At the beginning of September 2018, WTE signed the contract to expand the Tubli wastewater treatment plant in the capital of Bahrain. The capacity of the existing plant will be doubled from 200,000 m³/d to 400,000 m³/d under a general contractor contract. The contract also includes the construction of a sludge drying and incineration plant with a capacity of around 15 MW. The construction period for the entire project is 36 months. Afterwards, WTE will take over the operational management for ten years.