The following State Enterprises fall under the portfolio of Ministry of Energy and Energy Industries (MEEI):

Wholly Owned Enterprises

• Lake Asphalt of Trinidad and Tobago (1978) Limited
• National Gas Company of Trinidad and Tobago Limited
• National Quarries Company Limited
• Trinidad Petroleum Holdings Limited
• Trinidad and Tobago National Petroleum Marketing Company Limited
• Union Estate Electricity Generation Company Limited

Majority Owned Enterprises

• Alutrint Limited
• Powergen
• Trinidad Nitrogen Company Limited

Minority Owned Enterprises

• Atlantic LNG Company of Trinidad and Tobago Limited
• Alutech Limited
• Eastern Caribbean Gas Pipeline Company Limited
• Trinidad and Tobago Marine Petroleum Company Limited

Indirectly Owned Enterprises

• La Brea Industrial Development Corporation Limited
• National Energy Corporation of Trinidad and Tobago
• National Enterprises Limited
• NATPET Investment Company Limited
• NGC E&P Investments Limited
• NGC E&P Investments (Barbados) Limited
• NGC CNG Company Limited
• NGC NGL Company Limited
• NGC Petrochemicals Limited
• NGC Pipeline Company Limited
• NGC Trinidad and Tobago LNG Limited
• Phoenix Park Gas Processors Limited
• Trinidad and Tobago LNG Limited
• Trinidad and Tobago NGL Limited
• TRINMAR Limited
• TRINTOC Services
• Trinidad Generation Unlimited