LISBON, Dec 19 (Reuters) - Portugal's Galp Energia anticipates to start producing biodiesel and biojet fuel from waste in an industrial-scale unit it is at its Sines refinery in 2026, the company, which is mainly an oil manufacturer and refiner, stated on Thursday.

In 2015 Galp participated in a 75%-25% joint venture with Japan's Mitsui to invest 400 million euros ($415 million) in the Hydrogenated Vegetable Oil (HVO) plant, which will have a production capacity of 270,000 metric heaps each year.

It will transform waste products, such as used cooking oils, into sustainable biodiesel and biojet fuel, also understood as sustainable aviation fuel (SAF), utilizing green hydrogen produced by an electrolyser powered by wind or solar power.

Galp stated in a statement it received on Wednesday the 3 reactors to process biofuels, which will allow the HVO system to "produce SAF and biodiesel in 2026 ... placing Galp at the forefront of establishing low-carbon solutions essential for the energy transition".

Galp is likewise investing 250 million euros in a 100 megawatt (MW) electrolyser system to produce green hydrogen to power the refinery in Sines. ($1 = 0.9637 euros) (Reporting by Sergio Goncalves;-RRB-