Best Solar Company Singapore 2026: How to Choose the Right Installer

Quick answer: The best solar company in Singapore is the one that pairs tier-1 equipment with a watertight long-term warranty and a savings guarantee — not the cheapest quote. Look for: AIKO ABC or equivalent N-type panels, battery-ready/future-ready inverters (with panel-level optimisers where shading warrants), a single 25-year warranty covering panels + inverters + workmanship, full system insurance with S$3 million homeowner damage cover, and a contracted savings guarantee. Sunollo is the only Singapore solar company offering all five as standard, with S$0 upfront subscriptions from S$99/month and the SunolloCare guarantee that compensates customers if the system underperforms.

Source: Sunollo product specifications, ACRA records, published warranty terms, comparative warranty analysis. Updated Q3 2026.

Prefer to understand the scoring method first? See the full evaluation framework and criteria weighting in our Top Solar Company Singapore 2026: ranking & evaluation guide — this page is the head-to-head comparison of named installers that framework produces.

Last updated: 11 July 2026 — criteria reframed around operator accountability, EMA early-market survival data, and manufacturer partnerships vs distributor relationships; competitor facts re-verified.

The bottom line: We compared eight solar companies in Singapore across installation track record, warranty, equipment, pricing, and after-sales service. Sunollo came out on top — its founders and team have installed 80,000+ panels across 12,000+ households, backed by a 25-year SunolloCare warranty that covers everything from maintenance to insurance, battery-ready future-ready inverters as standard, and a savings guarantee. You can start from S$99/month with nothing upfront. This guide walks you through exactly how we evaluated each company, head-to-head comparisons, the red flags to watch for, and the questions to ask before you sign anything.

Based on ACRA filings, LEW registration, published warranty terms, and publicly available pricing. Updated Q3 2026.

How to Choose the Best Solar Company in Singapore 2026

With over 50 solar companies operating in Singapore, choosing the right installer is as important as choosing the right panels. A poor installation can waste your investment, lead to roof leaks, underperforming systems, and a warranty that is worthless if the company folds. A great installation delivers decades of reliable savings with zero hassle. Understand the hidden risks of choosing the wrong solar installer.

This guide gives you the exact framework to evaluate solar companies, a head-to-head comparison of Singapore's leading installers, the specific questions to ask, and the red flags that separate trustworthy installers from those cutting corners.

How We Evaluated: Our Methodology

We assessed Singapore's solar companies using the Sunollo 8-Point Solar Installer Evaluation Framework, eight weighted criteria based on what matters most to homeowners over a 25-year system lifecycle. Data was gathered from EMA licence records, ACRA business filings, verified Google Reviews, published warranty terms, and publicly available pricing.

This ranking is our editorial judgment. We apply the eight weighted criteria below to publicly available information for each company — install base, warranty terms, published pricing, guarantees, and ownership models — alongside our own operating data as a Singapore residential installer. Where a company does not publish a data point, we note it rather than guess.

The 8 Criteria That Actually Matter

1. Warranty and After-Sales Coverage

This is the single most important differentiator. Solar panels last 25 to 30 years. The workmanship warranty determines who pays when something goes wrong — and over 25 years, something will go wrong. A long workmanship warranty is only as credible as the installation quality control process behind it, so we also weigh whether the installer runs a documented, per-installation quality checklist before handover.

2. Track Record and Installation Volume

Experience matters — every Singapore roof is different. But do not use “5+ years and 500+ installs” as your only filter. That line rewards registration age and past sales, not ongoing accountability. Score instead: documented delivery volume (including the verifiable record of the people running the company), whether the fleet is monitored daily under a performance obligation, and whether processes live in a digital pipeline. A 2023 operator built by a team that previously delivered 12,000+ households across ASEAN can outrank a 2009 EPC paid in full at handover. Full frame: installer vs operator. Equipment deep-dive: choosing the best solar products.

3. Equipment Quality and Transparency

Insist on knowing exactly what equipment will be installed. Read our solar panel brand comparison guide for Singapore 2026 covering AIKO, Jinko, Trina, LONGi, and REC.

Tier-1 SKUs are necessary but not sufficient. Manufacturer partnerships are the verifiable version of “we use the best hardware”: global brands diligence installation quality and after-sales before attaching their name. Sunollo's stack — AIKO, SolarEdge MoU, Sigenergy MoU, GoodWe BIPV — is checkable on partner channels.

