What Is a Solar + Battery + EV Bundle in Singapore?
A solar + battery + EV bundle is an integrated home energy package that combines rooftop solar panels, a home battery storage system, and an electric vehicle charger into a single, optimised solution. Instead of purchasing each component separately — and paying three different installers — a bundle approach delivers lower total cost, seamless integration, and maximum energy savings for Singapore homeowners in 2026.
The logic is straightforward: solar panels generate free electricity during the day, the battery stores surplus energy for evening and overnight use, and the EV charger draws from that stored solar power to fuel your car at a fraction of grid electricity cost. When all three components work together through a unified inverter platform like SolarEdge EnergyHub, you unlock savings that are impossible to achieve with any single product alone.
With Singapore's solar panel costs dropping steadily and the nation targeting 45,000+ EVs on the road by 2026, bundling has shifted from a niche luxury to the smartest financial decision a landed-property homeowner can make.
How Much Does a Solar + Battery + EV Bundle Cost in Singapore?
A full solar + battery + EV bundle in Singapore typically costs between $22,000 and $38,000 before incentives, depending on system size and battery capacity. However, the bundle price is 15–25% lower than buying each component individually, because you share installation labour, inverter hardware, and electrical infrastructure across all three systems.
| Package | Components | Typical Cost (Before Incentives) | Annual Savings | Payback Period |
|---|---|---|---|---|
| Solar Only (8 kWp) | Solar panels + grid-tied inverter | $14,000 – $18,000 | $2,400 – $3,200 | 5 – 6 years |
| Solar + Battery | Solar panels + 10 kWh battery + hybrid inverter | $22,000 – $28,000 | $3,200 – $4,800 | 5 – 7 years |
| Full Bundle (Solar + Battery + EV) | Solar panels + 10 kWh battery + hybrid inverter + EV charger | $24,000 – $34,000 | $4,000 – $8,000 | 4 – 6 years |
Sunollo's Abundance Pro package starts from $16,000 with battery-ready architecture included, and a $0 upfront option is available from $129/month — making the full bundle accessible without a large capital outlay.
How Much Can You Save Charging an EV With Solar vs Grid Electricity?
Charging your EV with solar electricity costs approximately 8¢ per kWh, compared to 31¢ per kWh from the SP Group grid — a saving of roughly 74% on every kilometre you drive. For a typical Singapore household driving 20,000 km per year, this translates into annual fuel savings of $700 to $920.
| Metric | Grid Charging | Solar + Battery Charging | Savings |
|---|---|---|---|
| Electricity cost per kWh | $0.31 | $0.08 | $0.23/kWh |
| EV consumption (per 100 km) | 12 – 15 kWh | 12 – 15 kWh | — |
| Annual EV consumption (20,000 km) | 3,000 – 4,000 kWh | 3,000 – 4,000 kWh | — |
| Annual charging cost | $930 – $1,240 | $240 – $320 | $690 – $920 |
| 10-year charging cost | $9,300 – $12,400 | $2,400 – $3,200 | $6,900 – $9,200 |
The battery component is critical here: most EV owners charge overnight when solar panels are not generating. A home battery system captures daytime solar surplus and releases it at night, ensuring your EV charges on clean, free energy even while you sleep.
What Are the Total Annual Savings From a Full Bundle?
A complete solar + battery + EV bundle delivers $4,000 to $8,000 in combined annual savings across three revenue and cost-reduction streams. Here is the full breakdown:
| Savings Category | Annual Amount | How It Works |
|---|---|---|
| Electricity bill reduction (solar self-consumption) | $2,400 – $3,600 | Solar panels offset 70–90% of daytime household electricity use |
| EV fuel savings (solar vs grid charging) | $690 – $920 | Charging at 8¢/kWh vs 31¢/kWh for 20,000 km/year |
| Battery arbitrage & peak shaving | $400 – $800 | Store cheap solar energy, discharge during expensive peak periods |
| Excess solar export (net metering) | $300 – $600 | Sell surplus solar back to the grid at prevailing tariff |
| Avoided petrol/diesel costs | $1,800 – $3,200 | EV replaces ICE vehicle; petrol costs rising with carbon tax |
| Total Annual Savings | $4,000 – $8,000+ |
These figures are conservative and based on current 2026 SP Group tariffs. As Singapore's carbon tax escalates from $25/tonne in 2024 to $45/tonne in 2026 and $50–80/tonne by 2030, grid electricity and petrol costs will only increase — making your bundle savings grow larger every year.
Why Does a Battery Matter for EV Charging?
