Solar panels generate electricity during the day. Your home consumes electricity around the clock. This mismatch is the single biggest reason why battery storage and EV charging are transforming from optional upgrades into essential components of a modern Singapore solar system.
In 2026, the equation is simple: solar panels alone save you money during daylight hours. Solar panels plus battery storage save you money all day, every day. Add EV charging, and your entire energy and transport ecosystem runs on sunshine. This is not a future scenario — it is happening right now on rooftops across Singapore.
This guide covers everything you need to know about integrating battery storage and EV charging into your solar system, from the technology and costs to the real-world savings and the bigger picture of what it means for Singapore’s energy security.
Why Battery Storage Changes Everything
Without a battery, your solar system exports surplus daytime generation to the grid through net metering. You receive credits, but the buy-back rate is lower than the retail electricity price. You are effectively selling your solar energy cheap and buying grid energy expensive in the evening.
A home battery flips this dynamic. Instead of exporting surplus solar at low rates, you store it and use it at night when electricity rates are highest. The result: dramatically higher self-consumption ratios and significantly lower grid dependence.
Typical impact of adding battery storage:
- Without battery: 30–50% solar self-consumption (rest exported to grid)
- With battery: 70–90% solar self-consumption
- Effective savings increase: 30–50% more savings versus solar-only
- Grid independence: Potential to cover 80–95% of household electricity needs
For a deeper dive into whether battery storage makes financial sense for your situation, read our analysis on whether solar batteries are worth the investment.
Battery Technologies Available in Singapore (2026)
Lithium Iron Phosphate (LFP)
LFP is the dominant chemistry for home batteries in 2026, and for good reason. LFP cells offer exceptional cycle life (4,000–6,000 cycles versus 2,000–3,000 for NMC), superior thermal stability (virtually no risk of thermal runaway), and no cobalt — making them more ethical and supply-chain secure.
The trade-off is lower energy density compared to NMC, meaning LFP batteries are physically larger. For Singapore homes where the battery sits in a utility area or garage, this is rarely a limitation.
Nickel Manganese Cobalt (NMC)
NMC batteries pack more energy per kilogram, resulting in sleeker, wall-mountable units. Tesla’s Powerwall and several other premium brands use NMC chemistry. However, NMC has a shorter cycle life and requires more sophisticated thermal management — an important consideration in Singapore’s year-round heat.
Sodium-Ion (Emerging)
Sodium-ion batteries are entering the market as a cost-effective alternative. They use abundant, cheap materials (sodium versus lithium) and perform well in high temperatures. While energy density is lower than lithium chemistries, their cost per kWh is 20–40% lower. Watch this space — sodium-ion is expected to become viable for home storage by late 2026.
Top Home Battery Systems in Singapore
Tesla Powerwall 3
Capacity: 13.5 kWh. Integrated inverter. Sleek design. Strong brand recognition. The Powerwall remains the most recognisable home battery globally. However, availability in Singapore can be inconsistent, and the NMC chemistry means a shorter cycle life than LFP alternatives. Read our detailed Tesla Powerwall alternatives comparison.
BYD BatteryBox Premium
Capacity: 12.8 kWh (expandable to 25.6 kWh). LFP chemistry. Modular design allows adding capacity over time. Excellent cycle life warranty. BYD is the world’s largest battery manufacturer, bringing automotive-grade quality to home storage.
GoodWe Lynx Home
Capacity: 9.6–19.2 kWh. LFP chemistry. Tight integration with GoodWe inverters (used in several Sunollo systems). Competitive pricing with strong regional support.
Enphase IQ Battery
Capacity: 3.36 kWh per unit (stackable). LFP chemistry. Unique microinverter architecture means each battery unit is independent. Excellent for systems that prioritise redundancy and granular control.
For a complete pricing breakdown, see our home battery storage cost guide.
EV Charging: Turning Sunlight Into Kilometres
Singapore’s EV adoption is accelerating rapidly. The government’s target of 60,000 charging points by 2030 and the growing range of affordable EVs mean that within a few years, most new cars sold in Singapore will be electric.
If you already have solar panels, adding a home EV charger is the logical next step. Instead of paying $0.30–0.40/kWh at public charging stations, you charge your car with solar electricity that costs you effectively $0.
How Solar EV Charging Works
The principle is straightforward: your solar panels generate electricity during the day. A smart EV charger draws from this solar generation to charge your vehicle. With a battery, you can store daytime solar and charge your EV overnight — when the car is parked at home and electricity demand is lowest.