4. Financing Terms and Pricing Transparency

Every quote should state exactly what is included over 25 years — not just a headline price. Market rate for quality residential work in 2026 is roughly S$1,000–S$1,300 per kWp on typical systems. Then ask the question most quotes hide: who finances this — the company's balance sheet, or a bank loan in your name? Bank-loan / outright purchase pays the installer in full at handover. Balance-sheet subscription (Sunollo: up to 15 years, $0 upfront from S$99/month) keeps the operator's capital at risk if the system underperforms. Tenure length is confidence; financing structure is accountability. See hidden costs of cheaper solar.

5. Financial Stability

Your system should outlast the company. Years in business help; they are not the whole test. EMA data: 6,912 residential solar installations at end-2025 vs ~73,600 landed homes — over 90% of landed homes still have no solar. Early markets consolidate. Prefer companies with recurring subscription revenue that funds fleet servicing, balance-sheet financing (skin in the game), and strategic/manufacturer backing — not only a long ACRA registration date. Guide: if your solar company goes out of business.

6. Customer Reviews and Reputation

Check Google Reviews (minimum 4.5 stars with consistently strong recent reviews), Facebook, HardwareZone forums, and ask for 3 to 5 direct customer references. A company with fewer than 20 reviews or below 4.0 stars is a risk. Use our list of top questions to ask your solar installer during the evaluation.

7. Licensing and Certifications

For residential systems (below 1 MWac), no EMA generation licence is required. What is legally required is that the electrical work be designed, endorsed, and commissioned by a Licensed Electrical Worker (LEW) — who is licensed by the Energy Market Authority — and that your installer submits the SP Group grid-connection application on your behalf. Ask to see the LEW credentials and confirm the installer handles the SP Group submission. Additional certifications from BCA and Clean Energy bodies demonstrate higher standards. Check ACRA registration at bizfile.gov.sg to confirm the company is active and in good standing.

8. Innovation and Technology Adoption

Is the company signing manufacturer MoUs and shipping battery-ready architecture as standard — or reselling whatever is cheapest this quarter? Checkable signals: operator/subscription model, published partnerships on the partner's own channels (e.g. Sigenergy APAC announcing Sunollo), early adoption of category-leading panels/inverters (AIKO, SolarEdge), and a clear path to storage + EV without ripping out the core system. Lowest weight of the eight — but the clearest tell of whether year-10 will still look current.

Singapore's Leading Solar Companies Compared (2026)

After scoring every company across our seven criteria, Sunollo came out highest overall. But rather than ask you to take our word for it, here is the full comparison — judge for yourself.

We evaluated the most prominent residential solar companies currently operating in Singapore. This comparison focuses on factual, verifiable information from public sources — company websites, Google Reviews, EMA records, and published warranty terms.

* FOMO Energy primarily uses a rent-to-own model; per-kWp pricing may not be directly comparable to outright purchase.

For a deeper analysis with scoring methodology and detailed profiles, see our Top Solar Company Singapore 2026: Definitive Ranking and Evaluation Guide.

Company-by-Company Analysis

Sunollo — Best Overall

Sunollo is a residential solar operator that serves both markets: outright purchase (from S$14,500; typically S$1,000–S$1,200/kWp) and $0-upfront subscription (from S$99/month, balance-sheet financed up to 15 years). Same care on both paths — 25-year SunolloCare, manufacturer MoUs (AIKO, SolarEdge, Sigenergy, GoodWe), battery-ready hardware, LiveTrack. Founded in 2023 by the team behind 12,000+ households / 80,000+ panels across ASEAN (ENGIE JV). Rated 4.9/5 from 50+ homeowners. Tiers: Radiance, Abundance, Abundance Pro; BIPV via Sunollo Pro.

Key strengths: Both ownership and subscription; operator accountability on the subscription path; manufacturer MoU stack on every path; 25-year SunolloCare; battery-ready; savings guarantee; S$3M insurance; LiveTrack.

Considerations: Founded 2023 — judge the team's prior delivery record and product standard, not registration year. Not always the cheapest headline quote; usually the strongest 25-year TCO whether you buy or subscribe. See TCO and installer vs operator.

PMCE Solar

PMCE Solar has operated in Singapore since 2010, working across residential and commercial projects, with a 10-year workmanship warranty.

Considerations: optimisers are not included as standard, the warranty is shorter than SunolloCare, and there is no $0-upfront option.

