ENPH · CIK 1463101
What Enphase Energy, Inc. told the SEC could break it.
Most of what Enphase flagged converges on a single tension: its energy-storage batteries depend on lithium iron phosphate cells supplied exclusively by two vendors in China, even as the IRA tax credits it leans on — $238.7M recognized in 2025 — increasingly require non-China content and domestic cost thresholds its products may not meet, and tariffs on those same China-sourced cells were a primary driver of a 12% rise in cost of revenue. Layered on top is a sharp revenue concentration, with one customer accounting for about 39% of net revenues. It also concentrates its workforce in India, where roughly 61% of employees handle R&D, procurement, and support.
5 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Regulatory & policy
- IRA AMPTC tax credits / FEOC & domestic-content requirementshigh
Enphase recognized $238.7M of IRA AMPTC tax credits in 2025; escalating non-FEOC content and domestic cost-threshold requirements (45% after June 16, 2025) could disqualify products from the AMPTC if it cannot meet them — a direct conflict with its China-concentrated LFP sourcing.
“If we are unable to meet these domestic content or non-FEOC compliance thresholds, our products may not qualify for applicable tax credits, including the AMPTC, which could reduce the attractiveness of our offerings to installers, developers and customers.”
- import tariffs (realized cost-of-revenue impact)medium
Higher tariffs were a primary driver of Enphase's 12% cost-of-revenue increase in 2025; critical components (notably China-sourced LFP cells) remain exposed to escalating trade tensions and broader tariffs.
“This increase was primarily driven by increased MWh of IQ Batteries shipped, higher tariffs and indirect manufacturing costs.”
Customer concentration
- one customer (~39% of net revenues)high
A single unnamed customer accounted for approximately 39% of net revenues in 2025 (48% in 2024, 40% in 2023); accounts receivable also concentrated, with three customers at 31%, 22% and 14% of the AR balance.
“In the years ended December 31, 2025, 2024 and 2023, one customer accounted for approximately 39%, 48% and 40%, respectively, of our net revenues.”
SEC filing →As of 2026
Supplier concentration
- LFP battery cells — exclusively two vendors in Chinahigh
Lithium iron phosphate (LFP) battery cells for Enphase's energy storage systems are supplied exclusively by two vendors located in China; the global LFP supply chain is heavily concentrated in China and qualifying alternative suppliers remains challenging.
“For example, lithium iron phosphate ("LFP") battery cells used in our energy storage systems are still supplied exclusively by two vendors located in China.”
SEC filing →As of 2026
Geographic concentration
- India workforce (61% of employees)medium
As of Dec 31, 2025, ~61% of total employees were located in India, where Enphase concentrates R&D, procurement, customer support and G&A support functions.
“As of December 31, 2025, approximately 61% of our total employees were located in India, where we primarily conduct our research and development activities, procurement, customer support services, and other general and administrative support functions.”
In the MyPRIA app, this is checked against the companies you actually own.
← World Watch