Estimated reading time: 22 minutes | Last updated: July 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 Some are outdated.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 Q3 2026, sourced from installer quotes, industry data, and Sunollo’s own project portfolio.
Get a quote for your home
See what solar costs — and saves — on your roof
Book a free, no-obligation site assessment. Sunollo installs and operates residential solar across Singapore — buy outright or from $0 upfront ($99/month), with the same 25-year SunolloCare either way.
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.
| Year | Average Cost per kWp (Installed, Singapore) | Change vs Previous |
|---|---|---|
| 2016 | S$4,200–S$5,500 | — |
| 2018 | S$3,400–S$4,200 | −19% |
| 2020 | S$2,500–S$3,200 | −24% |
| 2022 | S$2,000–S$2,600 | −19% |
| 2024 | S$1,600–S$2,200 | −15% |
| 2026 | S$1,000–S$1,300 | −39% |
In a decade, the cost of residential solar in Singapore has dropped by approximately 75%. A system that cost S$45,000 in 2016 now costs under S$12,000 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, a battery-ready 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
| Specification | Typical Range |
|---|---|
| Available roof area | 30–55 m² |
| Recommended system size | 6–9 kWp |
| Number of panels | 12–20 |
| Total installed cost | S$6,500–S$11,500 |
| Annual energy production | 7,200–12,600 kWh |
| Monthly bill reduction | S$180–S$320 |
| Payback period | 3–5 years |
| 25-year total savings | S$45,000–S$80,000 |
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
| Specification | Typical Range |
|---|---|
| Available roof area | 50–95 m² |
| Recommended system size | 10–16 kWp |
| Number of panels | 20–35 |
| Total installed cost | S$10,500–S$19,500 |
| Annual energy production | 12,000–22,400 kWh |
| Monthly bill reduction | S$300–S$500 |
| Payback period | 3–5 years |
| 25-year total savings | S$75,000–S$130,000 |
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)
| Specification | Typical Range |
|---|---|
| Available roof area | 90–200+ m² |
| Recommended system size | 18–35 kWp |
| Number of panels | 35–75 |
| Total installed cost | S$18,000–S$42,000 |
| Annual energy production | 21,600–49,000 kWh |
| Monthly bill reduction | S$500–S$900 |
| Payback period | 3–5 years |
| 25-year total savings | S$120,000–S$250,000 |
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: The Full 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.
| Component | What It Is | Approximate % of Total Cost |
|---|---|---|
| Solar panels | The PV modules that convert sunlight to electricity | 35–45% |
| Inverter | Converts DC from panels to AC for home use | 12–18% |
| Panel-level optimisers (where shading warrants) | Per-panel electronics for shaded roofs — output recovery and monitoring | 0–12% |
| Mounting structure | Rails, clamps, and brackets that secure panels to your roof | 8–10% |
| Electrical work | Wiring, conduit, DB board connection, isolators, surge protection | 8–10% |
| Monitoring system | Software platform for real-time production and consumption tracking | 2–3% |
| Permits and approvals | EMA registration, SP bi-directional meter application, LEW certification | 3–5% |
| Installation labour | Qualified technicians and Licensed Electrical Workers | 10–15% |
| Warranty coverage | Panel performance guarantee, inverter warranty, workmanship warranty | Included |
A Worked Example: 10 kWp System for a Semi-Detached Home
| Item | Specification | Cost |
|---|---|---|
| 22 x solar panels | 455W monocrystalline, Tier-1 brand | S$4,500 |
| 22 x panel-level optimisers | SolarEdge P505 — deployed for this roof’s partial shading | S$1,300 |
| 1 x inverter | SolarEdge SE10K, battery-ready, single-phase | S$1,800 |
