Prospex Energy PLC announced that the development of the photovoltaic hybridisation solar project at the El Romeral power plant, known as "Project Helios", which would increase output from the plant by up to 60%, is progressing well ahead of the final investment decision, which is scheduled for consideration in June 2023. The El Romeral power plant is operated by Tarba Energia S.L. ("Tarba"), which is based near Carmona east of Seville in the province of Andalusia, Spain. The power plant is co-owned through Tarba by Prospex which has a 49.9% working interest and Warrego Energy Limited which has a 50.1% working interest.

Warrego Energy is now wholly owned by Hancock Energy (PB) Pty Ltd. in Perth Western Australia. Hancock Energy is an active and supportive joint venture owner in Tarba. The plot of 20 hectares adjacent to the power plant has been leased for an initial period of 2 years with a start date of 1 January 2023.

The first two years are at the reduced rate of EUR800 per hectare per year with a break clause should full permitting or FID not proceed in that timeframe. The new project is a pioneer in the hybridisation of technologies, using the resources and income from electricity generation from conventional natural gas production to re-invest in renewable energy generation from a photovoltaic plant. The hybridisation will use the existing connection to the electricity grid and is expected to provide sufficient energy to supply more than 20,000 homes.

The El Romeral power Plant was recently declared a public utility by resolution of the Junta de Andalucia. This declaration comes with no further liabilities and is testament to the good relations that Tarba has built up with the local authorities and the community of Carmona. This recognition has been welcomed by Tarba and consolidates Tarba's long-term commitment to the population of Carmona as a stable supplier of electricity to the region.