Big Sky Electric
Big Sky Electric delivered a critical design-build upgrade at the RP-1 Wastewater Treatment Plant, a 30 MGD, 24/7 facility with no bypass capability, demonstrating precision planning, innovation and round-the-clock execution. Over 24 months of collaboration with IEUA Operations & Maintenance, the team replaced aging 15kV switchgear and medium-voltage feeders, upgraded three 1,250 kW generators with modern EMCP 4.3 controls and installed new generator paralleling switchgear.
To keep the plant fully operational, Big Sky Electric engineered and executed a complex temporary power strategy, deploying 11 generators totaling 13 MW. Plant loads were seamlessly transferred to generator power, allowing crews to disconnect RP-1 from the utility grid and complete the work during a 54-hour window, without interrupting service. The project stands as a testament to Big Sky Electric’s commitment to reliability, safety and service in the most demanding environments.