Estimated reading time: 22 minutes | Last updated: February 2026
If you’re searching “how much do solar panels cost in Singapore?” you’ll find a dozen answers. Most are vague. Some are outdated. A few are deliberately misleading.
This guide is none of those things.
We’re going to give you the real numbers: what solar costs in Singapore in 2026, what’s included, what’s hidden, how it breaks down by property type, how it compares to five years ago, and — most importantly — what it actually costs you per kilowatt-hour over 25 years. Because that last number is the one that matters, and it’s the one nobody else shows you.
Every figure in this guide is based on current Singapore market pricing as of Q1 2026, sourced from installer quotes, industry data, and Sunollo’s own project portfolio.
How Solar Costs Have Changed: 2016 to 2026
Before we talk about today’s prices, context matters. Solar has undergone one of the steepest cost declines of any technology in history.
In a decade, the cost of residential solar in Singapore has dropped by approximately 65%. A system that cost S$45,000 in 2016 now costs under S$18,000 for equivalent output — with better panels, better inverters, and longer warranties.
The decline is driven by three forces: massive global manufacturing scale (China now produces over 80% of the world’s panels), improved cell efficiency (from 17–18% to 21–23%), and a competitive Singapore installer market with over 50 licensed residential providers.
The cost of solar has already fallen. The cost of not going solar rises every quarter with electricity tariffs.
Solar Panel Cost in Singapore 2026: The Headline Numbers
In 2026, a fully installed residential rooftop solar system in Singapore costs:
S$1,000 – S$1,300 per kWp
This is the all-in price. It includes solar panels, inverter, power optimisers (where applicable), mounting structure, all electrical work, monitoring system, EMA and SP approvals, and standard warranties.
The range exists because not all systems are equal. Where you land within it depends on panel technology, inverter brand, roof complexity, and the installer’s value proposition. We’ll break down each factor in detail below.
What Does kWp Mean?
kWp stands for kilowatt-peak — the maximum power output of a solar panel or system under standard test conditions (full sun, 25°C). It’s the industry-standard unit for sizing and pricing solar systems.
A 10 kWp system in Singapore will produce approximately 12,000–14,000 kWh of electricity per year. That’s enough to offset 60–80% of a typical semi-detached home’s annual consumption.
Cost by Property Type: Terrace, Semi-D, Bungalow and GCB
Your property type determines how much roof space you have, which determines how large a system you can install, which determines total cost. Here’s the full breakdown:
Terrace Houses
Terrace homes are the most common landed property type in Singapore. Roof space is the main constraint — inter-terrace units typically have a single-slope or dual-slope roof of 30–45 m². Corner terraces often have 40–55 m² due to a secondary roof surface.
Despite the smaller system size, the economics are strong. A 7–8 kWp system on a terrace typically eliminates 50–70% of the electricity bill and pays for itself in under 5 years.
Semi-Detached Houses
Semi-detached homes are the sweet spot for residential solar in Singapore. Larger roof area allows for bigger systems, and higher household consumption (often driven by more air-conditioning units, a pool pump, or EV charging) means more of the solar production is self-consumed at retail rates rather than exported at wholesale.
Bungalows and Good Class Bungalows (GCBs)
Bungalows and GCBs have the most to gain. High consumption (often S$800–S$1,500/month) combined with expansive roof area means systems of 20–35 kWp are common. The total cost is higher, but the payback is often faster because so much more production is self-consumed at premium retail rates.
A GCB homeowner paying S$1,200/month in electricity can realistically reduce that to under S$200/month with a 30 kWp system — saving over S$12,000 per year.
What’s Included in the Price: A Full Itemised Breakdown
When an installer quotes you S$1,000–S$1,300 per kWp, this is what should be inside that number. If any of these are listed as “extras”, you’re being upsold.
A Worked Example: 10 kWp System for a Semi-Detached Home
This is a mid-to-premium specification. You can go lower with a basic string inverter and no optimisers (S$1,000–S$1,300/kWp), or higher with IBC panels and an extended inverter warranty (S$1,500–S$2,000/kWp).
What Affects the Price: The 7 Key Variables
Not all solar installations cost the same. Here are the factors that move the needle:
1. Panel Technology and Brand
Brand matters too. Tier-1 manufacturers (Aiko, Maxeon, LONGi, Jinko, Trina, Canadian Solar) command a premium over lesser-known brands, but they come with bankable warranties, proven degradation rates, and global supply chain support.
2. Inverter Type
Sunollo installs SolarEdge, Sungrowinverters with power optimisers as standard. This delivers the best balance of performance, monitoring, safety features (rapid shutdown, arc-fault detection), and long-term value.
