The Darling Downs Pipeline (DDP), also known as the Darling Downs Gas Pipelines, consists of three interconnected gas transmission pipeline licenses in the Darling Downs region in South-East Queensland.

The DDP has a total combined length of 292km (or 293.15km including laterals). It transports gas from the Bowen-Surat basin to the Wallumbilla gas hub, Origin’s 630MW Darling Downs Power Station, and to APLNG’s export pipeline.

The DDP is owned and operated by Jemena (Jemena Darling Downs Pipeline (1) Pty Ltd ABN 52 072 109 865, Jemena Darling Downs Pipeline (2) Pty Ltd ABN 93 125 873 869 and Jemena Darling Downs Pipeline (3) Pty Ltd ABN 83 127 059 152). 

The DDP was constructed in 2009 and was initially owned and operated by Origin Energy. Jemena acquired the pipelines from Origin in 2017.

The DDP laterals:

• Spring Gully to Wallumbilla (PPL90): Length 87 km, Nominal Diameter 323.3 mm (April 2005)
• Talinga to Darling Downs (PPL133): Length 68.69 km, Nominal Diameter 457 mm (April 2009)
• Wallumbilla to Talinga (PPL134): Length 135.8 km, Nominal Diameter 457 mm (April 2009)

The DDP is currently a non-scheme pipeline.