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- From EV Charger to Grid Asset: Engineering Flexible Energy With Enphase
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From EV Charger to Grid Asset: Engineering Flexible Energy With Enphase
Electricity demand is surging. EVs are multiplying in driveways. Data centers are coming online at breakneck speed, projected to more than double electricity demand by 2030.¹ At the same time, renewable energy sources are becoming more distributed and flexible. Today, the grid isn't just strained; it's fundamentally mismatched to how we now produce and consume energy.
For over 20 years, Enphase Energy has been pioneering energy management technology. With over five million microinverter-based systems deployed worldwide, Enphase has already delivered 107 terawatt-hours of clean energy.² That’s enough to power nearly 15 million homes a year.
For Enphase, the next step is intelligent coordination: enabling this clean energy capacity to dynamically respond to grid needs at scale. With this vision, homes could become power plants — flexible, connected assets that support grid stability instead of adding strain.
To enable this shift, Enphase partnered with NXP to build the secure, real-time control foundation for its next generation of grid-interactive systems, beginning with bidirectional EV charging.
The Challenge: Scale, Security and Speed
With its new IQ Bidirectional EV Charger , Enphase set out to transform the EV from a passive load into an active grid participant. The vision: enable the car battery to power the home during outages, dispatch energy back to the grid during peak demand and respond dynamically to real-time grid signals — all while putting money back in the homeowner's pocket.
Engineering a bidirectional charger that works at scale introduced a system-level engineering challenge. The charger had to support ISO 15118-2 and -20 protocols for vendor-agnostic vehicle communication, safely manage high-voltage DC power while synchronizing with solar generation and home storage as well as maintain secure cloud connectivity for orchestration and over-the-air updates.
Designed for deployment across millions of homes, the system also had to meet infrastructure-level expectations. When utilities rely on aggregated EV batteries to deliver gigawatts of flexible capacity, communication must be authenticated and encrypted, firmware integrity enforced and control pathways secure under all conditions.
For a company with a reputation for safe, long-lasting systems, trust was the foundation. Beyond technical requirements, the platform had to be standards-compliant, secure and production-ready — fast.
“Our vision is to advance a sustainable future for all by empowering people to make, use and share their own clean energy. With NXP as a key partner — providing intelligent, system-level technology, and design expertise— we’re building reliable, resilient, and flexible energy solutions that put power in the hands of the people.”
Enphase needed more than a silicon supplier. They needed a system-level partner that could accelerate delivery while embedding trust in every layer. That’s where NXP came in.
The Solution: A Trusted, Intelligent System
Collaborating from the earliest R&D stages, Enphase and NXP approached the IQ Bidirectional EV Charger as a complete system solution. NXP provided design support and a comprehensive EVSE reference platform built around the i.MX 93 applications processor. This solution delivered the compute performance and power efficiency required for real-time bidirectional communication and complex orchestration.
Enphase adopted NXP's validated platform, which integrated Wi-Fi®, Bluetooth® Low Energy, NFC authentication, USB connectivity, power management and real-time control into a cohesive architecture.
Inside the System
| Category | Product | Description |
|---|---|---|
| Processing and Timing | i.MX 93 | Industrial-grade applications processor with Arm® Cortex®-A55 cores, integrated Edge AI acceleration, display and interface controllers such as CAN, Ethernet, and USB |
| PCA2131 | Ultra-low power RTC with automotive qualification for reliable timekeeping | |
| Power Management | PCA9452 | Optimized power solution for i.MX 8/9 series processors with multiple buck converters, dynamic voltage scaling (DVS), programmable ramp up and down time, remote sensing and IR drop compensation |
| Security | SE051 | Hardware-based root-of-trust, secure authentication and key management for IoT devices |
| Connectivity | 88W9098 | High-performance tri-radio wireless solution for intelligent edge devices |
| PN7160 | Integrated NFC controller for contactless communication and authentication | |
| PTN5150 | USB-C configuration channel controller for device role detection and cable orientation |
NXP engineering services worked directly with Enphase R&D throughout development to ensure design conformance and support production readiness. This collaboration enabled rapid movement from concept to deployment while maintaining the rigorous standards expected for grid-connected infrastructure.
Results: Value Across the Energy Ecosystem
The IQ Bidirectional EV Charger is expected to deliver measurable value across the ecosystem.
For homeowners, it will enable backup power during outages, optimize energy costs and create new revenue streams through grid services. For utilities, aggregated EV batteries provide dispatchable, flexible capacity that can be called upon during peak demand — potentially delivering gigawatts of power without building new generation facilities.
For Enphase, the charger extends the company's platform into vehicle-to-everything capabilities. For NXP, the collaboration showcases system-level expertise in secure edge computing, bringing automotive-grade performance and reliability to the power and energy sector.
At scale, this technology can deliver grid-level flexible capacity in months — a fraction of the time needed to build traditional power infrastructure.
“Bidirectional charging is complex. You’re orchestrating communication between the vehicle, the charger, the home and the cloud — and you need the right processing power and the right levels of security to make that work safely at scale. By developing a full system solution together, we were able to accelerate time to market while building a platform that utilities can trust.”
What’s Next: Building the Grid of Tomorrow
The IQ Bidirectional EV Charger is just the beginning. Enphase and NXP are continuing to explore collaborations around the next generation of grid-interactive systems, from future energy gateways to advanced battery management. The goal: extend this secure, intelligent control foundation across the entire distributed energy ecosystem.
The grid is changing. The future of energy is flexible. And it's being built together.
About Enphase Energy
Enphase Energy, a global energy technology company based in Fremont, CA, is a leading supplier of microinverter-based solar and battery systems, EV chargers, home energy management systems and virtual power plant (VPP) solutions. Enphase products enable people to harness the sun to make, use, save and sell their own power, all controlled through the Enphase App. The company revolutionized the solar industry with its microinverter-based technology and has shipped approximately 84.8 million microinverters, with more than 5.0 million Enphase-based systems deployed in over 160 countries.
Learn more about EnphaseAuthor
Alex Dopplinger
Alexandra Dopplinger, P.Eng., is the Senior Director, Power and Energy + Data Center, with more than 25 years of experience in the semiconductor industry, 10 years in telecom, and a patent for a redundant network solution. Her B.Eng. Electrical Engineering, from Memorial University of Newfoundland (Canada), has led to roles ranging from hardware and system design, product management and marketing. Today, she leverages her extensive knowledge of industrial automation and control technology to grow NXP's industrial business.