Senior High Voltage Engineer

Sol Systems is seeking a Senior High Voltage (HV) Engineer who will provide technical guidance during origination, interconnection, project development, pre‑construction, financial closing, construction, and commissioning for high voltage facilities (substations, transmission lines, and interconnection switchyards) that are part of PV and BESS plants.

The Sr. HV Engineer will lead the late‑stage interconnection process for utility‑scale PV and BESS projects from the facilities study phase to GIA negotiations, including negotiations with the transmission owner. The Engineer will also drive long‑term construction coordination during development and pre‑construction, guide internal stakeholders, consultants, and EPC’s toward design and construction of the high voltage facilities, and support procurement teams with technical guidance toward specification and purchase of GSU’s and HV breakers.

• Review interconnection study results and apply knowledge of RTO and TO interconnection standards to strategize development of a utility‑scale PV and BESS project.
• Manage interconnection from the Facilities Study stage through GIA negotiation and thereafter, including direct interface with the transmission owner during design and construction of interconnection facilities.
• Manage GIA schedule and scope amendments through strategic negotiations with the RTO/ISO and TO.
• Conduct material modification requests to modify equipment listed in the GIA.
• Estimate interconnection upgrade scope, cost and schedule; advise on self‑build cost‑saving potential.
• Review proposed interconnection facilities scopes, fees, and schedules, and negotiate with the transmission owner to optimize toward least cost or project‑optimal outcomes.
• Review 30/60/90/IFC HV and SCADA designs by consultants and EPC’s to ensure compliance with GIA, RTO/ISO, and TO standards, and facilitate design coordination with the RTO/ISO and TO.
• Provide procurement support for HV equipment such as GSU and HV breakers through development of specification documents and review & approval of shop drawings by vendors.
• Travel up to 10% may be required for site visits during development and construction, primarily in the Midwest.
• Serve as subject‑matter expert on substations and transmission lines to advise colleagues on managing the HV scope of a project.
• Maintain working knowledge of relevant utility tariffs and technical standards for interconnection.

• B.S. in Engineering required.
• Minimum 3+ years of substation design, transmission design, or protection and control design experience.
• Strong communication skills and ability to lead technical discussions among transmission owners, consultants, EPC’s, and internal stakeholders.
• Working knowledge of HV electrical principles, including HV & MV equipment specification, protection system coordination, and relaying principles.
• Able to read and interpret general arrangement, one‑line, control schematics, and other drawings for HV design and equipment.
• Familiarity with substation and transmission construction practices.
• Experience managing 3rd‑party engineering consultants for engineering studies and designs.
• Experience with transmission‑level Generation interconnection processes in at least one of MISO, PJM, SPP, ERCOT.
• EIT certification preferred.
• PE license preferred.
• Working knowledge of industry‑standard design codes such as NESC, NEC, IEEE 1547, IEEE 2800.
• Experience with AutoCAD, PLSCAD, RISA, PSSE, PSCAD, CDEGS, or Aspen preferred but not required.

This position is based in our Washington, DC office. It requires a hybrid work schedule with 3 days per week in the office during non‑travel weeks. Remote opportunities will be considered for the right candidate, requiring occasional travel to the DC office, once a month, and consideration of other work‑related travel.

The base salary ranges from $150,000 to $160,000 annually, depending on experience, qualifications, and fit. Sol Systems provides health insurance, retirement benefits, partial gym reimbursement, transportation benefits, education benefits, paid vacation, federal holidays, and the opportunity to work in an entrepreneurial environment.

Sol Systems is an equal‑opportunity employer and does not discriminate based on gender, race, ethnicity, orientation, creed, or other trait. Sol Systems supports and encourages candidates of all backgrounds to apply.