Enphase Energy Introduces Domestic Manufacturing of IQ Battery 5P Solution

Enphase Energy, Inc. (NASDAQ: ENPH), a leading global energy technology company and supplier of microinverter-based solar and battery systems, has announced the initial shipments of IQ® Battery 5Ps produced in the United States. These products can help projects qualify for the Domestic Content Bonus Credit, a tax incentive designed to promote manufacturing and clean energy initiatives under the Inflation Reduction Act (IRA).

At Sun Supply PV, we stock Enphase IQ Battery 5P units — including domestically manufactured SKUs — to help our installer partners qualify for domestic content incentives. Batteries and inverters ship free.

What Is the Domestic Content Bonus Credit?

The Domestic Content Bonus Credit is available to commercial asset owners, including businesses adding solar systems and providers of solar power purchase agreements (PPAs) or leases for residential projects. To qualify, a project must meet a minimum threshold of U.S.-manufactured components as a percentage of total equipment cost.

The credit works as an add-on to the base Investment Tax Credit (ITC) under Section 48. Projects that meet the domestic content requirements can receive an additional percentage point bonus on top of the base ITC rate. The domestic content percentage requirement increases over time, meaning early adoption is advantageous.

For residential homeowners claiming the Section 25D Residential Clean Energy Tax Credit, the Domestic Content Bonus does not directly apply. However, commercial asset owners — including PPA and lease providers serving residential customers — can benefit. Consult with your tax advisor to determine eligibility for your specific project structure.

How Enphase Domestic Manufacturing Works

Enphase has contracted with U.S.-based manufacturing partners to produce IQ Battery 5P units domestically. These products are labeled with SKUs bearing a “DOM” suffix, signifying their production with domestic components. By purchasing DOM-suffix products, commercial asset owners can count those components toward the domestic content threshold.

Key details about the DOM SKUs:

• IQ Battery 5P with “DOM” suffix: U.S.-manufactured battery units that contribute to domestic content calculations
• IQ8HC Microinverters with “DOM” suffix: Higher domestic content compared to earlier models, also manufactured in the U.S.
• Both products maintain the same technical specifications and warranty coverage as their non-DOM counterparts
• DOM-suffix products may have different lead times — contact us for current availability

Why Domestic Content Matters for Solar Projects in 2026

The Inflation Reduction Act has reshaped the solar supply chain by incentivizing U.S. manufacturing. For commercial asset owners and PPA providers, the Domestic Content Bonus Credit can meaningfully improve project economics:

• Higher ITC: The bonus adds percentage points to the base Investment Tax Credit, directly reducing tax liability
• Competitive advantage: PPA and lease providers can offer more attractive rates to residential customers when their projects qualify
• Supply chain resilience: U.S.-manufactured components reduce exposure to international shipping delays and tariff changes
• Future-proofing: As domestic content requirements increase over time, sourcing DOM products now positions your business ahead of the curve

Qualifying for the Domestic Content Bonus Credit

To qualify, commercial projects must meet specific requirements:

1. Use qualifying domestic components: A percentage of total manufactured products (by cost) must be produced in the U.S. The threshold increases annually.
2. Proper documentation: Maintain records of component origins, including DOM-suffix SKUs and manufacturer certifications.
3. Commercial ownership structure: The bonus applies to Section 48 ITC claims by commercial asset owners, not Section 25D residential claims.
4. Consult tax professionals: Eligibility depends on project-specific factors. Always work with a qualified tax advisor to confirm qualification.

How to Source DOM-Suffix Enphase Products

As an authorized Enphase distributor, Sun Supply PV can provide:

• IQ Battery 5P units with DOM suffix
• IQ8HC Microinverters with DOM suffix
• Documentation supporting domestic content calculations
• Lead time information for DOM-suffix products

When ordering, specify that you need DOM-suffix SKUs. Non-DOM and DOM products may have different lead times and pricing. Contact us for current availability and quotes.

Combining Domestic Content with Other Incentives

The Domestic Content Bonus Credit can stack with other IRA incentives for qualifying commercial projects:

• Energy Community Bonus: Additional credit for projects in designated energy communities (former coal-mining or industrial areas)
• Low-Income Bonus: Additional credit for projects serving low-income households or located in low-income areas
• State and local incentives: Many states offer additional rebates or tax credits that stack with federal incentives

Stacking these incentives can significantly improve project ROI for commercial asset owners. Work with your tax advisor and legal counsel to maximize available credits.

Enphase’s Commitment to U.S. Manufacturing

Enphase is recognized for its commitment to delivering reliable solar products, and the introduction of domestically manufactured IQ Battery 5P and IQ8HC Microinverters signifies an expansion of that product line within the U.S. This development reflects a growing emphasis on supporting local innovation and quality assurance in renewable energy solutions.

Both the IQ Battery 5Ps and IQ8HC Microinverters with DOM suffix maintain the same technical specifications, warranty coverage, and performance as their non-DOM counterparts. The only difference is the manufacturing location.

Contact Sun Supply PV

Sun Supply PV encourages anyone interested in the Domestic Content Bonus Tax Credit to consult with their legal and tax advisors to determine their eligibility. For more information regarding the Enphase IQ Battery 5P (DOM), IQ8HC Microinverters (DOM), or any solar products, please contact Sun Supply PV. Batteries and inverters ship free.

Contact Sun Supply PV for Pricing and Availability