Vietnam's Boviet Solar Expands US Manufacturing to 3GW Amid Rising Domestic Demand

Boviet Solar, a Vietnamese solar manufacturer, has added 1GW of manufacturing capacity to its module manufacturing plant in North Carolina. This brings its total annual manufacturing capacity to 3GW.

In April of 2025, the company kick-started work at the Greenville PV Module Factory (Phase I). The factory produces Gamma series of monofacial modules and Vega series of bifacial modules. Both the products are based on passivated emitter rear contact (PERC) technology. 

The factory is now equipped with three module production lines. This, the company insists, will contribute toward meeting “the growing demand for domestically produced solar products”.

“The addition of a third production line marks another important milestone in our Greenville journey,” said Marco Marquez, the General Manager of the Greenville factory. “It further enhances our ability to serve our customers with reliable, US-made PV modules while creating high-quality local jobs.”

$400 Million Investment

Boviet Solar has sought to expand cell manufacturing capacity in tandem with its module manufacturing capacity, and in August completed exterior construction work on a cell manufacturing facility at the Greenville site. The cell facility is expected to begin commercial operation in the second half of 2026, and the factory’s cell and module components represent a USD 400 million investment.

Along with Boviet Solar, ES Foundry has made significant progress in establishing its cell manufacturing facility in the US, beginning production at its South Carolina plant in February. The company is prioritising PERC cell technology, which CEO Alex Zhu recently described as more “proven and reliable” than tunnel oxide passivated contact (TOPCon) cells. Although TOPCon cells boast higher efficiency, they have been entangled in several patent disputes between manufacturers throughout this year.

Soaring American Solar Popularity

US-made solar products have been in demand this year, and especially after the country passed One Big Beautiful Bill Act, the demand increased considerably. 

As a result, the solar manufacturing industry has experienced growth in module production capacity, exemplified by the US adding 8.7 GW of new module capacity in the first nine months of the year. However, cell manufacturing capacity has expanded at a slower pace, with only 2 GW of new capacity added during 2024 and 2025.