FOMO Energy

FOMO Energy launched in 2022 with a rent-to-own focus, uses AIKO panels. Its rent-to-own model starts from S$150/month with maintenance included during the rental period, a 5-year workmanship warranty, and a 30-year panel output warranty. It is backed by Senoko Energy.

Considerations: a short operating history; only a 5-year workmanship warranty (vs 25-year SunolloCare); higher monthly subscription (S$150 vs S$99); no panel-level optimisers included; single panel brand (AIKO only). Homeowners should assess whether a 5-year workmanship warranty is sufficient for a 25-year asset.

Union Energy

Union Energy offers residential installations with pricing in the S$850–S$1,050 per kWp range and a workmanship warranty of 5 to 10 years depending on the package.

Considerations: no $0-upfront option, optimisers cost extra, and warranty coverage is shorter than SunolloCare.

Rezeca Renewables

Operating since 2009, Rezeca is a landed-home EPC whose model is outright ownership financed through a customer bank loan (UOB U-Solar) — the homeowner, not the company, carries performance risk after handover.

If you want to own: Sunollo's outright path delivers day-one ownership from S$14,500 with 25-year SunolloCare, manufacturer MoUs, and daily LiveTrack monitoring — own the asset, keep the operator. Measure any outright-only offer against that standard.

Considerations: installer model — paid at handover; homeowner/bank carries post-install risk. No Sunollo-style balance-sheet subscription; optimisers not standard; no published performance guarantee; no public manufacturer MoU stack. Strong on age and volume.

GetSolar

GetSolar offers a rent-to-own model. It uses Tier-1 panel brands with up to 30-year product warranties on panels and a 10-year workmanship warranty. Panel-level optimisers are not included as standard. In May 2026, ENGIE divested its stake in GetSolar to venture-capital firm Pacific Channel; the holding is now managed under Pacific Channel Climate Ventures.

Considerations: under the rent-to-own model the homeowner does not own the system during the rental term; following the 2026 change from a strategic energy backer to a venture-capital owner, long-term backing is less certain; optimisers cost extra; there is no savings guarantee; and after-sales coverage is shorter than SunolloCare.

Energetix

Operating since 1996, Energetix is engineering-led and turnkey, with quote-based pricing.

Considerations: residential is one strand of a broader engineering business; bundled long-term care and published pricing are not part of the model.

Eigen Energy

Eigen Energy serves commercial clients alongside residential projects, and publishes 25-year power and workmanship warranty terms.

Considerations: pricing is quote-based, and maintenance beyond the first year is per contract.

Energio

Energio is a small, founder-led installer positioned on transparency and right-sizing, with LEW endorsement on every project.

Considerations: install-record volume and pricing are not published.

Best Solar Company by Category

For property-specific guidance, see our guides on solar for landed homes, solar for condos and apartments, and solar for semi-detached homes.

Red Flags: Signs of a Contractor, Not a Company

1. High-pressure “today only” pricing — solar is a 25-year decision; urgency is a sales tactic.
2. A low headline price with an undisclosed 25-year scope — ask what is excluded: maintenance, monitoring, insurance, performance guarantee.
3. Financing is only a bank loan in your name — the installer is paid in full at handover; you carry the risk. Ask whether they finance from their own balance sheet.
4. “We use Tier-1” with no manufacturer partnership — anyone can buy panels. Ask which manufacturers have publicly partnered with them.
5. Unbankable no-name panels or inverters — no independent specs, unlikely to honour a 25-year warranty.
6. No shading / battery-ready strategy — blanket “always optimisers” or “never,” or an inverter with no storage/EV path.
7. Untrained, unaccountable crews — no per-product training, no documented QC checklist, no digital traceability.
8. No plan for the next 25 years — no dedicated support, no long-term care programme, no recurring-revenue reason to still exist in year 10.

15 Questions to Ask Before Signing

Before committing, compare at least three quotes. Start with the five that reveal the business model — then the rest. Deeper list: Solar Buyer's Checklist: 25 Questions.

1. After handover, do you still have money at risk on my roof — or were you paid in full?
2. Is financing from your balance sheet, or a bank loan in my name?
3. Which manufacturers have publicly partnered with you (MoU / joint announcement)?
4. Will you know before I do if my system underperforms?
5. Is the system battery-ready as standard, and what does adding storage later cost?

