Singapore's Solar Energy Specialist

Cut Your Electricity Bill
by Up to 50%

Harvest ambient heat to slash your AC electricity bill by 20–50% — no solar panels, no battery, works on any roof type.

Renewable Energy →
20–50%

Electricity savings on your AC bill

Hybrid Thermal AC — no solar panels needed

❄️

Same comfort

No compromise on cooling performance

🌡️

Thermal technology

Ambient heat powers the refrigeration cycle

NEA
5-Tick Rated
R32
Refrigerant
Free
Site Assessment
Free no-obligation quotation
Works with your existing AC
Singapore-based team & support
Mon–Fri 9am–6pm · +65 8928 8182
Our Solutions

Products for every need

From single-room residential upgrades to large-scale commercial retrofits — we have a solar energy solution that fits.

WSE Hybrid Thermal Air Conditioner — rooftop installation with thermal panel
↓ 20–50% electricity

Hybrid Thermal Air Conditioner

Harvest ambient heat to reduce AC electricity use — works on any roof, no direct sun needed.

Learn more →
WSE Solar PV System rooftop installation
Generate your own power

Solar PV System

Generate, store, and use your own clean electricity — fully or partially independent from the grid.

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ECO3 retrofitted on commercial multi-split VRV outdoor condensing units
↓ ~10% per system

ECO3 — Multi-Split Commercial AC

Retrofit your existing multi-split VRV/VRF commercial AC. Low capex, immediate savings on every bill.

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WSE Hybrid Solar AC-DC Air Conditioner installed at Singapore home
↓ Up to 50% electricity

Hybrid Solar AC-DC Air Conditioner

Solar DC powers your AC directly — no battery required. Auto switches to grid when sun is weak.

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WSE Off-Grid Solar Air Conditioner rooftop installation
100% grid-free option

Off-Grid Solar Air Conditioner

Fully independent from the grid — solar panels and battery storage power your AC day and night.

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Solar attic fan installed on Singapore rooftop
Zero running cost

Solar Fans & LED Lights

Solar-powered ventilation and lighting. Attic fans, ceiling fans, exhaust fans, skylights — zero electricity cost.

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Gen 2 Emporia Vue Smart Home Energy Management System
Smart energy insights

Emporia Vue Energy Management

Monitor whole-home and circuit-level electricity use in real time — know exactly where every kWh goes.

Learn more →
See It In Action

How does Hybrid Thermal Air Conditioning work?

Watch how the WSE Eco Thermal Hybrid system harvests ambient heat to cut your AC electricity bill by 20–50%.

Why Choose WSE

Genuine technology.
Real savings.

Our hybrid thermal AC is genuinely uncommon. Our solar AC-DC systems are engineered specifically for tropical climates. These aren't rebranded off-the-shelf panels.

Hybrid Thermal Air Conditioner
Electricity saving20–50%
Solar panels neededNo
Battery neededNo
NEA ticks5 ticks
Works on any roof✓ Yes
RefrigerantR32
Solar PV System
Grid independenceUp to 100%
System typesHybrid / Off-Grid
Battery storageIncluded
Typical size3–10 kWp
Annual savings~S$1,150–3,840
Payback period5–10 years
50%
Max electricity reduction on AC billsHybrid Solar AC-DC during peak solar hours. Average across all systems: 20–50%.
10%
ECO3 commercial AC savingsPer compressor system. Near-zero capex vs. full system replacement.
The Process

From enquiry to savings in 4 steps

1

Free Consultation

Tell us your AC setup and energy usage. We'll recommend the right solution.

2

Site Assessment

We visit your property, assess roof, sun exposure, and wiring requirements.

3

Custom Quote

Detailed quotation with savings projection and payback timeline. No pressure.

4

Professional Install

Certified team installs and tests your system with minimal disruption.

What our customers say

★★★★★

"Our electricity bill dropped by over 40% the first month after installing the Hybrid Thermal AC. Professional team, explained everything clearly, done in a day."

TL
Tan L.
Homeowner, Singapore
★★★★★

"Retrofitted ECO3 across our office building's multi-split system. Savings appeared in the very next SP bill. ROI under 18 months for a system this size is remarkable."

RK
R. Krishnan
Facilities Manager, CBD
★★★★★

"The Hybrid Solar AC-DC genuinely works — during sunny hours the AC runs almost free. WSE walked me through the tech thoroughly before I committed. No hard sell at all."

JW
James W.
Homeowner, Bukit Timah

Ready to cut your electricity bill?

Free site assessment. No obligation. We'll show you exactly how much you can save.

Renewable Energy →