Typical Singapore EV charging economics:
- Average EV consumption: 15–18 kWh per 100 km
- Average Singapore driving distance: 40–60 km/day
- Daily charging need: 6–11 kWh
- Public charging cost: $2.40–$4.40/day
- Solar charging cost: Effectively $0 (marginal cost of existing solar system)
- Annual savings: $800–$1,600 on transport fuel alone
For installation details, read our complete EV charger installation guide.
Smart EV Chargers vs Basic Chargers
A basic Level 2 charger (7 kW) simply draws power whenever plugged in. A smart charger communicates with your solar system to optimise charging times — drawing maximum power during peak solar generation and reducing draw during low-generation periods or peak grid pricing.
Sunollo’s Abundance Pro system includes integrated EV charging that coordinates with the solar panels, battery, and LiveTrack monitoring app for fully automated energy management.
The Complete Energy Independence Stack
The most transformative configuration is what we call the complete energy independence stack: solar panels + battery storage + EV charging + smart energy management. Here is how the components work together:
- Morning (7–10am): Solar panels begin generating. House loads are powered directly by solar. Surplus begins charging the battery.
- Midday (10am–3pm): Peak solar generation. Battery reaches full charge. Surplus exported to grid for net metering credits. EV charging begins if the car is home.
- Afternoon (3–6pm): Solar generation tapers. House loads shift to battery power. Grid import minimised.
- Evening (6pm–12am): No solar generation. Battery powers the home. EV charges from stored solar energy overnight.
- Overnight (12–7am): Battery covers base loads. Any shortfall drawn from grid at off-peak rates.
With a properly sized system, 80–95% of your total household energy needs — including transport — come from your own rooftop. The remaining 5–20% is grid backup for consecutive overcast days or unusually high consumption.
Explore our complete bundle savings analysis for detailed cost and ROI projections.
Costs and Financing
Battery Storage Costs (2026 Singapore)
- 10 kWh system: SGD 8,000–12,000
- 15 kWh system: SGD 12,000–18,000
- 20 kWh system: SGD 16,000–24,000
Prices continue to fall as manufacturing scales. Battery costs have dropped approximately 40% since 2023 and are projected to fall a further 20–30% by 2028.
EV Charger Costs
- Level 2 charger (7 kW): SGD 1,500–3,000 (including installation)
- Smart charger with solar integration: SGD 2,500–4,500
Financing Options
Sunollo offers $0 upfront financing that covers the full system including battery and EV charging. Instead of a large capital outlay, you pay a fixed monthly subscription starting from $129/month for the complete Abundance Pro stack — panels, battery, EV charging, monitoring, and full warranty.
This means you can achieve energy independence with no out-of-pocket cost, and your monthly subscription is typically less than your current electricity bill. Read more about all financing options available in Singapore.
Energy Security: Why This Matters for Singapore
Singapore imports 95% of its energy. Natural gas arrives via pipelines from Malaysia and Indonesia, or as LNG from global markets. Any disruption — geopolitical tension, supply chain breakdown, price shock — directly impacts every household and business in the country.
Distributed solar with battery storage fundamentally changes this equation. When thousands of homes each generate and store their own energy, the nation develops a resilient, distributed energy grid that no single point of failure can bring down. Your home battery is not just a personal convenience — it is a cell in Singapore’s collective energy immune system.
Add EVs powered by stored solar, and Singapore begins to break free from oil dependence for transport as well. The entire energy chain — from generation to storage to consumption to mobility — runs on sunlight that falls freely on our island every day.
This is the vision driving Sunollo: solar for every home, batteries to store the energy, and a nation that powers itself — secure, green, and self-sufficient.
Getting Started with Battery and EV Charging
Whether you are adding storage to an existing solar system or planning a complete new installation, the process starts with understanding your energy consumption patterns and goals.
Book a free consultation with Sunollo. We will analyse your electricity usage, assess your property, and design a system that matches your needs — whether that is a solar-only setup to start or the complete energy independence stack from day one.
Already have solar? Explore adding battery storage and EV charging to your existing system. Already have an EV? Calculate how much you could save by charging it with solar. The path to energy independence starts with one step — take it today.
Continue reading: Solar Panel Cost Guide 2026 | Installation Guide | Compare Sunollo Packages
