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

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

It will change waste materials, such as used cooking oils, into renewable biodiesel and biojet fuel, likewise called sustainable air travel fuel (SAF), using green hydrogen produced by an electrolyser powered by wind or solar power.

Galp stated in a declaration it got on Wednesday the three reactors to process biofuels, which will enable the HVO system to "produce SAF and biodiesel in 2026 ... putting Galp at the leading edge of establishing low-carbon services essential for the energy shift".

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