Abengoa has inked a contract with Navantia to supply its AIP system to the future S80 Plus submarines of the Spanish Navy. Abengoa’s solution was selected in Feb. 2020 by the General Directorate of Armament and Material of the Spanish MoD. The Spanish company stated that its AIP system will allow the S80 Plus to operate for up to 3 weeks without surfacing.

India's fuel cell-based Air Independent Propulsion (AIP) system has crossed several milestones in technology maturity, the Defence Research and Development Organisation (DRDO) has announced.

On September 28, INS Khanderi was commissioned by the Indian Navy in Mumbai, where the submarine is based.