- 21.5% SunPower solar modules hold the commercial solar module efficiency record. SunPower’s SPR-327NE-WHT-D modules are also the leading solar modules in solar module yield field tests, and other SunPower solar modules come in #2 and #3 in those tests. (For those of you to who this matters or is interesting, SunPower is a US-based solar panel company.)
What Solar Modules are the Most Effiecient? The SunPower we use are pretty nice.
