Aiko Solar is the pioneer of ABC (All Back Contact) technology, a new generation of solar panels with all electrical contacts located on the back of the panel. This pushes efficiency as high as 24.8% (670W model) and up to 25.5% in the Comet 3N72 series, holding the top spot in the TaiyangNews Top Solar Modules ranking for 34 consecutive months. It is an exceptionally good fit for Thailand's climate.
5 Standout Features of Aiko
- 24.8% efficiency (670W model) - the highest in the mass-production class
- Temperature Coefficient -0.26%/°C - excellent heat resistance, ideal for Thailand
- Partial Shading Optimisation - performs well under partial shade
- Sleek, clean panel face - rear contacts, no front grid, perfect for modern homes
- 15-year warranty (extendable to 25 years) + 30-year Performance warranty by Munich RE
Table of Contents
1. Getting to Know Aiko Solar
Aiko Solar (Zhuhai Aiko Solar Energy Technology Co., Ltd.) is a solar panel manufacturer from China and the global pioneer and leader in N-Type ABC technology. It has held the top spot in the TaiyangNews Top Solar Modules Ranking for 34 consecutive months (as of December 2025).
Aiko has repeatedly broken solar panel efficiency records at the mass-production level. Today, Aiko reaches 24.8% in the Comet 2U / 25.5% in the Comet 3N72, while its latest INFINITE series achieves 25.2%+.
Efficiency (670W)
Highest in the mass-production market
Consecutive months
TaiyangNews Top Ranking
Export countries
Worldwide
2. What Is ABC Technology?
ABC (All Back Contact) is a technology that moves all electrical contacts to the back of the panel, unlike standard panels (PERC/TOPCon/HJT) that have a silver finger grid on the front.
Advantages of ABC
1. Captures a Full 100% of the Light
With no front grid blocking the light, the light-receiving surface increases, so more sunlight is converted into electricity.
2. Lower Electrical Losses
The rear contacts have lower resistance, so energy conversion is more efficient.
3. Clean, Sleek Panel Face
From the front the panel looks smooth and uniformly black with no visible lines, perfect for modern and minimalist homes.
4. Partial Shading Optimisation
ABC cells keep working even under partial shade, reducing hot spots and cutting losses caused by shadows.
3. Efficiency of Each Aiko Model
Aiko has 3 main series sold in Thailand:
Comet 2N (605W-630W) - Second Generation
| Power | Efficiency | Voc | Isc |
|---|---|---|---|
| 605W | 23.0% | 54.09V | 14.28A |
| 620W (model sold) | 23.5% | 54.39V | 14.52A |
| 630W (max) | 23.9% | 54.59V | 14.68A |
Comet 2U (645W-670W) - Mono-Glass
| Power | Efficiency | Voc | Isc |
|---|---|---|---|
| 645W | 23.9% | 54.30V | 15.06A |
| 650W (model sold) | 24.0% | 54.40V | 15.12A |
| 670W (max) | 24.8% | 54.80V | 15.36A |
Comet 3N72 (655W-690W) - Third Generation ⭐ Editor's Pick
| Power | Efficiency | Voc | Isc |
|---|---|---|---|
| 655W | 24.2% | 54.10V | 15.16A |
| 660W | 24.4% | 54.20V | 15.22A |
| 665W (model sold) | 24.6% | 54.35V | 15.28A |
| 670W (model sold) | 24.8% | 54.50V | 15.35A |
| 680W | 25.2% | 54.80V | 15.47A |
| 690W (max) | 25.5% | 55.20V | 15.59A |
💡 Compared to Standard Panels
The Aiko 670W (24.8%) versus a P-type 600W panel (21.5%) over the same area:
- Power difference of +70W (12%)
- A 40 sq.m. roof fits 12 panels = Aiko 8,040W vs P-type 7,200W
- About ~1,260 kWh more generated per year = savings of ~6,300 THB/year (at an electricity rate of 5 THB/unit)
- Over 30 years = additional savings of ~189,000 THB
4. Better Heat Resistance Than Standard Panels
Thailand's climate is hot, reaching 35-40°C in summer, and solar panels on a roof can heat up to 60-70°C, which reduces efficiency.
