Storage for Markets Where the Grid Drops Every Day
Stage 4–6 load shedding means 8–12 hours without power, every day. A generator is loud, expensive and needs fuel you may not be able to buy. A UPS lasts minutes, not hours.
What Actually Happens During Load Shedding
| Load | Runtime on 15.36 kWh | Runtime on 30.72 kWh |
|---|---|---|
| Fridge + freezer (150 W avg) | ~85 h | ~170 h |
| Lights + router + TV (250 W) | ~52 h | ~105 h |
| Above + security + borehole pump (800 W) | ~17 h | ~35 h |
| Whole house including geyser (2,500 W) | ~5 h | ~11 h |
Figures assume 90% depth of discharge and no solar input. With a 5 kW PV array, daytime loads are carried by solar and the battery refills before the evening outage.
The Configuration
| Component | Specification |
|---|---|
| Inverter | APOLLO C, 6 kW or 12 kW, pure sine wave |
| Storage | 15.36 kWh or 30.72 kWh LFP, 51.2 V |
| Transfer time | 10 ms — no reboot on computers or routers |
| Depth of discharge | 95% usable |
| Cycle life | 8,000 cycles at 90% DoD |
| Warranty | 10 years / 70% capacity |
| Certification | CE (LVD, EMC, RoHS), IEC 62619, UN38.3 |
How to Size It
Add up the watts of everything you want to keep running, multiply by the hours you need, divide by 0.9. That is your kWh. Then check the peak — a fridge compressor and a borehole pump starting together can pull three times their running watts.
Most households that want the fridge, lights, router, TV and security to survive an 8-hour outage land on 15.36 kWh. Households that want the geyser or air-conditioning to keep running land on 30.72 kWh or two units in parallel.
The Certification Boundary
APOLLO C is a backup and off-grid system. It does not carry EN 50549, VDE-AR-N 4105, G99 or CEI 0-21, so it cannot be configured for grid export in the EU or UK. It runs your loads, charges from solar or grid, and does not push power back.
For most weak-grid markets this is exactly the requirement. If your project needs export, tell us on the first call.
Send Us Your Load List
Appliance, running watts, hours per day, and how many hours of autonomy you need. We will return a sizing sheet.