Solar panelsREC Alpha Pure-R
400–430 W · best for hot roofs: low heat loss
4.9 out of 5 from 1,235 owner reviews of REC solar panels
- Efficiency
- 22.3%
- Temp. coeff.
- -0.24%/°C
- Year 25
- 92.0%
Why it scores 6.6.
Each part comes from the datasheet with a published rule; anything not stated scores zero.
How we rate solar panelsOutput guaranteed at year 25
10.0 · 25%
What the panel promises to still produce after 25 Australian summers. It compounds every year.
Rule: Worked out from the datasheet's first-year and annual degradation: 84% scores 0, 92% scores 10.
Product warranty
5.0 · 25%
Covers defects in the panel itself. Twelve years is the floor; the best give 25 or more.
Rule: Years of product warranty: 10 scores 0, 30 scores 10.
Heat performance
10.0 · 20%
Panels lose output as they heat up, and roof panels often pass 65°C in summer.
Rule: Temperature coefficient of Pmax: -0.38%/°C scores 0, -0.24%/°C scores 10.
Efficiency
4.0 · 20%
More watts from each square metre, which matters most on small or broken-up roofs.
Rule: Highest module efficiency in the range: 20.5% scores 0, 25% scores 10.
Performance warranty length
0.0 · 10%
How long the output guarantee runs.
Rule: Years: 25 scores 0, 30 scores 10.
Full specifications.
8 approved models · Australian datasheet
- Power
- 400–430 W
- Highest efficiency
- 22.3%
- Temperature coefficient (Pmax)
- -0.24%/°C
- First-year degradation
- 2%
- Annual degradation after year 1
- 0.25%
- Output at year 25 (our calculation)
- 92%
- Product warranty
- 20 years (25 years with REC ProTrust)
- Performance warranty
- 25 years
- Cell technology
- Heterojunction (HJT)
- Size
- 1730 × 1118 mm
- Weight
- 21.5 kg
- All-black look
- Yes
About the brand
REC solar panels
A premium European-founded brand with a loyal installer following and good extended warranties through certified installers. Its recent independent test record and efficiency don't match today's leaders for the price.
Read the REC reviewBrand rating#7 of 8 brands for solar panels
See your home's score in two minutes.
Free, independent and no obligation. Up to three vetted installers quote on your bundle.