| Mounting structure | Anodised aluminium rails, stainless steel fixings | S$1,000 |
| Electrical work | DC/AC wiring, isolators, surge protection, DB connection | S$1,300 |
| Monitoring | SolarEdge monitoring platform (lifetime access) | S$300 |
| Permits and approvals | SP Group application, LEW certification | S$500 |
| Installation labour | 2-day installation by trained, QCC-certified installers | S$800 |
| Total | | S$11,500 |
| Cost per kWp | | S$1,150/kWp |
This is a battery-ready specification for a roof with partial shading. On an unshaded roof, no optimisers are needed and the same system lands closer to S$1,000–S$1,100/kWp; IBC panels or extended inverter warranties push towards S$1,300–S$1,500/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
| Panel Type | Efficiency | Cost Impact | Best For |
|---|---|---|---|
| Standard monocrystalline (PERC) | 20–21% | Baseline | Best value for most homes |
| All-black monocrystalline | 20–21% | +5–10% | Aesthetic-conscious homeowners |
| N-type TOPCon | 21–22.5% | +8–15% | Higher yield from same roof area |
| IBC (Interdigitated Back Contact) | 22–24% | +20–30% | Limited roof space, maximum output |
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
| Inverter Type | How It Works | Cost | Pros | Cons |
|---|---|---|---|---|
| String inverter | One inverter for all panels in a string | Lowest | Simple, proven, affordable | Whole-string affected by shading; no panel-level monitoring |
| String + power optimisers | Per-panel optimisers with central inverter | Mid-premium | Panel-level optimisation and monitoring; safety shutdown | Slightly higher upfront cost |
| Microinverters | Individual inverter on each panel | Highest | Full independence per panel; easy expansion | Most expensive; more points of failure |
Sunollo installs battery-ready, future-ready inverters as standard (SolarEdge, Sungrow, and, from 2026, Sigenergy), with panel-level optimisers deployed where a roof's shading warrants them. This delivers the best balance of performance, monitoring, safety features (rapid shutdown, arc-fault detection), and future scalability — you can add battery storage and EV charging later without replacing core equipment.
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.
| System Size | Typical Cost per kWp |
|---|---|
| 5–7 kWp | S$1,200–S$1,300 |
| 8–12 kWp | S$1,100–S$1,250 |
| 13–20 kWp | S$1,050–S$1,200 |
| 21–35 kWp | S$1,000–S$1,150 |
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 battery-ready inverter or shading strategy, untrained labour with no documented quality process, minimal warranty, and no after-sales monitoring. Over 25 years, those savings evaporate through lower output, faster degradation, and expensive repairs.. Learn more about the hidden costs of choosing cheaper solar options
A premium installation (S$1,200–S$1,400/kWp) from a reputable company includes Tier-1 equipment, installers trained per product to a documented 26-point Quality Control Checklist, comprehensive warranties, proactive monitoring, and a long-term service relationship.
Why a company outlasts a contractor. A price only protects you if the business behind it is still there in year 10. Sunollo is built as a company, not a contractor: an end-to-end digital process from sales to installation to permits (full traceability), installers trained on every product they fit under a documented 26-point Quality Control Checklist, a dedicated support centre reachable by phone and WhatsApp, up to 15 years of financing, 25-year SunolloCare, and S$3 million homeowner damage insurance — led by a team that has built and run global operations at P&G, DFI, an ENGIE JV, Airbus, and Meranti Green Energy. That is what makes a 25-year price actually deliver.