3. Roof Complexity
- Simple dual-slope roof: Standard pricing. Most terrace and semi-D homes.
- Multi-slope or hip roof: +5–10%. More mounting points and angles mean more labour and hardware.
- Flat concrete roof: +5–15%. Requires tilt-mounting frames to angle panels for optimal production.
- Old or damaged roof: May require repair or waterproofing before installation. Cost varies but can add S$2,000–S$8,000 depending on scope.
4. System Size
Larger systems have a lower cost per kWp due to economies of scale. The fixed costs (permits, mobilisation, electrical connection) are spread across more panels.
5. Electrical Configuration
Single-phase homes (most terrace houses) can support up to ~5–7 kWp per phase. Three-phase homes (most semi-D and bungalows) can support larger systems. If your home is single-phase and you want a larger system, a phase upgrade may be needed (S$500–S$2,000 through SP).
6. Battery Storage
Adding a battery increases total system cost by S$8,000–S$20,000 depending on capacity and brand. Batteries are optional and can be added later to any well-designed system.
7. Installer Quality and Service Level
This is the variable that most comparison sites ignore, and it’s arguably the most important one.
A cheap installation (under S$1,000/kWp) almost always means corners have been cut: lower-grade panels, no power optimisers, outsourced labour with no accountability, minimal warranty, and no after-sales monitoring. Over 25 years, those savings evaporate through lower output, faster degradation, and expensive repairs.
A premium installation (S$1,200–S$1,400/kWp) from a reputable company includes Tier-1 equipment, in-house installation teams, comprehensive warranties, proactive monitoring, and a long-term service relationship.
Solar is a 25-year investment. The difference between a S$900/kWp installation and a S$1,300/kWp installation is S$6,000 upfront — but it can mean S$20,000–S$40,000 more in lifetime energy production and avoided repair costs.
The Hidden Costs: What to Watch For
A reputable installer includes everything in their quote. But some operators advertise a low headline price and then add extras. Here’s what to verify:
The rule of thumb: If the quote doesn’t explicitly list permits, monitoring, and scaffolding as included, ask. Get the total cost in writing before you sign.
The True Cost of Solar: Price per kWh Over 25 Years
This is the metric that turns the entire cost conversation on its head, and it’s the one that competitor guides rarely show you.
Instead of asking “how much does the system cost?”, ask: “how much does each kilowatt-hour of solar electricity cost me over the system’s lifetime?”
The Calculation
Take a 10 kWp system at S$18,000. Over 25 years, it will produce approximately 300,000–350,000 kWh of electricity (accounting for a gradual 0.4–0.5% annual degradation in panel output).
Solar electricity costs you 5–8 cents per kWh. Grid electricity costs 28–32 cents per kWh today and will almost certainly increase over the next 25 years.
This means solar is not just cheaper than the grid — it’s 4–6 times cheaper. And unlike grid tariffs, your solar cost is fixed at the moment of purchase. It never goes up.
Financing: How to Pay for Solar in Singapore
Multiple paths exist, each with different trade-offs. Here’s an honest comparison:
Notice something: every single option produces positive monthly cash flow. You are never paying more than you save. The only question is how much of the surplus you keep versus share with a financing provider.
Sunollo’s Guaranteed Savings Model
For subscription customers, Sunollo guarantees that your electricity savings will exceed your monthly payment. If they don’t, Sunollo covers the difference. This eliminates the “what if it doesn’t perform?” concern entirely.
ROI and Payback: When Do You Break Even?
Payback Period by Scenario
After payback, the system generates free electricity for the remaining 19–21 years of its warranted life. This is pure return on investment — no ongoing payments, no subscription fees, just free energy from your roof.
25-Year Return on Investment
For a S$20,000 investment in a 12 kWp system:
- Total energy produced over 25 years: ~390,000 kWh
- Value of that energy at 30 cents/kWh: S$117,000
- Net profit after system cost: S$97,000
- Return on investment: 485%
And if electricity prices rise (which they historically do), the actual return will be higher.
When Cheap Is Too Cheap: Red Flags in Solar Pricing
If you receive a quote below S$1,000/kWp, approach with extreme caution. Here’s what’s typically been cut:
- Unknown or delisted panel brands — Panels from manufacturers without a Bloomberg Tier-1 rating carry higher degradation risk and weaker warranty enforcement.
- No power optimisers — Basic string-only setups are cheaper but sacrifice 5–25% in energy yield over the system’s life (especially on shaded or multi-orientation roofs) and lack panel-level safety features.
- Outsourced installation labour — Ad-hoc contractors with no accountability to the quoting company. Quality control is minimal.
