Tower Semiconductor Expands $3 Billion Production Capacity in Japan, Raises 2028 Forecast

Tower Semiconductor, an Israeli chip manufacturer based in Migdal Haemek, announced a significant expansion of its production capacity in Japan with a $3 billion investment supported by the Japanese government. The expansion involves two parallel tracks to increase 300mm wafer production capabilities in silicon photonics, silicon germanium, and advanced optical packaging. The investment includes nearly $1 billion in government grants, with the company financing the remainder through existing cash reserves and operational cash flow.

The expansion aims to meet growing long-term demand from Tower's customers and significantly boost production capacity. The first track involves converting the former Arai fab (Fab 6) into a silicon photonics production facility with advanced packaging capabilities, expected to be fully operational by Q4 2027. The second track plans to build a new 300mm fab near Fab 7 in Uozu, Japan, pending final agreements, to further increase production of silicon photonics and silicon germanium technologies.

Tower has been capitalizing on the photonics trend for over a year, shifting from copper-based server infrastructure to optical technologies to handle increasing data transfer speeds driven by AI. The company already holds signed contracts exceeding $1 billion for 2027, nearly matching its projected 2025 revenues. Following the first expansion track, Tower sharply raised its 2028 sales forecast to $3.6 billion and net profit to $1.2 billion, up from previous targets of $2.8 billion in sales and $750 million net profit.

As of Q1 2026, Tower held $1.5 billion in cash and generated positive cash flow exceeding $200 million per quarter, supported by customer prepayments securing production slots. CEO Russell Alwanger expressed pride in Japan selecting Tower to lead this strategic technology expansion, highlighting the combination of Tower's technology with Japan's manufacturing excellence and skilled workforce. He emphasized that the first expansion track underpins the updated 2028 business model, while the second track will rapidly and efficiently add production capacity to existing profitable operations compared to longer lead times for new fabs or product transfers.

This expansion marks a major step up from Tower's previous investments of nearly $1 billion in new production lines, mostly in Israel, positioning the company for long-term leadership in semiconductor innovation and growth.