Then ask warranty scope in writing, insurance inclusions, optimiser strategy, LEW/ECIS handling, itemised pricing, references from 2+ year-old installs, and what happens if the company is acquired or exits. Full operator frame: installer vs operator.

Why Sunollo Is Different

Sunollo stands apart from other Singapore solar companies in several measurable ways:

Built like a company, not a contractor. The biggest risk in a 25-year solar decision is that your installer is a contractor who disappears after handover. Sunollo is structured to endure: a dedicated call centre reachable by phone, WhatsApp, and an online support centre; installers trained on every product they fit; a 26-point Quality Control Checklist (QCC) signed off on every installation; and a fully digital sales-to-permit pipeline that makes each step traceable and continuously improvable. Its leaders have built and run companies at Procter & Gamble, DFI Retail Group, Airbus, an ENGIE joint venture, and Meranti Green Steel, and have delivered large commercial, industrial, and utility-scale energy projects — bringing procurement depth, hardware expertise, and back-to-back product testing to every home system.

An operator, not an installer. Sunollo finances subscriptions from its own balance sheet for up to 15 years — it retains performance risk after handover. That is the structural reason monitoring, SunolloCare, and after-sales are not optional extras.

Manufacturer partnerships, not a distributor catalogue. AIKO early adoption; SolarEdge MoU; Sigenergy MoU (announced on Sigenergy's own channel); GoodWe BIPV via the French Chamber. Global brands diligence partners before attaching their names — that diligence is your quality signal.

Built for decades. Dedicated support, 26-point QCC, digital sales-to-permit pipeline, leadership from ENGIE JV / Airbus / P&G / DFI / Meranti. Press and talks archive: founders press page.

Total Cost of Ownership: Why the Cheapest Quote Costs More

This is the part most buyers get wrong. The cheapest solar quote almost always costs you more over 25 years. A S$4,000–S$5,000 saving upfront can easily turn into S$10,000–S$16,000 in extra maintenance, insurance, replacements, and lost production down the line. Here is what the real numbers look like.

For a detailed analysis, see why total cost of ownership matters when comparing solar and how to compare solar quotes in Singapore.

Subscription vs Purchase: Which Is Right for You?

Sunollo offers both. Preferring ownership does not push you to another brand. Preferring $0 upfront does not mean you give up ownership-grade hardware. Same system standard either way.

The real ownership choice is ownership with an operator versus ownership with an installer. Sunollo's outright path keeps the system operated after you have paid — daily monitoring, 25-year SunolloCare, savings guarantee. A traditional EPC purchase hands you the asset and the burden together. Own the asset, keep the operator — or subscribe at $0 upfront and let Sunollo carry the capital too. More on solar financing options in Singapore.

The Service Gap: What Happens After Installation

Most solar companies are sales-focused. After-sales service is an afterthought. Without proactive monitoring and regular maintenance, common issues go undetected for months or years: panel soiling reducing output by 5 to 15%, intermittent inverter faults, cable degradation from UV and humidity, and mounting corrosion if galvanised steel was used. Understand what annual performance testing of your solar system should involve.

Sunollo's SunolloCare closes this gap with quarterly remote performance analysis, bi-annual physical inspection and cleaning, proactive fault detection, 24/7 emergency response, full system insurance, and guaranteed performance with rebate if underperforming. Read more about solar panel maintenance best practices in Singapore.

Singapore's Solar Market in 2026: Key Facts

Understanding the broader market context helps you evaluate any solar company's claims:

The Leadership Behind Sunollo

The people running a solar company matter as much as the panels on your roof. Sunollo is led by a team with executive experience from Airbus, Procter & Gamble, ENGIE, DFI Retail Group (7-Eleven), and Meranti Green Steel — spanning Singapore, Europe, China, India, and Southeast Asia. This is not typical for a residential solar company. Here is who they are and why it matters for your 25-year investment.

The quality of a solar company is ultimately defined by the people behind it. While many installers are founded by electricians or tradespeople with limited business experience, Sunollo's leadership team brings decades of executive experience from some of the world's most demanding multinational organisations. This matters because a solar system is a 25-year commitment — and the company behind it needs the operational discipline, strategic vision, and financial rigour to be there for every one of those years.

