Transmission & Interconnection Manager

Job Summary This role focuses on power systems modeling and energy market analysis to support project development and transmission planning. The position involves performing production cost modeling and grid studies to assess congestion, curtailment, and interconnection risks, as well as developing powerflow, dynamic, and PSCAD models. Responsibilities include conducting interconnection, deliverability, and contingency analyses, reviewing study results to identify risks and cost drivers, and recommending strategies to reduce network upgrade expenses. The role also supports strategic growth by analyzing transmission capacity, reviewing regional transmission plans, and leveraging interconnection queue data and utility forecasts to identify development opportunities. The ideal candidate will have strong technical expertise in power systems and market modeling tools, the ability to automate processes using Python, and the skills to communicate complex technical findings effectively in a fast‑paced, collaborative environment. Key Responsibilities Perform PROMOD and market production cost analysis to quantify basis, curtailment and congestion risk assessment. Support the transmission and interconnection support team by creating plant specific powerflow, dynamic and PSCAD models for various regions of interest based on interconnection requirements. Perform and review generation interconnection analysis, deliverability analysis and contingency analysis using study tools such as TARA, PSSE and Powerworld as needed. Review interconnection study results, quantify risks and identify opportunities to reduce network upgrade cost exposure during interconnection queue studies. Review transmission plans for various regions and ensure that powerflow models are up to date for internal analysis to support company’s strategic growth. Conduct screening and identify transmission capacity across areas of interest for high‑quality development locations (green field development). Gather data and intelligence from interconnection queues and utility IRPs for developing scenarios. Use Python to automate modeling, processing frequently used large data sets, inputs and outputs for the various study processes. Requirements Ability to prepare high‑quality model quality reports, presentations, documentation, and market data to support project development efforts. Ability to function in a team and demonstrate a strong motivation to succeed in a very fast‑paced environment. Ability to perform detailed technical analysis, synthesize results and automate repeatable processes. Ability to communicate technical issues effectively to non‑technical audiences and higher management. Demonstrated proficiency with TARA, PSSE, Powerworld or similar powerflow tools. Demonstrated proficiency with PROMOD, PLEXOS, PROBE or similar production cost tools. Working knowledge of interconnection procedures in MISO, PJM, SPP, CAISO and/or ERCOT. Proficiency with Python, Excel and MS Office Suite. Education and Experience Must be authorized to work for any US employer, without the need for work visa sponsorship now or in the future. Bachelor’s degree or higher in electrical engineering or related quantitative discipline. Minimum 4 years of experience is required in economic modeling and/or energy market data analysis with PROMOD, PLEXOS, PROBE or UPLAN, powerflow analysis (NERC TPL assessment and/or reliability analysis), generation interconnection studies, or power system dynamic simulations with TARA, PSSE, Powerworld or PSAT/TSAT. Experience with Excel and MS Office Suite is desired. Demonstrated competency in other modeling, statistical analysis, and/or optimization software is strongly desired, but not required. Experience working with Transmission Service Providers (including ISOs/RTOs), thorough knowledge of FERC transmission tariffs, NERC standards and interconnection processes. EEO Statement Repsol is an Equal Opportunity Employer M/F/Disability/Veteran #J-18808-Ljbffr Repsol SA