Adding battery storage to a solar system is one of the most impactful upgrades a Singapore homeowner can make — but it is also one of the most frequently misunderstood in terms of cost. Prices vary widely based on capacity, chemistry, brand, and installation complexity. This guide breaks down exactly what you should expect to pay in 2026.
Battery Storage Price Ranges (2026 Singapore)
Prices include the battery unit, compatible hybrid inverter (if required), installation labour, wiring, and commissioning:
- 5 kWh system: SGD 5,000–7,500
- 10 kWh system: SGD 8,000–12,000
- 13.5 kWh system (Powerwall-class): SGD 12,000–16,000
- 15 kWh system: SGD 12,000–18,000
- 20 kWh system: SGD 16,000–24,000
- 25+ kWh system: SGD 20,000–30,000+
These prices reflect a 30–40% drop from 2023 levels, driven by massive manufacturing scale-up in China and the global shift from NMC to cheaper LFP chemistry.
What Drives the Cost
Battery Chemistry
LFP (Lithium Iron Phosphate) batteries are now 15–25% cheaper per kWh than NMC equivalents, while offering longer cycle life. This cost advantage, combined with superior safety, has made LFP the default for new installations in Singapore. Read our battery comparison guide for chemistry details.
Capacity Sizing
The right battery size depends on your evening and overnight electricity consumption. A typical Singapore landed home consumes 15–25 kWh per day, with 8–15 kWh of that occurring after sunset. A 10–15 kWh battery covers most evening needs while remaining cost-effective.
Oversizing is wasteful — a 25 kWh battery in a home that only uses 10 kWh overnight will rarely fully cycle, reducing the return on investment. Undersizing means continued grid dependence in the evenings.
Installation Complexity
Retrofitting a battery to an existing solar system costs more than including it in a new installation. Existing systems may need inverter upgrades, new wiring, or electrical panel modifications. New builds with integrated battery planning are typically 10–20% cheaper.
Inverter Requirements
Batteries require a hybrid inverter capable of managing both solar input and battery charge/discharge. If your existing system has a standard solar inverter, it may need to be replaced or supplemented with a battery-specific inverter — adding SGD 2,000–4,000 to the project.
Cost Per kWh: The Real Metric
Rather than comparing total system prices, evaluate cost per usable kWh of storage. In 2026 Singapore:
- Budget LFP systems: SGD 800–1,000 per kWh
- Mid-range LFP systems: SGD 1,000–1,300 per kWh
- Premium systems (Tesla, Sonnen): SGD 1,200–1,600 per kWh
When evaluating cost per kWh, factor in cycle life. A battery at SGD 1,000/kWh lasting 6,000 cycles delivers a cost of SGD 0.17 per kWh cycled. A battery at SGD 1,200/kWh lasting only 3,000 cycles costs SGD 0.40 per kWh cycled — more than double. Read our payback period analysis for full ROI calculations.
$0 Upfront Battery Options
Sunollo’s subscription model eliminates the upfront cost entirely. The Abundance Pro system includes battery storage in the monthly subscription — from $129/month with $0 down. This means you get panels, battery, EV charging, monitoring, and full warranty for less than most households currently pay for electricity alone.
This financing model makes battery storage accessible to every homeowner, not just those with SGD 10,000–20,000 in spare capital.
Will Prices Keep Falling?
Yes. Battery costs are projected to fall a further 20–30% by 2028 as LFP manufacturing capacity continues expanding and sodium-ion batteries enter the market. However, waiting has a cost too: every month without storage is a month of solar energy exported at low grid rates instead of consumed at full value.
The optimal strategy for most homeowners is to install a right-sized battery now and benefit from savings immediately, rather than waiting for marginally lower future prices while paying higher electricity bills.
Get a personalised battery quote from Sunollo — we will recommend the right capacity for your consumption patterns and show you the exact payback timeline.
Continue reading: Complete Battery & EV Guide | Battery Comparison | Financing Options