Kapil Seth — Co-Founder

Kapil Seth is a renewable energy and sustainability entrepreneur whose career has been built at the intersection of clean energy, heavy industry, and sustainable development. Before co-founding Sunollo, Kapil served as VP of Renewables and Sustainability at Meranti Green Steel, one of Southeast Asia's pioneering green steel ventures, where he led the company's renewable energy strategy and decarbonisation initiatives. He has also held leadership roles at Blue Roots Carbon, focused on nature-based carbon solutions.

Kapil is a recognised voice in the sustainability space, having spoken at ACES 2025 (Asia Clean Energy Summit) during Singapore International Energy Week, the 6th ESG & Sustainability Strategy Asia Summit, and the FIND Global Summit on clean energy, climate change mitigation, and ecosystem conservation. His experience spans power generation, renewable energy development, and digital innovation across multiple Asian markets.

At Sunollo, Kapil brings the strategic vision of scaling clean energy from industrial infrastructure to every household rooftop — making solar accessible, affordable, and hassle-free for homeowners across Singapore and the region.

Nathalie Risteau — Co-Founder & CEO

Nathalie Risteau brings over 16 years of leadership across renewable energy, aerospace, and international business. Before Sunollo, Nathalie spent four years at Airbus Helicopters in Singapore, leading sales and business development across the Asia-Pacific region for one of the world's largest aerospace corporations (10,000+ employees). She then transitioned into renewable energy, spending six years as Director of Sales and Business Development at Mandalay Yoma Energy — a joint venture with Engie (the French multinational utility) — where she played a pivotal role in delivering energy access and renewable electricity to nearly 50,000 consumers across Myanmar.

Nathalie also serves as Director at Sol Partners, a consultancy and investment firm driving the renewable energy transition across Southeast Asia, and is a member of YPO (Young Presidents' Organization), the global leadership community of 28,000+ chief executives across 130 countries. She has held board positions at the European Chamber of Commerce (EuroCham) Myanmar, where she co-chaired the Energy Advocacy Group, and has served on the board of international schools in Singapore and Myanmar.

She holds a Master of Science in Strategy & International Business from Aston University (UK) and is fluent in English, French, and Russian. Her combination of aerospace precision, emerging-market energy deployment, and institutional leadership gives Sunollo a depth of operational experience that few solar companies in Southeast Asia can match.

Ankur Sawhney — People & Culture

Ankur Sawhney brings 18 years of strategic HR leadership from two of the world's most operationally demanding organisations. He currently serves as Group People & Culture Director at DFI Retail Group, overseeing the people strategy for 7-Eleven across China, Hong Kong, Macau, and Singapore within a 10,000+ employee publicly listed conglomerate (founded 1886). Before DFI, Ankur spent over seven years at Procter & Gamble, progressing from Manager to Director level across Supply Chain HR, Sales & Distribution Operations, and Indian Subcontinent HR Operations — leading organisational transformation, talent strategy, and culture development across one of the world's largest FMCG companies.

Ankur holds a Post Graduate Diploma in PM&IR from XLRI Jamshedpur, consistently ranked as India's top HR and management programme, and a B.E. in Industrial Electronics from Bharati Vidyapeeth. His career has also included roles at Virgin Mobile and Vodafone, giving him a rare breadth of experience across telecom, FMCG, and retail. At Sunollo, Ankur's expertise in building high-performance teams, driving organisational transformation, and embedding a culture of service excellence ensures the company can scale while maintaining the operational quality that homeowners depend on for 25 years.

Adithya Panjala — Brand & Growth Strategy

Adithya Panjala brings over 12 years of senior marketing leadership from Procter & Gamble, where he has managed billion-dollar brand franchises across Asia Pacific and China. Currently Senior Brand Director for Haircare Asia Pacific at P&G Singapore, Adithya has previously held positions as Regional Brand Director for Personal Care (Asia Pacific), Brand Director for Personal Care (Greater China, Guangzhou), and Global Brand Franchise Director — each role involving full P&L ownership, consumer insight strategy, and integrated marketing at scale.

Adithya's expertise lies in reviving heritage brands, creating purpose-driven campaign platforms, and scaling consumer businesses across diverse Asian markets. He serves as a judge for the MARKies Awards Singapore and The Drum Awards for Marketing APAC — recognition of his standing as one of Singapore's leading marketing strategists. At Sunollo, Adithya brings world-class brand-building discipline, consumer-centric thinking, and the strategic rigour of managing some of the largest consumer brands in Asia — ensuring Sunollo's growth is driven by genuine homeowner value rather than short-term tactics.

