Yorkshire Water is conducting preliminary market engagement in relation to CM3576, covering specialist high-voltage (HV) electrical design, fault and protection studies, design and build, maintenance and inspection, together with air circuit breaker (ACB) replacement and maintenance services. For this engagement, the potential scope is presented across five lots: - Lot 1: HV design and build works - Lot 2: HV fault and protection studies - Lot 3: HV maintenance and inspection - Lot 4: ACB replacement and associated works - Lot 5: ACB maintenance and inspection Suppliers with relevant capability and experience in one or more lots are invited to express an interest in participating in a potential future tender. Interested suppliers will be asked to identify the lot(s) they could deliver and provide brief details of their relevant experience, accreditations, technical capability and geographic coverage. This notice is for market engagement only. It is voluntary and non-binding, does not constitute a call for competition, and does not commit Yorkshire Water to procure or award a contract.