The U.S. Department of Energy has selected New Haven-based Protein Evolution to receive several million dollars in federal funding to develop technology that converts PET textile waste into new polyester through an enzymatic process. The grant is part of a package covering dozens of projects with total funding in the hundreds of millions of dollars, positioned around "cost-competitive domestic manufacturing" and treating textile recycling as an industrial manufacturing opportunity.

Protein Evolution's approach is "textile-to-textile" recycling, which is fundamentally different from the much larger recycled polyester industry route that uses PET bottles as feedstock. Polyester accounts for more than half of global fiber production, while textile-to-textile recycling accounts for only a small share of recycled polyester supply.

However, this federal funding is not enough to support a commercial-scale plant. Public funding programs themselves are also uncertain: in May 2025, the U.S. Department of Energy terminated up to hundreds of millions of dollars in funding planned for Eastman's molecular recycling plant in Texas; the company had previously received partial payments in 2024 and 2025 for eligible pre-termination costs. Industry views hold that public funding can move technology forward, but commercial viability ultimately depends on three conditions: demand, financing, and scale.

On the other side of the Atlantic, regulatory pressure is creating demand-side momentum for recycled polyester. EU regulations require producers to fulfill producer responsibility by April 2026, while California's SB bill requires producers to join approved organizations by July 2028. These policies are raising the threshold of obligations for brands and producers to use recycled materials.

For the used clothing trade and textile recycling industry, this development means two things: on one hand, policy-driven demand for recycled polyester is being institutionally locked in, providing potential market space for high-cost processes such as textile-to-textile recycling; on the other hand, whether the technology route can truly be commercialized still depends on the continuity of public funding and whether end demand can translate into stable orders—the U.S. Department of Energy's repeated shifts in attitude toward related projects in recent years also suggest that the capital and policy environment for this industrial chain is not stable.

Source: Can EU and California rules accelerate recycled polyester supply? · Originally published 2026-09-15