Badri Kothandaraman
Chief Executive Officer at Enphase Energy
Good afternoon, and thanks for joining us today to discuss our 4th-quarter 2024 financial results. We reported quarterly revenue of $382.7 million, shipped approximately 2 million microinverters and 152 megawatt-hours of batteries and generated free-cash flow of $159 million. Our overall channel inventory remained normal as we exited the 4th-quarter.
And for Q4, we delivered 53% gross margin, 22% operating expenses and 31% operating income, all as a percentage of revenue on a non-GAAP basis, including the net IRA benefit. Mandy will cover the financials later in the call. Let's cover customer service. Our worldwide Net Promoter score was 78% in Q4, the same compared to Q3.
Our average call wait time decreased to 2.8 minutes from 4.4 minutes. We are working to further reduce wait times by leveraging AI and rolling out software fixes. Let's talk about operations. Our global capacity is around 7.25 million microinverters per quarter with 5 million in the US. In Q4, we shipped approximately 1.7 million microinverters from our US contract manufacturing facilities booking 45x production tax credits. We also introduced a higher domestic content SKU for two of our products, the IQ8X microinverter and the IQ8 P commercial microinverters in Q4 to help the commercial asset owners qualify for a 10% domestic content ITC error. We now offer higher domestic content microinverters that cover both residential and commercial solar applications and continue to see good demand for these products from lease, PPA and commercial markets. We expect to ship 1.2 million units, microinverters from our US contract manufacturing facilities in Q1. We also began shipping the IQ battery 5P, our third-generation battery system from our US contract manufacturing facilities during Q4, utilizing domestically made microinverters, battery management systems and enclosures while sourcing cell packs from China. We shipped 6.7 megawatt-hours of batteries from our Texas contract manufacturing facility in Q4. We continue to evolve our sourcing strategy to maximize domestic content opportunities and diversify our geographic exposure. Let's cover the regions. Our US and international revenue mix for Q4 was 79% and 21% respectively. In the US, our revenue increased 6% in Q4 compared to Q3, driven by 11% increase in microinverter sales. This increase was due to strong demand for our higher domestic content microinverters. Our battery sales were down 8% in Q4 compared to Q3 due to lesser channel restocking as we had previously anticipated. Our overall sell-through of products was flat in Q4 compared to Q3. We are generally seeing stable demand in the US, both in California as well as outside of California. NEM 3.0 currently represents 66% of our installs in California with a 45% attach rate for our own batteries. The adoption of batteries is steadily increasing across the US due to new tariff structures like, VPP programs and the need for resilience. In Europe, our revenue was down 25% in Q4 compared to Q3, while our overall sell-through declined by 13%. The overall business environment across the region is still challenging, but we are maintaining discipline on controlling the channel and expanding our served available market by introducing new products. I'll provide some additional color on key markets in Europe, the Netherlands, followed by France, Germany and the UK. In the Netherlands, demand remains weak, but has stabilized. The market is transitioning away from solar-only systems to solar plus batteries, which avoids export penalties and allows participation of residential solar plus battery systems in energy markets. We announced new collaborations with two retail energy providers during Q4 that enabled homeowner access to dynamic tariffs and participation in the imbalanced markets, both of which can improve payback to better than six years even without net metering. We expect to announce more partnerships with Dutch energy providers in the future and see gradual improvement in this market as we progress through 2025. We also started shipping our new IQEV chargers into Netherlands in the 4th-quarter. In France, the market is slowing down due to the recent utility rate cuts. France remains a key long-term growth market for us, given our leadership and low solar penetration. We started shipping our IQEV chargers into France in the 4th-quarter. We plan to introduce hot water heater compatibility in Q2, enabling homeowners to do heating with excess solar car green heating. We also plan to introduce backup capability for our batteries, further enhancing resilience for homeowners. As the feed-in tariffs in France gradually reduce, the value of solar plus batteries along with home energy management continues to rise. In Germany, we are excited about a few new products that will expand our reach. In early-January, we started shipping the IQ battery 5P with FlexPhase, a new product to customers in Germany, Austria and Switzerland. The early feedback has been very positive and we see an opportunity to increase share in the region now that we have three-phase backup capability. We also recently started shipping our new IQ EV chargers into Germany. In addition, we expect to introduce our IQ balcony solar solution in Q2. We believe microinverters are ideal for small systems and this product is expected to increase our served available market in Germany by approximately 400 megawatts per year. A bright spot for us is the, where we are growing steadily. We recently-announced that our systems are integrated into Octopus Energy's smart import and export tariffs such as the intelligent Octopus flux that is designed to optimize the charging and discharging of solar plus battery systems, aiming to provide customers the best rates for buying and selling electricity. We expect to start shipping our new IQEV chargers into the UK shortly in Q1. We are still underpenetrated in many countries in Europe, including the, Italy, Spain, Belgium, Luxembourg, Switzerland, Austria and Poland. While each country faces its own unique challenges and opportunities, homeowners are prioritizing safety, reliability, quality, savings and an all-in-one app experience for their home energy systems, which aligns well with our core strengths. We plan to introduce our entire suite of products, the IQ8 microinverters, both single and three-phase batteries with backup, new IQEV chargers and the AI-powered home energy management software along with the solar graph installer platform across a lot more European countries throughout 2025. We continue to make incremental progress in other regions. In India, our IQ8 P and IQ8 HC, these are the high-powered microinverters. Those sales continue to ramp and we began shipping the IQ battery 5T in December. We also recently started shipping the high-powered microinverters into Vietnam and Malaysia, further expanding into Southeast Asia. Additionally, we are building momentum in Thailand and Philippines, steadily ramping-up businesses in these growing markets as demand for high-quality, reliable energy solutions continues to rise. Let's