A solar panel produces direct current (DC), but your house and the grid run on alternating current (AC). Something has to convert one into the other. The traditional approach wires many panels together into a single large “string” inverter. The microinverter approach puts a small inverter on each panel, so the conversion happens at the source. That architectural choice is the entire foundation of Enphase's business.
Because the product is one small device per panel, the company's economics are a volume story, and the filings show it plainly. Enphase's Q1 2026 10-Q reports that the company sold approximately 1.4 million microinverter units and shipped 103.1 MWh of storage during the three months ended March 31, 2026. Read those two figures together and you have the whole model: a high-volume hardware unit, plus a growing energy-storage attach.
The per-panel design has practical consequences a reader can reason about. If one panel is shaded or fails, only that panel's output drops, because each has its own inverter; in a single-string design, one weak panel can drag down the whole string. The trade-off is that you now have many small electronics units to manufacture, ship, install, and stand behind under warranty, which is why unit volume and reliability dominate the company's disclosures.
The second leg, storage, is where the model is evolving. Enphase's filings describe systems built on its Ensemble OS energy platform, powering microinverter-based storage, and the company ships its IQ Battery systems to homeowners. The 103.1 MWh shipped in the quarter is the number that tracks how fast the company is becoming a battery business as much as an inverter business. A megawatt-hour shipped is a unit of attach, not a unit of hype.
If you want to watch this business, watch those two counts quarter over quarter, not the marketing. The figures here were surfaced via EdgarBeast, the SEC filing data API and evidence index, and the primary record is Enphase's Q1 2026 10-Q on sec.gov. The physics of conversion does not care about the press release; the unit count does.