Vietnam Solar Battery Calculator
Store Vietnam's abundant sunshine for reliable home power
Why go solar + battery in Vietnam?
Vietnam is one of the fastest-growing economies in Southeast Asia, and electricity demand is rising at over 10% per year. EVN tariffs, while still relatively low at ~₫2,000/kWh, have been increasing steadily to fund new power plants and grid upgrades. For homeowners, solar + battery is a way to lock in lower energy costs and gain energy independence.
Vietnam's solar resource varies significantly by region. The south (Ho Chi Minh City, Mekong Delta) receives 5.0+ kWh/m²/day — comparable to Thailand — while the north (Hanoi, Haiphong) gets only 3.0-3.5 due to cloudy winters. Battery storage is especially valuable in the north, where winter solar output is low and grid demand peaks.
Key advantage: Vietnam has a thriving rooftop solar market with strong government support (Decision 13/2020 on net metering). While net metering policies have been adjusted, self-consumption solar + battery remains highly viable. Many Vietnamese manufacturers offer competitive equipment prices.
Recommended system size
City Apartment
Townhouse
Villa / Large Home
Why Vietnamese are switching
- ✓ Rising EVN tariffs make solar more attractive every year
- ✓ Net metering allows excess solar to offset grid consumption
- ✓ Local manufacturing makes equipment more affordable
- ✓ Battery backup protects against grid instability and brownouts
Things to consider
- ⚠ Northern Vietnam's cloudy winters reduce solar output — size for worst month
- ⚠ Net metering policies have changed — verify current regulations
- ⚠ Tube house rooftops can be small — measure your available area first
- ⚠ Installation quality varies — choose certified installers with warranties