VumaTech energy journal
Understand your power.
Choose with confidence.
Practical, South African answers about electricity use, solar, storage and system design—published every Tuesday and Thursday.
Latest guideSystem design8 min read
What Size Solar System Does a South African Home Need?
Understand kW vs kWh, load profiles, roof limits and expansion to choose the right solar system size for your South African home. Practical, honest advice.
8 October 2026Read the guide →
The knowledge centre
Useful before you buy.
Useful after we install.
Built around real South African questions—not generic sales content.
Battery storage8 min
What size battery do you need for load shedding?
A practical way to estimate usable battery capacity for lights, internet, refrigeration and other essential South African household loads.
8 October 2026Read →
Energy basics7 min
How to read your prepaid meter’s kWh—and size solar from it
Turn the units on your South African prepaid meter into a useful daily energy profile before choosing an inverter, battery or solar array.
6 October 2026Read →
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