JA Solar Review (Philippines): Huge Local Footprint, Mostly on the Utility Side
Published specifications for the DeepBlue 4.0 Pro (and 3.0). A brand ships several series, so these figures describe this model and not every product the manufacturer sells.
- Rated power
- 475 W (DeepBlue 4.0 Pro)Residential 400–420 W class is the common quote here.
- Module efficiency
- 4.0 Pro about 22.7% · 3.0 about 19.5–21.3%The generation gap is the single most important thing to pin down on a JA Solar quote.
- Cell technology
- 4.0 Pro N-type TOPCon bifacial · 3.0 older mono
- Product warranty
- 4.0 Pro 25 years · 3.0 12 years
- Performance warranty
- 4.0 Pro 30 years to ~87.4% at year 25 · 3.0 25 years
- Temperature coefficient
- not publishedNot stated in the sources checked for either generation.
- Independent testing
- Kiwa PVEL Top Performer; RETC Overall Highest Achiever 2025Sixth consecutive year for the DeepBlue 4.0 Pro on the RETC list.
Source: JA Solar DeepBlue product range. Checked 2026-09-28. Manufacturers revise specifications between series without notice — confirm the figures for the exact model you are quoted before you pay.
What it does well
- The DeepBlue 4.0 Pro pairs about 22.7% efficiency with a 25-year product and 30-year performance warranty, unusually strong for a brand priced alongside Jinko.
- Recognised by two separate independent testing bodies, Kiwa PVEL and RETC, which is an outside check rather than manufacturer marketing.
- Large installed volume in the Philippines, including some of the country's biggest solar farms.
Where it falls short
- The Philippine track record is overwhelmingly utility-scale, and the residential distribution information easiest to find online points at older 270–325 W stock rather than the current generation.
- DeepBlue 3.0 and 4.0 Pro differ enormously — 19.5–21.3% against 22.7%, and a 12-year product warranty against 25. A quote saying only "JA Solar" tells you almost nothing.
- No temperature coefficient published in the sources we checked, so hot-roof performance cannot be compared against rivals that state theirs.
Compare against the other 29 panels we have reviewed
How the DeepBlue 4.0 Pro (and 3.0) compares with the other panels we have reviewed. Listed in no particular order — this puts published figures side by side, it does not pick a winner. Scroll the table sideways to see every column.
| Model | Rated power | Module efficiency | Product warranty | Performance warranty |
|---|---|---|---|---|
| DeepBlue 4.0 Pro (and 3.0) this review | 475 W (DeepBlue 4.0 Pro) | 4.0 Pro about 22.7% · 3.0 about 19.5–21.3% | 4.0 Pro 25 years · 3.0 12 years | 4.0 Pro 30 years to ~87.4% at year 25 · 3.0 25 years |
| Tiger Neo N-type (72HL4 series) | 555–575 W | — | 12–15 years | 30 years to 87.4% |
| Vertex S+ TSM-NEG9R.28 | 430–460 W | Up to 23.0% | 25 years | 30 years |
| HiKu / BiHiKu / TOPHiKu6 lineup | 560–600 W | Up to 22.6% | 12–25 years | 30 years, linear |
| Hi-MO 6 and Hi-MO 7 | — | Hi-MO 6 up to 22.8% · Hi-MO 7 around 23.3% | 12–15 years | Hi-MO 6 25 years to ~84.8% · Hi-MO 7 30 years |
| Q.TRON BLK M-G2+ | 415–440 W | Up to 22.5% | 25 years | 25 years to 90.58% |
| Neostar 2S / 2P (ABC) | 440–520 W | Up to 23.5–24.3% | 15 years | 30 years, linear |
| Maxeon 7 | — | Up to about 24% | 40 years | 40 years to over 88% |
| JW-HD108N / HD144N / JW Max | 445–715 W | — | — | — |
| 575 W bifacial N-type | 575 W | About 22% | — | — |
| Current mainstream lines | — | Roughly 20–22.5% | 15 years | 25–30 years |
| CMD-144 series and Meteor CME-132BDS | 575-595 W (CMD-144), 700-725 W (Meteor CME-132BDS) | — | 30 years | 30 years |
| Astro N series (n-type TOPCon) | — | — | — | — |
| PERC, N-type TOPCon and N-type HJT lines | 425-530 W mainstream residential TOPCon, to 660 W class bifacial | 21.8-24.5% mainstream TOPCon, up to 24.6% | 12 years | 25 years PERC, 30 years TOPCon bifacial |
| n-type TOPCon range | — | — | — | — |
| Series 6 and Series 7 (CdTe thin film) | Around 525 W (Series 7) | 18.8-19.7% | — | 30 years |
| PERC, bifacial, HJT and n-type TOPCon range | 385-730 W across the range | — | — | — |
| Heterojunction (HJT) modules | — | — | — | — |
| LP182*182-M-72-NB (N-type TOPCon) | 565-585 W | 21.86-22.64% | — | 30 years linear |
| N-type TOPCon range | — | — | — | — |
| EverVolt (HJT), discontinued 2025 | — | Roughly 19-21% | — | — |
| PERC, bifacial, HJT and n-type TOPCon range | 400-730 W across the range | — | — | — |
| Alpha Pure-R and Alpha Pure-RX | — | Roughly 21.9-22.6% | 25 years | 25 years |
