Pipeline and Digging Safety

The Kahe and Waiau Pipelines

Since 1962, Hawaiian Electric has safely, reliably, and efficiently operated our pipelines to transport low sulfur fuel oil (LSFO) to the Kahe and Waiau Power Plants. These power plants provide energy security to government, businesses and residents. The Kahe and Waiau pipelines both travel underground originating from Kalaeloa. The Kahe pipeline travels through Ko Olina to the Kahe Power Plant and the Waiau pipeline travels through Kapolei, Waipahu, and Pearl City to the Waiau Power Plant. Hawaiian Electric diligently maintains the pipelines to ensure the safety and well-being of the community and residents.

For more information, download the Hawaiian Electric Pipeline Brochure (pdf).

Digging Safety - Before You Dig

Hawaii One Call Center
Phone: 1 (866) 423-7287
To safeguard pipelines, anyone planning to dig near or around the Iwilei Pipeline such as contractors or excavators should call the Hawaii One Call Center at least five working days prior to digging. The call center operates 24/7 and will alert Hawaiian Electric so we can properly mark or indicate the underground pipeline path, provide information about the route or give clearance to dig.

811, "Call Before You Dig"
The national 811 number is available from anywhere around the country, and one phone call connects you to your local One Call Center. You will be asked for the location of your digging job and your call will be routed to affected utility companies who will then send out a professional to mark the lines. Calling 811 before every digging job gets your underground utility lines marked for free and helps prevent undesired consequences.

Common Ground Alliance
Phone: (703) 836-1709
Preventing damages to underground infrastructures is the main purpose of the Common Ground Alliance, a member-driven association that is dedicated to public safety, environmental protection and integrity of services through promotion of effective damage prevention practices. Learn about best practices for damage prevention and protection of underground facilities.