Power100 (callsign 4RGR) is a commercial Australian station based in Townsville, Queensland, owned by ARN.

Power100 was established as Sea FM in 1999 by RG Capital, headed by Reg Grundy.

In 2013, Prime Media Group sold its radio division to Grant Broadcasters.

In November 2021, Power100, along with other stations owned by Grant Broadcasters, were acquired by the Australian Radio Network.

This deal allows Grant's stations, including Power100, to access ARN's iHeartRadio platform in regional areas.