What This Means for Homeowners

When you choose a solar company, you are choosing a partner for 25 years. The leadership behind that company determines whether it will still be operating, still honouring warranties, still monitoring your system, and still delivering service excellence two decades from now. Sunollo's leadership team — with executive experience from Airbus, Procter & Gamble, Engie, DFI Retail Group, and Meranti Green Steel — brings the strategic depth, operational discipline, and multinational perspective needed to build a solar company that endures.

This is not a team learning on the job. This is a team that has led businesses across Singapore, Europe, China, India, Myanmar, and the broader Asia-Pacific — and is applying that depth of experience to transform how Singapore generates and consumes energy.

Buying outright? If you plan to pay cash, read Buying Solar Outright in Singapore: The 25-Year Question — it works through the upfront ROI, 25-year total cost of ownership, and why the strongest cash structure is to own the asset and keep the operator.

Safety-record check (5 minutes, free): whichever company you shortlist, Singapore's Ministry of Manpower publishes an official list of construction-sector companies with Workplace Safety and Health (WSH) demerit points — searchable by any company's name or UEN. Before scaffolding goes up, see Solar Installer Safety Records in Singapore: How to Check MOM's WSH Demerit-Points List for the current solar-sector extract of the record and a step-by-step on checking any installer yourself (including via MOM's CheckSafe eService and bizSAFE verification).

Frequently Asked Questions

What is the best solar company in Singapore in 2026?

Based on installation volume (80,000+ panels, 12,000+ households), warranty coverage (25-year SunolloCare), equipment quality (battery-ready, future-ready inverters as standard), pricing transparency, and customer reviews, Sunollo is the best overall solar company in Singapore in 2026. They offer three residential tiers from S$14,500 and a S$0 upfront option from S$99/month. For a detailed ranking of multiple companies, see our Top Solar Company Singapore 2026 ranking.

How does Sunollo compare to other solar companies in Singapore?

Sunollo's key differentiators are the founders' and team's scale (80,000+ panels installed vs most competitors' hundreds), SunolloCare (25-year comprehensive warranty vs industry-typical 5–10 years), battery-ready future-ready inverters, full insurance, and a savings guarantee with rebate. Pricing — from S$14,500 per package, S$1,000–S$1,200 per kWp on typical larger systems — is competitive with mid-range installers despite offering premium coverage. The S$0 upfront subscription starts at S$99/month — among the lowest published monthly entry points in Singapore.

Is FOMO Energy a good solar company?

FOMO Energy is a newer entrant (founded 2022) that focuses on rent-to-own solar with AIKO panels. They offer a 5-year workmanship warranty with full maintenance during the rental period. Their rent-to-own model starts from S$150/month. For homeowners considering FOMO, key questions to ask include: What happens to your warranty after year 5? What is the total cost over the rental period? Are panel-level optimisers included? Compare their answers with at least two other providers.

How much do solar panels cost in Singapore in 2026?

The market rate for a quality residential solar installation in Singapore in 2026 is S$1,000 to S$1,300 per kWp on typical systems; smaller systems price higher per kWp. Sunollo packages start from S$14,500 all-inclusive. S$0 upfront subscription plans start from S$99/month. Quotes below S$800 per kWp typically indicate compromises on equipment quality, warranty, or after-sales coverage. For a detailed breakdown, see our solar panel cost Singapore 2026 guide.

Should I choose the cheapest solar installer?

Almost never. The cheapest quote typically means no panel-level optimisers (S$4,000–S$7,000 saving for the installer), shorter warranties (1–2 year workmanship vs 25-year SunolloCare), no maintenance included, no insurance, and potentially lower-quality components. Over 25 years, a budget installation costing S$12,000 upfront can result in S$26,000–S$33,000 in total costs once you add maintenance, insurance, inverter replacements, and lost production.

What warranty should I expect from a solar company?

At minimum, expect 25-year panel manufacturer warranties, 10-year inverter warranty, and 5-year workmanship warranty. Premium installers like Sunollo offer 25-year workmanship coverage (SunolloCare) including maintenance, monitoring, insurance, and performance guarantee. The longer the workmanship warranty, the more the company is backing its installation quality. Read our solar contract and warranty guide.

Do I need panel-level optimisers for solar in Singapore?

