Guyana Approves Exxon’s US$12.5B Gas Project
Guyana approved ExxonMobil's Longtail gas project, a $12.5B investment targeting 2030 startup. The project, operated by ExxonMobil with Hess and CNOOC, will produce gas and condensate, adding to Guyana's oil output. ExxonMobil's final investment decision was made on 12 November 2026, according to the Ministry of Natural Resources.
How this was made

The 30-second read
Why it matters
The approval signals a new growth avenue for Exxon and highlights Guyana’s shift toward gas production, potentially influencing regional energy dynamics.
Market read
The announcement introduces a sizable, long‑term upstream investment that could affect Exxon’s valuation and broader gas market expectations.
What to watch
Uncertainty around the onshore pipeline and gas off‑take agreements may affect the project's ultimate profitability.
Background
Guyana approved ExxonMobil’s Longtail field development, marking the country’s first non‑associated gas project with a $12.5 B investment.
Ticker impact
ExxonMobil received Guyana's approval for the $12.5 B Longtail gas project and announced its final investment decision.
modest upside as the market prices in the new gas development and future cash flow
A $12.5 B capital commitment and a 2030 start‑up timeline represent a material expansion of Exxon’s upstream portfolio, which should be viewed favorably by investors.
Market effects
Adds to global natural‑gas supply outlook and may influence gas‑related equities and commodity pricing.
Strengthens Guyana’s position as an emerging gas exporter in the Caribbean region.
Potentially impacts long‑term gas demand forecasts and energy transition narratives.
Counterpoint
The project's long lead‑time and execution risk could delay benefits, limiting near‑term stock impact.
Key entities
- CompanyExxonMobil
U.S. integrated oil and gas major leading the Longtail project.
- GovernmentGuyana Ministry of Natural Resources
Approved the field development plan and issued the production licence.