cover Japan. We are especially excited about Japan's 1.3 gigawatt solar market, where we recently began piloting installations and plan to ship IQ8HC microinverters in Q2. The Tokyo Metropolitan government subsidies for MLPE make the market even more attractive for consumers. Japan's solar landscape aligns well with small systems, two to three kilowatts, complex roofs, strong demand for quality. These are all well-aligned with our strengths. Let's come to-Q1 guidance. We are guiding revenue in the range of $340 million to $380 million. We anticipate recognizing approximately $50 million in Safe-Harbor revenue in Q1, partially offsetting seasonality. We define Safe-Harbor revenues any sales made to customers who plan to install the inventory over more than one year. We are approximately 85% booked to the midpoint of our overall revenue guidance. We expect to ship between 150 and 170 megawatt-hours of IQ batteries, slightly higher than Q4. Before we talk about new products, let's discuss the growing importance of energy market participation. In many markets worldwide, REPs are regional energy providers and VPP programs are offering homeowners attractive ROI by utilizing their solar plus battery systems to buy and sell energy. We Believe in Phase Energy systems offer best-in-class reliability, customer support and API integration, which are important for REPs and VPP programs. We look-forward to sharing with you our progress in these markets as we go through 2025. Let's cover new products starting with IQ batteries. As I said before, our third-generation battery continues to gain traction in the US as well as worldwide. In the US, we introduced two key system enhancements to improve flexibility and reduce costs. The first is bus bar power control software, which allows homeowners to install larger solar and battery systems without costly main panel upgrades. The second is power control software for NEM expansion, enabling homeowners in California to expand legacy NEM systems without any penalty. These advancements provide homeowners with increasing flexibility and cost-savings and are being well-received by installers. We are making excellent progress with our fourth-generation IQ battery, which offers 60% less wall space, thanks to its integrated battery management and power conversion architecture. The battery pairs with our IQ meter collar and new enhanced combiner, reducing installed costs by approximately $300 per kilowatt-hour for a typical backup system, making us highly competitive across all use cases. We have achieved UL compliance for the meter collar and we are now working on getting approval from the California utilities. We expect to pilot our fourth-generation battery in the US in the first-quarter. The IQ8 commercial microinverter with its new three-phase cabling system is ideal for 208 volt small commercial solar installs between 20 and 200 kilowatts. We have over 516 sites in the US with an average size of 40 kilowatts and the feedback so-far has been positive. These three-phase microinverters are now shipping from the US with increased domestic content offering a 10% ITC adder for commercial asset owners, which should drive-up demand even further. One more positive thing to note is that our IQ8 residential and commercial microinverters are now in compliance with the Build America, Buy America Act, BABA. Let me provide an update on IQ 9 powered by gallium nitride technology. The IQ 9 family is built for higher DC input currents, handling up to 18 versus IQ8, which handles up to 14. IQ 9 also supports a wide range of AC grid voltages, including 240 volts, 208 volts and 480 volts for both residential and commercial markets. Leveraging GaN high voltage transistors, these microinverters deliver AC -- high AC output power of 427 watts and 548 watts at a lower-cost. We remain on-track to launch IQ 9 in the second-half of this year for both residential and commercial markets with a significant SAM expansion driven by compatibility with 480 volts AC commercial systems. Let's dive into EV charging. We started shipping our new IQ EV charger across several countries in Europe, tapping into a $1.4 billion annual market. The next-generation smart charger is designed to work seamlessly as part of our energy system or as a powerful standalone charger. Key features of this new IQ EV chargers include dynamic phase switching and fine-grained current control for efficient green charging, dynamic load balancing, ISO 15 15-118 support for AC bidirectional vehicle expansion and compatibility with MID meter for Germany as well as compatibility with OCP Cloud Software 2.01, making it a very comprehensive and future-ready solution. In Q4, we began shipping the iQ 1,500 product to customers in the US and Canada. This 1.5 kilowatt-hour smart portable energy system incorporates all of Enphase's core technologies of power conversion, battery management and software. You should think about it as n-phase in a box. During the recent LA fires, Enphase donated a Power along with an organization called Empowered by Light to support relief efforts with some firefighters who were using them to power their communications gear. We are excited to enter this growing consumer market and plan to expand the power pack globally in 2025. Let's talk briefly about Solar Graph, our installer platform. We added a lot of new features to Solar Graph in 2024 with ease of doing design as a goal. Solar Graph is now available to installers in the US, Canada, Brazil, Germany, Austria, Netherlands, France with plans to expand into more countries in the coming quarters. Looking ahead, we are working on key enhancements to solar graph, including auto roof detection, ultra-fast proposals, UI UX overhaul and expanded C&I features, making solar graph even more powerful and in future. Let me conclude. We successfully navigated a challenging 2024, generating strong free-cash flow and profitable and profitability, while bringing down channel inventory to normalized levels. We entered 2025 with a continued focus on operational efficiency, product reliability, customer service, product breadth and geographic expansion. We have also doubled down on US manufacturing for microinverters and batteries, which we believe is good for our customers, economy and for. There is some uncertainty around government policies for our industry, both in the US and abroad. But one trend is very clear. Centralized grids need more support to keep up with the increased electricity demand. Unsubsidized free markets are increasingly turning to distributed energy systems to help balance the grids through our ETs and VPP programs. We see this trend increasing and getting stronger as we look-ahead and believe we are well-positioned there. We believe our new products will help drive gradual revenue growth throughout 2025 with Safe-Harbor ordering in the US having the potential to accelerate growth as we progress into the second-half of 2025. We remain committed to delivering best-in-class solutions and are energized by the road ahead. With that, I will turn the call over to Mandy for her review of our financials. Mandy?