[Skip to main content](#main-content) [OpenNash Jobs](https://jobs.opennash.com/) [Hiring report](/reports/hiring/) · [All Repsol jobs](https://jobs.opennash.com/companies/repsol/) · [Search jobs](/search/) Repsol · Downtown Houston # Sr Transmission Engineer/Principal Engineer Downtown Houston Full-time Senior individual contributor Operations Listed on Repsol ’s official careers site. Posted October 8, 2026. Check that it is still open and apply there. [Apply on Repsol ’s careers site →](https://repsol.wd3.myworkdayjobs.com/Repsol/job/Downtown-Houston/Transmission---Interconnection-Manager_82976) [OpenNash Jobs](https://jobs.opennash.com/) / [Repsol ](https://jobs.opennash.com/companies/repsol/) / Sr Transmission Engineer/Principal Engineer ## Job description We explore and discover the limitless possibilities of energy so we can all progress. We believe in the power of talent to shape the future. That’s why we’re looking for curious, bold individuals who are eager to grow and create new ways forward—people who want to join us in building a more sustainable, innovative, and inclusive world. We strongly believe that diversity fuels creativity and innovation. That’s why we welcome professionals who are ready to grow, learn, and bring their perspective to the energy challenges of today and tomorrow. Here, you’ll find a place to grow and unlock your full potential. ### Company Profile Repsol is a globally integrated multi-energy company headquartered in Madrid, Spain. With a team of over 25,000 employees across more than 20 countries, we proudly serve 24 million customers worldwide. Our diversified renewable energy portfolio totals nearly 6 GW of installed capacity, with a strong presence in Spain, the United States, Italy, and Chile. As part of our commitment to a more sustainable future, low-emissions generation is at the core of our strategy to achieve net-zero emissions by 2050. Repsol Renewables North America (RRNA) plays a key role in this vision, with aims to increase generation capacity to more than 4.5 GW of renewable energy in North America by 2029. We are driven by innovation, collaboration, and purpose. Repsol offers a comprehensive Employee Value Proposition (EVP), including a holistic Total Rewards program that supports the wellbeing, growth, and contributions of our people. Join us in shaping the future of energy. ### 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 Power world as needed. Review interconnection study results, quantify risks and identify opportunities to reduce the network upgrade cost exposure during the 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 the 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. ### Technical Skills Demonstrated proficiency with TARA, PSSE, Powerworld or similar powerflow tools; PROMOD, PLEXOS, PROBE or similar production cost tools; Working knowledge of the interconnection procedures in MISO, PJM, SPP, CAISO and/or ERCOT Proficiency with Python, excel and MS Office Suite Education/ 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 (or) 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. Repsol is an Equal Opportunity Employer M/F/Disability/Veteran ## At a glance - Posted by the employer: Oct 8, 2026 - First seen by OpenNash: Jul 30, 2026 - Last checked: Oct 18, 2026 - Listed for: 80 days - Location: Downtown Houston - Employment type: Full-time[Apply on Repsol ’s careers site →](https://repsol.wd3.myworkdayjobs.com/Repsol/job/Downtown-Houston/Transmission---Interconnection-Manager_82976) ## More jobs at Repsol ### [Project Risk Control Manager](https://jobs.opennash.com/companies/repsol/jobs/c222dad4348f755abdcd/) Downtown Houston ### [Senior Electrical Engineer](https://jobs.opennash.com/companies/repsol/jobs/d4c71e3e26ef3fc71dec/) Downtown Houston ### [SR Project Manager](https://jobs.opennash.com/companies/repsol/jobs/0f82b0801fccbe2b1177/) Downtown Houston ### [Senior Control Center and SCADA Engineer](https://jobs.opennash.com/companies/repsol/jobs/1ed21fca4f1572e14df0/) Downtown Houston ### [Senior Project Engineer](https://jobs.opennash.com/companies/repsol/jobs/97efe72f7cde148c7bee/) Downtown Houston ## Similar jobs at other companies ### [Transmission Planning Engineer](https://jobs.opennash.com/companies/aes/jobs/3d8cd2dcaf9bd13f55ac/) AES · US, Dayton, OH ### [Transmission Line Design Engineer](https://jobs.opennash.com/companies/aes/jobs/0c1b40003c758be8f2ca/) AES · US, Indianapolis, IN ### [Principal Engineer – Transmission Scenario Planning - External Analysis Specialist](https://jobs.opennash.com/companies/exelon/jobs/73fee5da3ca2c1b7fa19/) Exelon · KENNETT SQUARE, Pennsylvania ### [Principal Engineer - Transmission/Substation](https://jobs.opennash.com/companies/nextera-energy/jobs/3b44ecdc9daa5692292a/) NextEra Energy · Location: Jupiter, FL, US ### [Electrical Engineer-UG Transmission Senior-Principal-Staff](https://jobs.opennash.com/companies/american-electric/jobs/2c77402bf1aa3113ff8f/) American Electric · New Albany, OH OpenNash lists jobs from employers’ own careers sites and does not handle applications. Dates come from the employer where stated; “first seen” and “last checked” are our own observations. OpenNash Jobs · Official listings with dates and links to the employer. [Weekly hiring report](/reports/hiring/) · [Methodology](/methodology/)