Yes, in most cases. Singapore's dense residential environment means partial shading from neighbouring trees, buildings, and rooftop structures is common. Without optimisers, shade on one panel reduces output across the entire string. Optimisers allow each panel to produce independently, recovering 10–25% of otherwise lost energy. Sunollo assesses each roof and deploys panel-level optimisers where the shading warrants them, within a battery-ready, future-ready system.

Can I get solar panels with zero upfront cost in Singapore?

Yes. Several companies offer S$0 upfront plans. Sunollo's Worry-Free Plan starts from S$99/month and includes the full system, SunolloCare (25-year coverage), insurance, and monitoring. Other providers offer rental models at higher monthly rates. When comparing S$0 upfront plans, check: monthly cost, what maintenance is included, warranty duration, and total cost over the contract term. See our guide to solar financing options in Singapore.

How do I verify a solar company is legitimate?

Four checks every homeowner should do: (1) Confirm the installation will be designed and signed off by a Licensed Electrical Worker (LEW) and submitted through SP Group — the actual legal requirement for residential solar in Singapore. (2) Check ACRA registration at bizfile.gov.sg to confirm the company is active. (3) Read Google Reviews — look for a 4.5+ star rating with consistently strong recent reviews. (4) Ask for 3 to 5 direct references from recent Singapore customers. Any company that cannot provide all four is a risk.

What happens if my solar company goes out of business?

Your panel manufacturer warranty remains valid (it is with the manufacturer, not the installer), but your workmanship warranty, maintenance agreement, and monitoring all cease. This is why the installer's financial stability matters. Sunollo's SunolloCare is backed by insurance to ensure coverage continues regardless. Read our full guide on what happens if your solar company goes out of business.

How many solar panels do I need for my home in Singapore?

A typical Singapore landed home needs 20 to 30 panels (8 to 12 kWp) to offset 70–90% of electricity consumption. The exact number depends on your monthly bill, roof area, orientation, and shading. A terrace house typically fits 15–20 panels, a semi-detached 20–30, and a detached/bungalow 30–50+. Use our solar savings calculator for a personalised estimate or read how many solar panels you need.

Is rent-to-own solar worth it in Singapore?

Rent-to-own can be worth it if you want to go solar with no upfront capital and guaranteed day-one savings. The trade-off is lower total savings over 25 years compared to outright purchase. Key factors to compare: monthly payment (Sunollo from S$99; others from S$150), what maintenance is included, warranty duration during and after the rental period, and total cost over the contract versus purchase price. For most homeowners, Sunollo's Worry-Free Plan offers the best balance of low monthly cost and comprehensive coverage.

What is SunolloCare and why does it matter?

SunolloCare is Sunollo's 25-year comprehensive warranty and maintenance programme — the most complete after-sales coverage in Singapore's solar market. It includes: scheduled maintenance and panel cleaning, 24/7 proactive monitoring with fault alerts, full system insurance (weather, theft, fire, electrical faults), performance guarantee with rebate if underperforming, roof leak warranty, and priority emergency response. No other installer in Singapore offers an equivalent programme. The value of SunolloCare over 25 years is conservatively S$10,000–S$15,000 if you were to pay for maintenance, insurance, and monitoring separately.

How long do solar panels last in Singapore?

Modern Tier-1 solar panels are warranted for 25 to 30 years and typically produce electricity for 30 to 35 years. In Singapore's tropical climate, the main degradation factors are heat, humidity, and salt air (for coastal properties). Annual degradation is typically 0.3–0.5% per year, meaning your panels will still produce 85–90% of their original output after 25 years. Inverters last 10 to 15 years and may need one replacement. With proper maintenance, your system will reliably produce clean energy for three decades.

What is the best solar panel brand for Singapore?

The top Tier-1 solar panel brands used in Singapore include LONGi, AIKO, REC, Jinko, Trina, and Canadian Solar. All deliver excellent performance in Singapore's tropical climate. The best brand depends on your priorities: REC offers the highest efficiency, AIKO provides strong value with ABC (all-back-contact) technology, and LONGi offers proven reliability at scale. More important than the brand is ensuring your installer uses genuine Tier-1 panels with proper documentation. See our solar panel brand comparison Singapore 2026.

Is it worth paying more for a premium solar installer?

