Panel manufacturer
REC Solar performance guide
REC Group manufactures high-performance panels using their proprietary HJT (heterojunction) cell technology. Their Alpha series panels are among the most efficient in the residential market.
Expected lifespan
28 years
Warranty
25 years
Market share
moderate
Type
panel
Known for
HJT cell technology, TwinPeak design, strong warranty
Common issues with REC Solar
Natural panel degradation
All solar panels lose efficiency over time at roughly 0.5–0.8% per year. Accelerated in extreme heat or poorly manufactured panels.
Typical loss: 3–15%
Cell hotspots
Localised overheating in individual cells caused by micro-cracks, shading, or manufacturing defects. Best detected via thermal imaging.
Typical loss: 5–20%
Check your REC Solar system
Use our free Solar Loss Checker to estimate how much energy your REC Solar system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
How we calculate →