A home battery is the missing link that makes solar-powered EV charging practical. Without a battery, your solar panels only generate power during daylight hours (roughly 6 AM – 6 PM), but most EV owners plug in their car at night. The battery bridges this timing gap by storing 8–15 kWh of daytime solar surplus and releasing it overnight to charge your EV.
Beyond EV charging, the battery provides several additional benefits:
- Backup power during outages: A 10 kWh battery can keep essential loads (lights, fridge, WiFi, phone chargers) running for 6–10 hours during a grid outage
- Peak shaving: Discharge stored energy during high-tariff evening hours instead of buying expensive grid power
- Maximise self-consumption: Without a battery, excess daytime solar is exported at lower net-metering rates; with a battery, you consume more of your own generation
- Future-proofing: As dynamic tariffs and time-of-use pricing become more common in Singapore, batteries become even more valuable
Choosing the right battery size is critical. Our battery sizing guide for Singapore walks you through the calculation based on your household consumption and EV charging needs.
What Equipment Powers a Solar + Battery + EV Bundle?
The best bundle systems in 2026 revolve around an integrated inverter platform that manages solar generation, battery storage, and EV charging through a single control unit. Here are the key components:
- Solar Panels (8–12 kWp): High-efficiency monocrystalline panels (e.g., Jinko Tiger Neo, LONGi Hi-MO 6) optimised for Singapore's tropical irradiance of 4.5–5.0 peak sun hours per day
- Hybrid Inverter — SolarEdge EnergyHub: The SolarEdge EnergyHub is purpose-built for integrated solar + battery + EV systems. It supports DC-coupled battery connections for higher round-trip efficiency, built-in EV charging support with smart scheduling, and module-level power optimisers for maximum panel yield
- Home Battery (10–15 kWh): Lithium iron phosphate (LFP) chemistry for longevity (6,000+ cycles), with 10-year warranties standard. Popular options include BYD Battery-Box and SolarEdge Home Battery
- EV Charger (7.4 kW – 22 kW): A smart Level 2 charger with solar-aware scheduling. The SolarEdge EV charger integrates directly with the EnergyHub inverter, automatically prioritising solar power and switching to battery or grid only when needed
- Smart Energy Management: App-based monitoring shows real-time solar generation, battery state-of-charge, EV charging status, grid import/export, and cumulative savings
Sunollo's Abundance Pro package includes battery-ready architecture from day one, so you can start with solar and add battery + EV charging later without rewiring or replacing your inverter.
Who Should Consider a Solar + Battery + EV Bundle in Singapore?
The full bundle delivers the strongest return on investment for homeowners who meet most of the following criteria:
- Landed property owners (bungalows, semi-detached, terraces) with unshaded roof space of 40 m² or more
- Current or planned EV owners — if you are buying or leasing an EV in the next 1–3 years, bundling the charger with solar and battery at installation saves significantly on labour and wiring
- Monthly electricity bills above $200 — higher consumption means faster payback from solar self-consumption
- Households with daytime and evening energy use — families with air-conditioning, home offices, and overnight EV charging benefit most from battery storage
- Homeowners planning to stay 5+ years — the bundle pays for itself within 4–6 years, with 20+ years of free energy thereafter
Even if you don't own an EV yet, installing battery-ready solar now (like the Abundance Pro) means you avoid costly retrofitting later when you make the switch.
How Does Singapore's Carbon Tax Affect Bundle Economics?
Singapore's carbon tax is a powerful tailwind for solar + battery + EV bundles. The tax directly increases the cost of fossil-fuel-generated grid electricity and petrol, making self-generated solar energy comparatively cheaper every year.
Here is the trajectory:
- 2024: $25/tonne CO₂ — already adds ~1.5¢/kWh to grid electricity
- 2026: $45/tonne CO₂ — adds ~2.7¢/kWh to grid electricity
- 2030: $50–80/tonne CO₂ — projected to add 3–5¢/kWh to grid electricity
For petrol vehicles, the carbon tax compounds with rising fuel duties, making the total cost of ownership for an ICE car increasingly expensive relative to an EV charged on solar. A household that switches from a petrol car to a solar-charged EV in 2026 avoids not just today's fuel costs, but the escalating carbon-tax surcharges over the vehicle's 10–15 year lifespan.
Read more about the carbon tax impact on solar economics in Singapore.
How Do You Get Started With a Bundle in Singapore?
Getting a solar + battery + EV bundle installed in Singapore follows a straightforward process:
- Site Assessment (Free): A Sunollo energy consultant visits your property to assess roof orientation, shading, electrical panel capacity, and EV charger placement. This typically takes 1–2 hours.