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:
| Item | Should Be Included? | Typical “Extra” Charge If Not |
|---|---|---|
| EMA and SP permit applications | Yes | S$300–S$800 |
| Bi-directional meter installation | Yes (handled by SP) | Usually free from SP; some installers charge a “coordination fee” |
| Roof waterproofing / repair | Only if roof is damaged | S$2,000–S$8,000 |
| Monitoring platform access | Yes (lifetime) | Some charge annual subscriptions of S$50–S$150 |
| Annual maintenance | Usually included for Year 1; varies after | S$150–S$400/year |
| Scaffolding / safety setup | Yes | S$500–S$1,500 |
| Panel cleaning | Not typically included | S$150–S$300 per session (but Singapore rain handles most of it) |
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$11,500. 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 | SP Grid |
|---|---|---|
| Total cost | S$11,500 (one-time) | S$90,000–S$105,000 (over 25 years at 30 cents/kWh) |
| Total energy | ~325,000 kWh | ~325,000 kWh |
| Cost per kWh | 3.5 cents/kWh | 28–32 cents/kWh |
Solar electricity costs you 3.5–6 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 5–8 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. Sunollo offers outright purchase, a S$0-upfront subscription from S$99/month, and financing tenures of up to 15 years — the longest we are aware of among Singapore residential installers, with customers already on 15-year plans. Here’s an honest comparison:
| Option | Upfront Cost | Monthly Payment | Monthly Savings | Net Monthly Cash Flow | You Own System? | Total 25-Year Savings |
|---|---|---|---|---|---|---|
| Cash purchase | S$11,500 | S$0 | S$400 | +S$400 (after payback) | Yes, immediately | S$86,000+ |
| Green loan (5yr, 4%) | S$0 | S$212 | S$400 | +S$188 from day 1 | Yes, after 5 years | S$84,000+ |
| Solar lease / PPA | S$0 | S$180–S$250 | S$400 | +S$150–S$220 | No (company owns) | S$45,000–S$55,000 |
| Subscribe (rent-to-own) | S$0 | S$200–S$300 | S$400 | +S$100–S$200 | Yes, at end of term | S$55,000–S$70,000 |
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
Worked examples assuming high self-consumption at current tariffs — most homeowners land between 3 and 5 years:
| Property | System Size | System Cost | Annual Savings | Payback |
|---|---|---|---|---|
| Terrace | 8 kWp | S$9,600 | S$3,200 | 3.0 years |
| Semi-D | 12 kWp | S$13,800 | S$5,000 | 2.8 years |
| Bungalow | 22 kWp | S$24,200 | S$8,500 | 2.8 years |
| GCB | 30 kWp | S$31,500 | S$12,000 | 2.6 years |
After payback, the system generates free electricity for the remaining 20–22 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$13,800 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$103,000
- Return on investment: 745%
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.
- A fixed inverter with no future-ready path — a basic string inverter with no battery-ready or EV-ready upgrade path means you pay again later to add storage, and there is no panel-level optimisation available for the shaded or multi-orientation roofs that actually need it.
- Untrained, unaccountable install crews — labour with no product-specific training and no documented quality process. A real company trains every installer on the products they fit and works to a 26-point Quality Control Checklist with digital traceability.
- 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 — SP Group application and LEW sign-off 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
- Battery-ready, future-ready inverter with up to 25-year warranty — add battery storage and EV charging later without replacing core equipment
- Panel-level optimisers where roof shading warrants — per-panel monitoring, rapid shutdown and arc-fault protection
- S$3 million homeowner damage insurance — included on every installation
- 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$1,300 per kWp fully installed. A typical 10 kWp system costs S$10,500–S$13,000. 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 far below S$1,000/kWp typically use lower-grade equipment, skip the shading assessment and battery-ready upgrade path, rely on untrained crews, 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 3–5 years. After payback, solar electricity is free for the remaining 20+ 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 publishes package pricing from S$14,500, which works out to S$1,000–S$1,200 per kWp on typical larger systems, all-inclusive — battery-ready future-ready inverters, Tier-1 panels, full permits, monitoring, insurance, and the 25-year SunolloCare programme as standard. Measured on what is included, this delivers premium-tier value at a mid-market price: when you add the market cost of optimisers, maintenance, monitoring, and insurance to a typical budget quote, the 25-year total usually exceeds Sunollo’s all-inclusive price. We compete on lifetime value per dollar, not on being the cheapest sticker price.
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 Q3 2026 pricing.
Q: Is it worth paying for a battery-ready, future-proof system?
A: Yes, if you plan to own your home for the long term. Every Sunollo inverter is battery-ready, and its 2026 Sigenergy partnership means you can add battery storage and EV charging later without replacing your core equipment. Retrofitting a system that was not designed to scale is far more expensive than starting with one that was — so a future-ready system protects your savings as electricity tariffs rise.
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 transparent, all-inclusive quote — with no hidden fees, nothing billed to you later, and no pressure.
To see how these cost ranges translate into specific packages and subscription terms, you can view plans and pricing before requesting a quote.
For a curated overview of Singapore solar cost guides, savings calculators, and ROI tools, see the solar cost resources hub.
Related Articles
The Complete Solar Guide for Singapore 2026
How to Save Energy & Cut Electricity Bills in Singapore 2026
Solar Panel Cost Calculator Singapore
Solar Financing Options in Singapore