Aiko's Temperature Coefficient = -0.26%/°C (the lowest in the mass-production market):
| Panel Temperature | Loss vs STC (25°C) | Aiko 670W Power |
|---|---|---|
| 25°C (STC) | 0% | 670W (100%) |
| 45°C (typically hot) | -5.2% | ~635W |
| 60°C (very hot) | -9.1% | ~609W |
| 70°C (midday) | -11.7% | ~592W |
Standard panels have a temperature coefficient of -0.30 to -0.35%/°C, losing roughly 1.5-2% more at 60°C. Aiko = ideal for Thailand's climate.
5. Degradation and the Munich RE Warranty
30-Year Linear Performance Warranty
| Year | Minimum Guaranteed Output |
|---|---|
| Year 1 (First-year) | ≥99% of original output |
| Years 2-30 | Degradation ≤ 0.35%/year |
| Year 15 | ~90.6% |
| Year 30 | ≥88.85% |
Warranty Partner: Munich RE
Munich Re is the world's largest insurer and backs Aiko's solar panels. This means that if Aiko ever goes out of business, Munich RE will take over responsibility for the 30-year Performance Warranty for maximum peace of mind.
What the Warranty Covers
- 15-year Product Warranty (extendable to 25 years) - covers manufacturing and materials
- 30-year Performance Warranty - output no lower than 88.85% after 30 years
- TIER 1 BloombergNEF - a brand banks are ready to finance
- IEC 61215, IEC 61730, CE, CQC, TUV standards, and Munich RE Coverage
6. Aiko Models Sold in Thailand
QES Energy sells 4 Aiko Solar models spanning 3 series:
Aiko 620W (Comet 2N)
N-Type ABC / Second Generation
- 23.5% efficiency
- Compact size, ideal for narrow roofs
3,099 THB View Product
Aiko 650W (Comet 2U)
N-Type ABC / Mono-Glass
- 24.0% efficiency
- A balance between power and size
3,299 THB View Product
Aiko 665W (Comet 3N72)
N-Type ABC / Third Generation
- 24.6% efficiency
- High power output, the best value
3,399 THB View Product
Aiko 670W (Comet 3N72) ⭐ Editor's Pick
N-Type ABC / Third Generation
- 24.8% efficiency (highest model sold)
- Best value for typical roofs
3,499 THB View Product
7. Why Aiko Suits Thailand
✅ Hot and Humid Climate
The lowest temperature coefficient (-0.26%/°C) means the least power loss when panels get hot.
✅ Moisture Resistance + IP68 Junction Box
An IP68 Junction Box and an anodized aluminum frame withstand Thailand's weather.
✅ Homes With Shade From Trees
Partial Shading Optimisation reduces the impact of partial shade.
✅ Munich RE Coverage
Insurance from the world's largest reinsurance company means 30 years of confidence.
✅ Resistant to Wind, Snow, and Hail
Max static load: Front 5400Pa / Back 2400Pa | Hail test: 25-35mm @ 23-27 m/s
8. Pricing
Aiko Solar pricing at QES Energy (May 2026):
| Model | Series | Efficiency | Price | Price/Watt |
|---|---|---|---|---|
| Aiko 620W | Comet 2N | 23.5% | 3,099 THB | 5.00 |
| Aiko 650W | Comet 2U | 24.0% | 3,299 THB | 5.08 |
| Aiko 665W | Comet 3N72 | 24.6% | 3,399 THB | 5.11 |
| Aiko 670W | Comet 3N72 | 24.8% | 3,499 THB | 5.22 |
9. Frequently Asked Questions
- Narrow roof: Aiko 620W (Comet 2N) - smaller size
- Typical home (Editor's Pick): Aiko 670W (Comet 3N72) - the highest efficiency we sell and the best value
- Commercial projects: Aiko 665-670W (Comet 3N72)
Summary
Aiko Solar is the solar panel best suited to Thailand:
- ✅ Class-leading 24.8% efficiency (670W model) - the highest in the mass-production market
- ✅ Best-in-class heat resistance at -0.26%/°C - ideal for Thailand's climate
- ✅ Partial Shading Optimisation - great for homes with trees
- ✅ Annual degradation ≤0.35%/year - degrades slower than average
- ✅ Munich RE Warranty Partner - 30-year Performance confidence
- ✅ TIER 1 BloombergNEF + RedDot Design Award + Intersolar Award
Consult the QES Energy engineering team to pick the Aiko model that fits your roof. Line: @qesenergy | Call 083-987-2899