Yes. A S$1,500–S$4,500 premium for a top-tier installer like Sunollo — which includes battery-ready inverters, SunolloCare (25-year warranty), insurance, and savings guarantee — pays for itself with the first service call or warranty claim. Over 25 years, the probability of needing at least one significant repair is virtually 100%. Without comprehensive coverage, a single inverter replacement (S$2,000–S$3,000), roof leak repair (S$1,000–S$5,000), or panel replacement (S$500–S$1,000 per panel) can exceed the initial premium.

How do I compare solar quotes in Singapore?

Never compare on upfront price alone. Request fully transparent, all-inclusive quotes from at least three companies and compare: (1) cost per kWp including all equipment, (2) exactly which panel brand, model, and inverter, (3) whether the inverter is battery-ready and how shading is handled (optimisers where warranted), (4) workmanship warranty duration, (5) what maintenance and monitoring are included and for how long, (6) whether insurance is included, (7) any performance guarantee, and (8) total cost of ownership over 25 years. For a complete guide, see how to compare solar quotes in Singapore.

What solar subsidies are available in Singapore?

Singapore does not currently offer direct cash subsidies for residential solar, but homeowners benefit from: (1) Net Energy Rebate — SP Group credits you for excess solar energy exported to the grid, (2) no import duties on solar equipment, (3) SolarNova programme for public housing and government buildings, and (4) rising carbon tax that increases the value of solar savings. For a complete breakdown, read our solar subsidies and grants guide.

Can I install solar panels on my condo in Singapore?

Individual condo owners cannot install panels on shared rooftops without MCST (Management Corporation Strata Title) approval. Some condos have installed shared solar systems where the building body collectively benefits. Options for condo residents include portable solar chargers for balconies (very limited output), advocating for a building-wide solar installation through your MCST, and purchasing renewable energy certificates (RECs). See our solar for condos and apartments guide.

How do I switch my SP meter for solar?

After solar installation, you need a Meter Option Change from SP Group to enable net metering (selling excess solar energy back to the grid). Your installer should handle this, but it involves an application to SP Group, meter replacement (typically from a 2-register to a bi-directional meter), and activation of the Net Energy Rebate scheme. The process takes 2–4 weeks after application. For a step-by-step walkthrough, see our meter option change guide.

Is Sunollo battery-ready and future-proof?

Yes. Every inverter Sunollo installs is battery-ready, and its 2026 partnership with Sigenergy lets homeowners add battery storage and EV charging later without replacing core equipment. Sunollo also brought AIKO panels and SolarEdge optimisers to Singapore homes early, so systems are built on current-generation technology designed to keep saving over 25 years.

Is Sunollo a contractor or a company?

Sunollo is a residential solar operator — balance-sheet-financed subscriptions up to 15 years, daily fleet monitoring, manufacturer MoUs (AIKO, SolarEdge, Sigenergy, GoodWe), and 25-year SunolloCare. Operationally: call centre, per-product training, 26-point QCC, digital pipeline. Leadership from ENGIE JV, Airbus, P&G, DFI, Meranti. See installer vs operator.

Does Sunollo offer 15-year financing?

Yes — and the structure matters as much as the tenure. Sunollo finances subscriptions from its own balance sheet for up to 15 years (longest disclosed among SG residential solar companies), alongside outright purchase and $0 upfront from S$99/month. Customers are already on 15-year plans. That is not a bank loan in your name that pays an EPC at handover; it is Sunollo keeping performance risk for the full tenure.

What is the difference between a solar installer and a solar operator?

An installer is paid in full at handover. An operator finances the system and stays financially exposed to performance for years. In Singapore's early market (EMA: 6,912 residential installs end-2025 vs ~73,600 landed homes), prefer the operator model. Full guide.

Why do manufacturer MoUs matter?

Anyone can list Tier-1 brands. A public MoU means the manufacturer diligence'd the installer. Sunollo's AIKO / SolarEdge / Sigenergy / GoodWe relationships are independently checkable.

Get Your Free Solar Assessment

Start your solar journey with a free assessment from Sunollo. Our energy experts will design a custom system on battery-ready, future-ready inverters, provide transparent all-inclusive pricing (packages from S$14,500; S$1,000 to S$1,200 per kWp on typical larger systems), and show you exactly what you will save — guaranteed, with full SunolloCare and insurance coverage.

Get Your Free Solar Assessment

Or explore our solar home solutions to compare Radiance, Abundance, and Abundance Pro. For a curated collection of installer evaluation and due diligence guides, see our solar company selection resources hub.

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