In January 2003, CANDU Owners Group (COG) declared KAPS as the best performing pressurised heavy water reactor.

[1] KAPS-2 was shut down after a coolant channel leak in July 2015 and a similar issue forced the shutdown of KAPS-1 in March 2016.

The first concrete for Kakrapar 3 and 4 was in November 2010 and March 2011 respectively with operation originally expected by early and late 2018 respectively.

[3][4] The project over-ran largely due to tuning of the IPHWR-700 design and slow delivery of supplies.

The Initial Fuel Loading (IFL) commenced on 20 October 2023 after permission was granted by the Atomic Energy Regulatory Board.