As demand climbs and the sun fades, the stored solar comes back out — covering the evening peak with your own power.
More value from the panels you already own
No new panels, no change to the array — the battery simply stops your own clean power leaking out cheap at midday, and puts it to work when it’s worth the most.
- ~300 kWh/day exported cheap
- Evening peak bought from grid
- Solar value capped by export rate
- Surplus stored, not exported
- Evening peak served by solar
- Same energy also shaves demand
Is this your site?
Solar-plus-storage suits sites whose array outruns the daytime load, or whose demand peaks after the sun fades. You’ll likely benefit if:
- Your rooftop exports meaningful surplus at midday.
- Your load peaks in the late afternoon or evening.
- You’re on net energy metering and export more than you’d like.
- You want maximum self-sufficiency from existing or planned PV.
Where we're honest
Storage improves solar economics, it doesn’t rewrite them. The gain depends on how much surplus you export today and your tariff under net energy metering — we model your real generation and load before promising a number.