Meta has signed a multi-year agreement to purchase environmental attribute certificates (EACs) generated from plastic recycling by MacroCycle Technologies, giving the Cambridge, Massachusetts cleantech startup the long-term demand signal it needs to finance construction of its first U.S. PET recycling and production plant.

The plant, to be built in the Southeastern U.S., carries a nameplate capacity of 5,000 tonnes of recycled PET per year. It remains an announced project; the agreement supplies the demand foundation for financing rather than completed construction. MacroCycle, launched in 2023 by CEO Stwart Peña Feliz and CTO Jan-Georg Rosenboom, will generate third-party verified EACs by producing rPET from waste streams that conventional mechanical recycling cannot process.

For Meta, the deal extends a supply-chain decarbonization playbook the company has already run on cement and steel. Devon Lake, Head of Net Zero Strategy at Meta, framed the transaction as an early-procurement bet on an immature market.

"Reaching net zero means advancing lower-carbon solutions across our supply chain and in the materials we use," Lake said. "We have been working to address emissions across our supply chain on materials like cement and steel, and our early procurement of materials from these sectors helped pave the way for the maturing markets we see now. We hope this transaction with MacroCycle will have a similar outcome in the plastics market."

The material stream at issue is PET — the lightweight polymer used in packaging and textiles — recovered from mixed and contaminated plastic waste. MacroCycle's proprietary process, branded SolvoGenesis, dissolves and purifies PET while keeping the polymer chain intact, returning landfill-bound waste to virgin-grade material suitable for new products.

The company claims the process requires 80% less energy than fossil-based PET production and 50–75% lower capital expenditure than competing chemical or biological recycling routes. Those figures position SolvoGenesis between two incumbent approaches, each with structural weaknesses.

"Most recycling forces a trade-off: mechanical processes are cheap but degrade the material with every cycle and struggle with complex waste streams," Peña Feliz said. "Chemical processes that break PET all the way down to its monomers are energy-hungry and expensive. SolvoGenesis sidesteps the tradeoff. We dissolve and purify PET while keeping the polymer chain intact, which is why we can take the mixed, blended, and contaminated waste that other processes reject and still come out with virgin-quality material at a fraction of the energy."

The chemistry matters commercially because depolymerization plants — the dominant chemical recycling model for PET — carry heavy energy loads and capital costs that depend on large-scale feedstock agreements to clear. A dissolution-and-purification route that avoids breaking the polymer chain shifts the economics toward smaller, faster-to-build units. The 5,000-tonne scale of MacroCycle's first plant reflects that logic.

The transaction structure also marks a departure from how recycled-plastic output typically reaches market. Rather than selling tonnes of rPET alone, MacroCycle will monetize verified environmental attributes attached to production, with Meta absorbing them against Scope 3 emissions from plastics in its supply chain. The companies said EACs of this kind can support demand for lower-carbon materials and help finance early-stage manufacturing capacity.

The mechanism echoes the power sector's renewable energy certificate market, where long-term attribute purchases from tech buyers underwrote new generation before the underlying commodity market matured. Meta is explicitly attempting to replicate that pattern in plastics, a sector where low-carbon procurement signals remain scarce.

What to watch now: financing close and construction start for the Southeastern U.S. plant, the verification standard applied to the EACs, and whether other large corporate buyers follow Meta into plastic attribute markets. The milestone that decides the project's fate is the first tonne of verified rPET and its attached certificates reaching the market — and the price the next buyer pays for them.