Why Refiners Are Betting Beyond Fuel

Refiners accelerate petrochemical integration to offset declining fuel demand, even as 40M-ton ethylene overcapacity delays margin recovery

25 Jun 2026

Major refiners are reshaping capital strategies around petrochemicals as electric vehicles steadily erode long-term fuel demand. The shift is gathering pace. Analysts at Deloitte, Mordor Intelligence and Wood Mackenzie say feedstock optimisation and deeper refinery-chemical integration now dominate investment plans, redirecting capital from the US Gulf Coast to the Persian Gulf.

Between 2026 and 2031, petrochemicals are expected to expand at a compound annual growth rate of 4.25%, while global fuel demand remains broadly flat. The widening gap is pushing investment toward catalytic crackers, polymer units and circular feedstock systems that can cushion revenues against weaker fuel markets. ExxonMobil and Chevron Phillips have both expanded chemical integration projects aimed at higher-margin production.

Profitability, however, remains constrained by persistent oversupply. Global ethylene capacity exceeds demand by more than 40 million tonnes, with roughly 70% of the surplus created by Chinese capacity additions between 2020 and 2025. Wood Mackenzie expects meaningful margin recovery only in the early 2030s, extending pressure on project returns and investor confidence.

Against that backdrop, Shell is diversifying feedstocks through recycled and waste-derived inputs. The strategy reduces exposure to commodity price swings while helping meet stricter environmental rules across Europe and Asia-Pacific. Greater efficiency from cracker to polymer production has also become increasingly important as producers compete in a saturated market.

Outside the refining sector, the shift carries wider implications for packaging, automotive and construction industries that depend on petrochemical supply. Price volatility is likely to persist through the remainder of the decade, but analysts expect refinery-chemical integration and circular feedstocks to become standard features of the industry's next phase as excess capacity is gradually absorbed.