| Titan series, with a separate Hyper-ion HJT line | — | Around 21.8% mainstream, Titan topping out around 21.7% | 15 years on current lines | 30 years on current lines |
| Tangra series (n-type TOPCon) | — | — | — | — |
| Maxeon back-contact modules | — | Low-to-mid 20% range | — | — |
| SPDG585-600W-N144M10 (SPDG bifacial series) | 585-600 W in this bin | 22.64-23.22% | 15 years | 30 years linear |
| TOPCon residential range | Roughly 395 W up to large-format commercial modules | Around 22%, up to about 23.2% on higher-end SKUs | 12 years | 25 years monofacial, 30 years bifacial |
| N-type TOPCon own-brand modules | — | — | — | — |
| Monocrystalline half-cut PERC range, many bifacial | 360-700 W across residential and commercial lines | Roughly 20.5-22.5% | 10-12 years | 25 years standard, 30 years bifacial |
Dashes are figures the manufacturer does not publish, not zeros. Where two products differ on a spec, which one matters depends on your roof and your usage — a higher efficiency panel earns its premium on a small roof and rarely on a large one.
JA Solar is one of the biggest names in Philippine solar by installed volume — its modules are on some of the country’s largest solar farms and reportedly on the largest solar-powered residence in the country. The DeepBlue line is a solid Tier-1 TOPCon product with real efficiency and warranty credentials. The catch is that most of that Philippine track record is utility-scale, and the residential distribution picture is older and thinner than the brand’s overall market presence suggests.
Local availability
Solaric lists itself as an official Philippine distributor of JA Solar modules, though the specific panels referenced there are older 60/72-cell mono and poly modules in the 270-325W range rather than the current DeepBlue 4.0 Pro generation — so confirm which JA Solar line an installer is actually quoting before assuming it’s the latest TOPCon product. JA Solar’s Philippine reputation is built heavily on utility-scale projects in Luzon and Visayas; a named, current-generation residential channel is harder to pin down than for Jinko. That’s not a red flag on the manufacturer, but it does mean more homework on your end to verify you’re getting DeepBlue 4.0-series product and not older stock.
Efficiency and warranty
The current DeepBlue 4.0 Pro uses N-type TOPCon bifacial cells and reaches about 22.7% efficiency at 475W, backed by a 25-year product warranty and 30-year performance warranty guaranteeing roughly 87.4% of nameplate output at year 25 — a genuinely strong pairing for a mid-tier-priced brand. The older DeepBlue 3.0 line, which is closer to what some Philippine listings actually reference, runs lower efficiency (around 19.5-21.3%) and a shorter 12-year product / 25-year performance warranty. JA Solar also earned Kiwa PVEL “Top Performer” recognition, and RETC named its DeepBlue 4.0 Pro an “Overall Highest Achiever” for a sixth consecutive year (2025) — a separate US testing body from Kiwa PVEL — which together are a credible independent reliability signal regardless of which generation you land on.
Price
JA Solar is frequently cited alongside Jinko as one of the most price-competitive Tier-1 options in the Philippines, with residential panels in the 400-420W class running roughly ₱6,500 to ₱11,000 through installers. Treat this as a starting reference — get a model-specific, itemized quote, since DeepBlue 4.0 Pro and older DeepBlue 3.0 stock aren’t priced the same.
Where it falls short
The biggest practical issue isn’t the panel — it’s confirming what you’re actually buying. JA Solar’s dominant local presence is utility-scale, and the residential distributor information that’s easiest to find online skews toward older, lower-efficiency, shorter-warranty product. If an installer quotes “JA Solar” without specifying DeepBlue 4.0 Pro or an equivalent current model, ask directly — the warranty and efficiency gap between generations is real.
Who it’s best for
Buyers who want a proven, high-volume Tier-1 name and are willing to verify the exact model and generation before committing — this is a case where naming the product matters more than usual. Compare it against Jinko Solar and Canadian Solar for similarly priced Tier-1 alternatives with clearer residential channels, and read our tier-1 vs tier-2 guide and warranties explained guide before signing anything. See the full field in our best solar panel brands guide and panel brand roundup.