- Short or vague warranties — A 5-year workmanship warranty vs 10+ years. A 10-year panel warranty vs 25–30 years.
- No monitoring system — Without monitoring, you won’t know if a panel fails or the system underperforms until your electricity bill spikes months later.
- Permits not included — EMA and SP approval costs are added after you sign.
A solar system is not a commodity. It’s a 25-year energy infrastructure investment on your home. The cheapest quote is almost never the best value.
Sunollo Pricing: What We Include and Why
Transparency is a core principle at Sunollo. Here’s what every Sunollo installation includes:
- High-efficiency monocrystalline panels from Tier-1 manufacturers with 25–30-year performance warranties
- SolarEdge inverter with up to 25-year warranty
- SolarEdge power optimisers on every panel — 25-year warranty, per-panel monitoring, rapid shutdown and arc-fault protection
- Premium anodised aluminium mounting with stainless steel hardware rated for Singapore’s tropical climate
- Full electrical work by Licensed Electrical Workers, including DB board connection, isolators, and surge protection
- All permits and approvals — EMA registration, SP bi-directional meter, LEW certification
- Lifetime monitoring access via SolarEdge’s platform
- Sunollo Care programme — proactive monitoring, annual performance reviews, priority support
- 10-year comprehensive workmanship warranty
No hidden fees. No surprise add-ons. The price we quote is the price you pay.
Frequently Asked Questions
Q: How much do solar panels cost in Singapore in 2026?
A: Residential solar costs S$1,000–S$1,500 per kWp fully installed. A typical 10 kWp system costs S$12,000–S$15,000. The price includes panels, inverter, mounting, all electrical work, permits, monitoring, and warranties.
Q: Why is there a price range? What determines where I fall?
A: Panel technology (standard vs premium), inverter type (string vs optimised), roof complexity, system size, and installer quality all affect pricing. Larger systems have a lower cost per kWp.
Q: Is cheaper always better?
A: No. Quotes below S$1,000/kWp typically use lower-grade equipment, skip power optimisers, outsource installation labour, and offer shorter warranties. Over 25 years, a slightly more expensive system with premium equipment produces significantly more energy and lasts longer.
Q: What is the payback period for solar in Singapore?
A: Most homeowners break even in 4–6 years. After payback, solar electricity is free for the remaining 19–21+ years of the system’s life.
Q: Can I install solar with zero upfront cost?
A: Yes. Green loans, solar leases, and subscription (rent-to-own) models all allow S$0 upfront. Monthly payments are typically less than your electricity savings, making you cash-positive from month one.
Q: Do solar panels increase property value?
A: Yes. Solar-equipped homes are increasingly valued in Singapore’s landed property market. Buyers recognise the long-term savings and the transferable nature of a well-installed system.
Q: How much can I save per month with solar?
A: Depending on system size and consumption: S$180–S$320/month for a terrace, S$300–S$500 for a semi-D, and S$500–S$900 for a bungalow.
Q: What happens after 25 years?
A: Modern panels continue producing electricity beyond their warranty period, typically at 80–85% of original capacity. Many systems operate effectively for 30–35 years. Inverters may need replacement once (at year 12–15 for string inverters, or year 20–25 for SolarEdge).
Q: Are there any government subsidies for solar in Singapore?
A: Singapore does not offer direct solar subsidies. However, the Net Energy Rebate (NER) provides ongoing compensation for exported electricity, and the streamlined approval process through EMA and SP keeps regulatory costs minimal.
Q: Should I add a battery to my solar system?
A: Batteries (S$8,000–S$20,000) are optional and best suited for homes with high night-time consumption or EV charging needs. Most homeowners start with panels only and add a battery later as prices continue to fall.
Q: How does Sunollo’s pricing compare to other installers?
A: Sunollo sits in the mid-to-premium range (S$1,600–S$1,900/kWp) because we include SolarEdge optimisers, Tier-1 panels, comprehensive warranties, and the Sunollo Care programme as standard. We don’t compete on being the cheapest; we compete on delivering the highest lifetime value.
Q: How often should this pricing data be updated?
A: Solar prices shift with global panel production, shipping costs, and local competition. We update this guide quarterly. The data above reflects Q1 2026 pricing.
Get Your Personalised Quote
Every home is different. Roof orientation, shading, structural condition, electrical configuration, and your consumption pattern all affect the optimal system design and final cost.
Sunollo offers a free, no-obligation site assessment for every landed homeowner in Singapore. Our energy consultants will evaluate your roof, analyse your SP bills, design an optimised system, and present a fully itemised quote — with no hidden fees and no pressure.
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