Middle of its segment, modest efficiency
The Hiwatt Solar HW-M12/132H solar panel series utilizes the potential of large-format M12 monocrystalline cells with a 210 mm side, which forms the foundation of their technological advantage on the market. Thanks to the use of advanced multi-busbar (MBB) technology, these modules offer a shorter current flow path, which effectively minimizes resistive losses and increases the overall efficiency of solar energy conversion. The design based on 132 half-cut cells ensures that the panels perform excellently in partial shading conditions, eliminating the problem of a sudden drop in the performance of the entire installation. This solution is dedicated primarily to demanding industrial installations and photovoltaic farms, where the priority is to optimize cabling and mounting structure costs while maintaining the highest yields per square meter. What sets this series apart from competing solutions is its exceptional mechanical resistance to extreme weather conditions, such as strong winds or heavy snow, which, combined with a low temperature coefficient, guarantees stable power production even during summer heatwaves. HW-M12/132H resolves the dilemma between high unit power and component durability, delivering a product ready for the challenges of modern energy, ensuring a fast return on investment by minimizing the cell degradation effect in the long term.
Ranking
Signals from the data
Tight roof space, roofs where every square metre has to count and owners who want a long output guarantee.
Bottom 3% of the PERC 650-700 W segment, against a median of 21.25%. Ranked 10,072nd in the whole database.
Bottom 7% of the PERC 650-700 W segment, against a median of 212.5. Ranked 10,011th in the whole database.
Bottom 21% of the PERC 650-700 W segment, against a median of 30 yrs.
132 half-cut 210 mm cells with 12-busbar multi-busbar (MBB) architecture shorten the current path, cutting resistive losses by approximately 1.5–2% compared to standard full-cell modules. Under partial shading, splitting each cell into two independent sub-circuits limits the shading impact to half the panel rather than the entire string.
A peak power of 670 Wp reduces the module count on a PV farm, directly lowering BoS costs (cabling, racking, labor) by an estimated 8–12% versus the 550 Wp class dominant just three years ago. The series is well suited for utility-scale projects and large industrial rooftops.
Maximum efficiency of 21.6% is virtually identical to direct PERC M12 peers: Techwise Solar Summit Series (21.57%) and ZNShine ZXM8-TP132 Series (21.57%). The series does not underperform against comparables based on the same PERC M12 platform.
The manufacturer provides a 25-year linear power output warranty, meeting segment standards and supporting LCOE financial models over a standard 25-year analysis horizon. Linear degradation coverage reduces investment risk for plant owners.
The series carries IEC 61215 (electrical performance) and IEC 61730 (module safety) certifications, satisfying the minimum requirements for lender due diligence and public tenders. Comparable Hiwatt modules are rated for wind loads ≥2,400 Pa and snow loads ≥5,400 Pa.
PERC cells exhibit higher light-induced degradation (LID) than N-type cells, resulting in lower long-term annual yield. The direct peer comparable AIKO Comet 2U (AIKO-G-MCH72Mw, same 670 W power class) achieves 24.8% efficiency via ABC technology — 3.2 percentage points above the 21.6% maximum of this series. For the same installed capacity, AIKO requires approximately 13% less roof or ground area.
Hiwatt Solar does not appear on the BloombergNEF Tier 1 module manufacturer list (confirmed as of Q1 2026). For projects requiring project finance or institutional lending, the absence of a Tier 1 / bankable rating complicates securing favorable credit terms and may be disqualifying in tenders that mandate a bankable manufacturer.
The product workmanship warranty covers 12 years, whereas leading Tier 1 manufacturers in this power class (JA Solar, Jinko Solar, LONGi) routinely offer 15 years. The 3-year gap means manufacturing defects discovered between years 12 and 15 of operation fall outside the manufacturer's warranty, creating unhedged risk for the plant operator.
- Efficiency of 20.9% matches the PERC 650-700W median
- Power density of 209.2 W/m² is 3.2 W/m² below PERC 650-700W median (212.5 W/m²) - needs more roof space
- Temperature coefficient of -0.34%/°C matches the PERC 650-700W median
- At 35.7 kg (1.2 kg above PERC 650-700W median of 34.5 kg), requires checking roof load capacity
- Ranked #10072 out of 14005 panels for efficiency in the database
Specifications
Simulations
Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.
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