“Over-sizing” v. “Right-sizing”: New Ideas for One of Solar’s Oldest Debates

Jan 18

A common question asked of Enphase installers is, “Why are you installing a 260 watt solar module on a 215 watt microinverter?” But, there is no “common answer” to this question. Though the practice of “over-sizing” solar modules relative to the inverter has existed for decades, it remains one of the trickiest...

Testing 2.0: Improving Predictions of Inverter Performance

Jun 21

Posted by David in Enphase Updates

We’ve previously highlighted on this blog research showing microinverters deliver higher performance than predicted by industry-standard PV performance calculators, such as PVWatts and PVsyst. More recently, this topic received attention from the industry’s top laboratory. Last month, the National Renewable Energy Laboratory...

Understanding Solar Performance in the Real World

Aug 31

Posted by David in Enphase Updates

Everyone knows that solar can help the planet, and many know it can also help their pocketbook, but in either case, the real question is: “how much?” The amount of energy a solar array produces is at the heart of answering this question. Solar integrators estimate the energy production of a solar array using modeling tools that...