Solid all-round for its segment
The Hiwatt Solar HW-P360H(275-295) series is designed for stable energy production in real-world operating conditions, rather than just in a laboratory setting. The modules utilize a half-cell design, which minimizes internal losses and improves panel performance under partial shading - a significant factor in Poland, where roofs often have chimneys, dormers, or antennas. The use of N-type technology helps maintain consistent energy yields over time, while also enhancing resistance to degradation-causing factors. The module's increased PID resistance is also noteworthy, as it is important in installations operating at higher system voltages and in environments with fluctuating humidity. The manufacturer also highlights reduced hot-spot losses due to an optimized electrical design, which translates to increased safety and a lower risk of localized overheating. This makes it a good choice for rooftop and small-scale installations, where predictability, durability, and lower energy costs over the entire lifespan are key considerations.
Ranking
Signals from the data
Residential, commercial and shaded-installations.
The series delivers 16.6–17.8% module efficiency, significantly outperforming direct peers at the same 295 Wp maximum power: Huasun HSN-210R-B64 and 64 Half-cell HJT modules at 14.8%, and Solar-Fabrik Mono S4 Halfcut at 15.11%. The gap of up to +2.7 percentage points translates to a meaningfully smaller roof area required for the same system output.
N-type cells exhibit lower Light Induced Degradation (LID) compared to P-type PERC, resulting in higher annual energy yield over the system's lifetime. The half-cut cell architecture reduces resistive losses and improves performance under partial shading — a practical advantage on Polish rooftops with chimneys, dormers, and antennas.
The manufacturer declares elevated resistance to Potential Induced Degradation, critical in high-voltage string configurations (≥1000 V) and in Poland's climate of variable humidity and temperature swings. This mitigates the risk of permanent power loss across multi-module strings over long-term operation.
Optimized electrical design — including half-cut cell layout and independent bypass diodes — lowers the risk of localized overheating, one of the leading causes of mechanical damage and fire in rooftop installations. This results in improved operational safety over the system's lifetime.
Hiwatt Solar backs the series with a 25-year linear power output warranty, meeting European market expectations. For residential prosumers and small ground-mount farms, this provides financial predictability and full output protection throughout the typical financing period.
The HW-P360H(275-295) line ended production in 2023. New module availability is limited to remaining distributor stock, and sourcing additional panels for system expansion will become impossible over time. This represents a genuine risk in the event of panel damage or future capacity additions.
Hiwatt Solar does not appear on BloombergNEF's bankable Tier-1 module manufacturer list. For projects financed through bank loans or leasing, this can be a hard blocker — many lenders require Tier-1-listed products as collateral security over the full financing term.
The 295 Wp ceiling was market-standard in 2021 (the release year), but the residential segment has moved to 400–440 Wp as the norm in 2025–2026. Installing these modules today requires approximately 35–40% more panels for the same peak output, increasing BoS costs (cabling, racking, and labor).
Leading Tier-1 manufacturers (e.g., LONGi, JA Solar, Jinko Solar) routinely offer 15-year product warranties on modules from the 2023–2025 generation. The HW-P360H's 12-year coverage provides 3 fewer years of full factory defect protection compared to today's competitive benchmark.
- Efficiency of 17.8% is 4.0pp below the database median (21.8%)
- Power density of 177.9 W/m² is 40.2 W/m² below database median (218.1 W/m²) - needs more roof space
- Temperature coefficient of -0.34%/°C is 0.04pp worse than database median (-0.30%/°C) - higher losses in summer heat
- At 17.8 kg, this panel is 8.7 kg lighter than database median (26.5 kg) - easier handling during installation
- Ranked #13274 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.
Alternatives
Found 114 panels of the same or similar size to this one, within ±10 mm. See them here Found 375 panels of the same or similar size to this one, within ±25 mm. See them here Found 432 panels of the same or similar size to this one, within ±50 mm. See them here Found 735 panels of the same or similar size to this one, within ±100 mm. See them here