- Custom System Design: Based on your energy consumption data (from SP Group bills), EV usage patterns, and roof layout, Sunollo designs an optimised system with precise component sizing.
- Proposal & Financing: You receive a detailed proposal with system specifications, projected savings, payback timeline, and financing options — including the $0 upfront plan from $129/month.
- Permits & Approvals: Sunollo handles all regulatory paperwork, including EMA (Energy Market Authority) solar connection approval, BCA structural endorsement, and SP Group net-metering registration.
- Installation (3–5 days): Professional installation of panels, inverter, battery, and EV charger, followed by commissioning and grid connection.
- Monitoring & Support: Post-installation, you monitor your system via the SolarEdge app and receive ongoing performance support from Sunollo.
The entire process from initial consultation to system activation typically takes 6–10 weeks, with most of that time consumed by permit processing rather than physical installation.
Frequently Asked Questions
Can I install a solar + battery + EV bundle on a condo or apartment in Singapore?
Generally no. Solar + battery + EV bundles are designed for landed properties (bungalows, semi-detached, terraces) where you own the roof and have dedicated parking. Condo residents may explore community solar schemes or shared EV charging but cannot install individual rooftop systems. See our guide on solar options for condos and apartments.
How long does a home battery last before it needs replacing?
Modern lithium iron phosphate (LFP) batteries are warranted for 10 years and rated for 6,000+ charge cycles. At one cycle per day, that translates to approximately 16 years of service life. Most homeowners can expect 12–15 years of effective use before capacity degrades below 70%, at which point a replacement battery module (likely cheaper by then) can be swapped in without changing the inverter or wiring.
What happens if my solar panels generate more electricity than I can use or store?
Excess solar electricity is automatically exported to the SP Group grid through Singapore's net-metering scheme (also called the Simplified Credit Treatment). You receive a credit on your electricity bill at the prevailing low-tension tariff rate — currently around 31¢/kWh. The battery helps minimise exports by storing surplus for later self-consumption, which is financially more advantageous than exporting.
Is it cheaper to buy components separately or as a bundle?
A bundle is almost always cheaper — typically 15–25% less than purchasing solar, battery, and EV charger individually. The savings come from shared installation labour (one crew, one mobilisation), a single hybrid inverter instead of separate units, combined electrical infrastructure upgrades, and reduced permit and design fees. Additionally, a unified system from one provider simplifies warranty claims and ongoing support.
Can I start with solar only and add battery and EV charger later?
Yes, this is a practical approach. Sunollo's Abundance Pro package includes battery-ready architecture — meaning the inverter, wiring, and switchboard are pre-configured to accept a battery and EV charger in the future without costly retrofitting. However, adding components later does cost slightly more than installing everything at once due to a second site visit and additional labour.
How much roof space do I need for a solar + battery + EV bundle?
A typical 8 kWp solar system requires approximately 40–48 m² of unshaded roof area (about 20 panels). The battery and EV charger are ground-mounted or wall-mounted and require roughly 1–2 m² of wall or floor space in your garage, utility room, or carport. Most Singapore landed homes with standard roof areas of 60–120 m² have more than enough space.
Do I need to upgrade my electrical panel for a full bundle?
In most cases, a minor upgrade is required. Older homes with 40A single-phase supply may need an upgrade to 63A or a three-phase connection to support the combined load of solar inverter, battery, and a 7.4 kW+ EV charger. Sunollo includes an electrical assessment as part of the free site survey and handles any necessary upgrades as part of the bundle installation. Upgrade costs, if needed, are typically $500–$1,500.
What warranties come with a solar + battery + EV bundle?
A comprehensive bundle from Sunollo includes: solar panel product warranty of 12–25 years (depending on manufacturer), solar panel performance warranty guaranteeing at least 80% output at 25 years, inverter warranty of 12 years (extendable to 20–25 years), battery warranty of 10 years, and EV charger warranty of 3–5 years. Sunollo also provides a workmanship warranty covering installation quality for 10 years.
Sources
- Energy Market Authority (EMA) Singapore — Solar PV installation guidelines and net-metering framework (2026)
- SP Group — Electricity tariff schedules and Simplified Credit Treatment for solar exports (Q1 2026)
- Land Transport Authority (LTA) Singapore — EV population statistics and charging infrastructure plan (2026)
- Ministry of Sustainability and the Environment (MSE) — Carbon tax trajectory and Green Plan 2030 updates
- SolarEdge Technologies — EnergyHub inverter and integrated EV charging specifications
- Sunollo — Abundance Pro package specifications and pricing (April 2026)
