Essential backup
3–8 kWh/day · 5–10 kWh · 3–5 kW
Lights, router, fridge, electronics
LITHVOLT ACADEMY GUIDE
Home solar and storage
Begin with 12 months of bills or a measured load profile. Separate “energy per day” from “instantaneous power” and decide which circuits truly require backup.
Typical home
8–18 kWh/day · 10–20 kWh · 5–8 kW
Essential circuits plus selected kitchen/office loads
Large / electric home
18–35 kWh/day · 20–40 kWh · 8–15 kW
High simultaneous loads; split-phase/three-phase study
Weak-grid / off-grid
Measured load × autonomy · 2–3 days reserve · Peak + motor surge
Add generator or controlled load shedding
Non-negotiable design checks
1
Survey roof/ground, shade, structure, local utility rules and earthing system.
2
Group compatible panels into strings; verify cold Voc and Isc before selecting PV isolators, protection and MPPT.
3
Connect battery through a correctly rated DC fuse/breaker and disconnect close to the source; size cable for ampacity and voltage drop.
4
Use an approved inverter/charger whose battery voltage, AC output, surge, communication and grid mode match the project.
5
Configure BMS/inverter charge limits, commissioning tests, emergency shutdown, labels and monitoring.
6
Grid-connected and high-voltage work must be designed, permitted and commissioned by qualified local professionals.
Educational planning guidance—not a final electrical design, compliance declaration or installation instruction. Local rules and exact manufacturer data take precedence.
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