Astronergy
CHSM54M(BK)-HC 450W
Budget N-type TOPCon bifacial panel in full black. 450W, up to 22.5% efficiency, 25-year product warranty.
£79.99 per panel
How it scores
Scores based on published manufacturer specifications and weighted criteria — not lab testing. Methodology.
Specifications
- Cell type
- TOPCon N-type
- Watt peak
- 450
- Weight kg
- 24.4
- Dimensions mm
- 1762x1134x30
- Efficiency %
- 22.5
- Degradation % years
- 0.4
- Warranty product years
- 25
- Warranty performance years
- 30
- Temperature coefficient %
- -0.29
What I noticed
Astronergy is a subsidiary of CHINT Group, one of China's largest energy conglomerates, and manufactures panels under strict quality controls for global markets. The 450W N-type TOPCon bifacial module in full black is their value flagship: entry-level pricing with current-generation N-type cell technology. At £79.99 per panel, it's the most affordable route to N-type TOPCon in this comparison.
The bifacial design means the rear side of the panel can capture reflected and diffuse light from the roof surface — typically adding 5–15% real-world output depending on roof colour and tilt. Dual tempered glass protects both faces and provides a 25-year product warranty backed by a major manufacturing conglomerate, which matters for long-term confidence.
Who it suits
Budget-conscious installs where you want N-type TOPCon efficiency gains without paying the premium of Longi or Jinko. Good for larger arrays where panel count is high and the per-panel saving compounds significantly. The full-black aesthetic is practical for roofs where visual uniformity matters.
What I'd watch for
Astronergy has less UK installer familiarity than tier-1 brands like Longi or Canadian Solar — confirm your installer has experience fitting these before specifying. At 24.4kg, these are heavier than most equivalents; factor this in for older roof structures.
