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Senior Engineer Interconnections & Grid Analysis

Invenergy · Chicago, IL · $140,000–$165,000 a year · Full time

Posted Aug 26, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a time your analysis changed a business decision on a project.

What they are checking: Whether their technical work has influenced real commercial outcomes, not just filled a report.

Describe a time you had to learn a new market rule or tariff change quickly. How did you approach it?

What they are checking: Whether they can keep up with constant rule changes, like FERC order updates, that reshape interconnection.

What would you do

An interconnection study comes back with large network upgrade costs. How do you help the team decide what to do?

What they are checking: Whether they can test the study's assumptions and frame options like resizing, withdrawing or sharing costs.

A developer asks you why their project went from cheap to expensive between two study phases. How do you explain it?

What they are checking: Whether they can explain queue changes and study results clearly to people who are not engineers.

About the work

Walk me through how you would run a power flow analysis for a new generation project seeking interconnection.

What they are checking: Whether they know how to set up cases, apply contingencies and interpret thermal and voltage violations.

How do interconnection rules differ between two ISOs or RTOs you have worked with?

What they are checking: Whether they understand that market rules shape study timelines, costs and project risk differently in each region.

What tools, such as PSS/E, PowerWorld or TARA, have you used, and what do you use each one for?

What they are checking: Whether they have hands-on experience with the software that interconnection analysis actually depends on.

How would you screen many possible points of interconnection quickly to find the best ones for development?

What they are checking: Whether they can balance speed and accuracy when developers need early answers before full studies.

How do you check your own model and results before they go to the business team?

What they are checking: Whether they have a habit of validating inputs and results, since bad studies lead to costly decisions.

How does adding battery storage to a solar site change the interconnection analysis?

What they are checking: Whether they understand charging, dispatch and hybrid configurations that affect grid impacts and study scope.

Practice this interview out loud.

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The full job description

As published by Invenergy.

Invenergy is North America’s largest privately held developer, owner, and operator of power infrastructure. With 25 years of trusted execution, we deliver reliable, affordable energy through a diverse portfolio that includes natural gas, solar, land-based wind, energy storage, transmission, and domestic manufacturing. Headquartered in Chicago, we develop, own, and operate large scale projects that power communities and support the energy future. This position will be open for application for at least 3 calendar days from the posting date. This position will remain open for application based on business need, which may be before or after the 3-day posting window. Job Description Position Overview The Senior Engineer, Interconnections and Grid Analysis will perform technical analysis to assist in the interconnection process for the different generation projects. Based out of Invenergy’s Chicago office, the Engineer, Interconnections and Grid Analysis will also be responsible for assisting in other transmission associated activities and analysis, including interpreting the different market rules as they apply to the interconnection process. Invenergy follows a hybrid schedule, working in office Monday through Thursday and remotely on Fridays. Responsibilities • Perform power flow analysis and market related evaluations as part of generation and transmission development activities. • Provide grid, transmission system planning and congestion evaluation, to assist in development activities mainly in PJM, NYISO, and ISONE • Review utility and RTO/ISO transmission expansion plans to identify potential opportunities. • Review utility interconnection studies (feasibility, impact, stability and facility). • Identify areas for new transmission projects based on generation technological shifts and the corresponding impacts it has on grid behavior. • Utilize regulatory and compliance knowledge to identify and evaluate areas of critical impact for projects in the interconnection pipeline. • Work with regulatory team to provide input on queue reforms and process changes as necessary. • Develop conceptual design of interconnection facilities and costs. • Assist in conceptual design of wind farm and solar electrical collection systems (34.5kV), substations (34.5kV – transmission voltage 115kV – 230kV – 345kV), and project owned transmission lines. • Provide assistance during project design and construction for interconnection related issues • Interpret market rules as they apply to the interconnection study, construction, and operation of generation projects • Provide assistance to asset managers in developing and implementing bidding and risk management strategies • Participate in various industry groups dealing with interconnection and market issues. • Perform technical diligence for potential M&A projects • Perform complex Transmission delivery assessments to support Origination and business opportunities for RFPs. • Coordinate with consultants to prepare system models and perform reliability and economic studies. • Establish relationships with various technical experts among stakeholders, utilities, RTO/ISOs. Required Skills • BS or MS in Electrical Engineering with a focus on power systems • 3+ years of experience in transmission system planning, compliance and operations including complex power flow, short circuit, and stability studies. • Knowledge of FERC, NERC standards related to transmission and interconnections, including Open Access Transmission Tariff (OATT) a plus. • ISO/RTO or Utility interconnection related experience preferred. • Experience working on regional complex power system studies and system planning assessments. • Experienced in the use of power flow software such as PSS/E, GE PSLF TARA, PowerWorld or similar software package a plus. • Proficiency in spreadsheet modeling using Microsoft Excel. • Experience in using VBA for automating processes, tasks or interpreting data is a plus. #LI-Hybrid Base Pay $140,000 - $165,000 USD Annual Bonus: 20% - 30% The base pay range reflects the minimum and maximum target salary for the position. Invenergy considers a number of factors when determining base pay offers such as the scope and responsibilities of the position and the candidate's experience, education and skills. In addition to base pay, the total annual compensation package may also include eligibility to participate in our bonus program(s) which are designed to reward individual and company performance. Your recruiter can share more about bonus eligibility for this position during the hiring process. Invenergy offers a variety of other benefits including medical, dental and vision insurance, 401k, paid time off, etc. Invenergy LLC is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to, among other things, race, color, religion, sex, sexual orientation, gender identity, national origin, age, status as a protected veteran, or disability.

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