The recycled pet bottle glycols market is projected to grow from USD 2.4 billion in 2026 to USD 5.5 billion by 2036, at a CAGR of 8.6%. Recycled PET Glycol (rPET Glycol) will dominate with a 52.4% market share, while polyester fiber production will lead the end‑use industry segment with a 41.8% share.