FREMONT - Enphase Energy, Inc. (NASDAQ: ENPH), a global energy management technology company and the world's leading supplier of microinverter-based solar-plus-storage systems, announced today financial results for the third quarter of 2020, which included the summary below from its President and CEO, Badri Kothandaraman.
We reported revenue of $178.5 million in the third quarter of 2020, along with a record 41.0% for non-GAAP gross margin. We shipped approximately 478 megawatts DC, or 1,442,743 microinverters.
The financial highlights for the third quarter of 2020 are listed below. The GAAP numbers include an approximate $23 million refund on tariffs which were previously paid on microinverters imported to the U.S. from China. The non-GAAP numbers do not include the tariff refund: Revenue of $178.5 million
Cash flow from operations of $67.5 million; ending cash balance of $661.8 million
GAAP gross margin of 53.2%; record non-GAAP gross margin of 41.0%
GAAP operating income of $51.8 million; non-GAAP operating income of $43.7 million
GAAP net income of $39.4 million; non-GAAP net income of $41.8 million
GAAP diluted earnings per share of $0.28; non-GAAP diluted earnings per share of $0.30
Revenue for the third quarter of 2019 of $180.1 million included approximately $8.0 million of safe harbor revenue.
Our non-GAAP gross margin increased to 41.0% from 39.6% in the second quarter of 2020, driven by disciplined pricing and cost management. Non-GAAP operating expenses increased to $29.6 million in the third quarter of 2020, compared to $26.0 million in the prior quarter, primarily due to an increase in our engineering and sales headcount to support innovation and growth. Non-GAAP operating income was $43.7 million, compared to $23.7 million in the prior quarter.
We exited the third quarter with $661.8 million in cash and generated $67.5 million in cash flow from operations. Inventory was $37.5 million at the end of the third quarter of 2020, compared to $31.2 million at the end of the second quarter of 2020. The sequential increase in inventory was driven by the purchase of battery cell packs to support the increased shipments of Encharge storage systems in the fourth quarter of 2020, along with the expected increase in microinverter shipments.
We started production shipments of our Encharge storage systems to customers in North America in July and ramped volume throughout the third quarter of 2020. The feedback from both installers and homeowners has been positive. Installers like the system's modularity and having a single provider of a rooftop power electronics and battery storage systems, while homeowners value the product's differentiated functionality, industrial design, reliability, safety, and ability to get on and off-grid from a smartphone app. The Encharge storage system features Enphase Power Start technology, allowing homeowners to start motor-driven appliances, such as air conditioners and pumps, in off-grid mode with optimal system size. In addition, the Enlighten energy management software platform gives homeowners the power of insight into the performance of their solar and storage systems. We are excited about the ability to offer our customers peace of mind with our energy independent solution.
Demand for our core microinverter products rebounded strongly in the third quarter of 2020. We experienced record sell-through from distribution to installers, resulting in channel inventory slightly below the low end of our typical target range. Sales to distributors improved significantly and was broad-based geographically. We were also pleased to report our first quarter of significant revenue from the sale of Encharge storage systems.
This press release contains forward-looking statements, including statements related to Enphase Energy's expectations as to future financial performance, expense levels, the capabilities, advantages, and performance of our technology and products, our business strategies and anticipated demand for our products. These forward-looking statements are based on the Company's current expectations and inherently involve significant risks and uncertainties. Enphase Energy's actual results and the timing of events could differ materially from those anticipated in such forward-looking statements as a result of certain risks and uncertainties including those risks described in more detail in the Company's most recent Annual Report on Form 10-K and other documents on file with the SEC and available on the SEC's website at www.sec.gov. Enphase Energy undertakes no duty or obligation to update any forward-looking statements contained in this release as a result of new information, future events or changes in its expectations, except as required by law.
About Enphase Energy, Inc.
Enphase Energy, a global energy technology company, delivers smart, easy-to-use solutions that manage solar generation, storage and communication on one intelligent platform. The Company revolutionized the solar industry with its microinverter technology and produces a fully integrated solar-plus-storage solution. Enphase has shipped more than 30 million microinverters, and approximately 1.3 million Enphase systems have been deployed in more than 130 countries.
Enphase Energy, the Enphase logo, Encharge, Power Start, Enlighten, Enphase Energized, IQ 7+, IQ 7A, Ensemble, and other trademarks or service names are the trademarks of Enphase Energy, Inc. Other names are for informational purposes and may be trademarks of their respective owners.