G.I.S. is a privately held company established in 1948 in Grand Isle, Louisiana, specializing in the oil and gas, power, renewables, and critical infrastructure sectors. With nearly 3,000 employees, 21 strategically located facilities, and 20 service lines, G.I.S. provides comprehensive solutions from project development through decommissioning. The company aligns its services with operations from the development stage of major projects, through construction, commissioning, and ultimately decommissioning.
G.I.S. has a long history of serving the commercial fishing industry before expanding into the Oil & Gas Industry in the Gulf of Mexico. Today, it operates nationally and internationally, offering a full range of services to meet the needs of its diverse clientele.
The company's extensive experience and broad service offerings make it a reliable partner for complex projects across various industries.
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| Ownership Private Company |
| Revenue $450.4M |
B2B professionals should contact G.I.S. for its extensive expertise and comprehensive service offerings in the oil and gas, power, and renewables sectors. G.I.S. provides a full range of solutions that can support large-scale projects from development through decommissioning, making it an ideal partner for complex infrastructure needs.
Sales teams selling services in the oil and gas, power, and renewables sectors should reach out to G.I.S. Recruiters seeking experienced professionals in these industries and partners offering specialized infrastructure services should also consider G.I.S.
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Last verified: February 2, 2026
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