Electrical Design Engineer - Microgrids, Morrisville/Raleigh, NC

About the role

Delta is leading the energy transition with innovative solutions in solar inverters, energy storage systems, and EV charging infrastructure. Our technologies are helping utilities, businesses, and communities decarbonize and build resilient, intelligent energy ecosystems. Join us in creating a cleaner, smarter energy future.

Key Responsibilities

• Electrical Design
  • Develop single-line diagrams, three-line diagrams, protection one-lines, and load flow / short-circuit / arc-flash studies for BESS + PV + genset microgrids from 500 kW to 200 MW
  • Size and specify medium-voltage (up to 35 kV) and low-voltage equipment: transformers, switchgear, breakers, PCS, BESS enclosures, PV inverters, and auxiliary loads
  • Perform grounding, cable sizing, conduit fill, voltage-drop, and harmonic (IEEE 519) analyses; issue stamped calculation packages where required
  • Author equipment specifications, technical bid evaluations, and RFQ packages for utility-grade balance-of-plant
• Protection & Control Interface
  • Develop protection schemes (50/51, 27/59, 81/ROCOF, 25, 32, 87) and coordinate settings with IEDs; validate anti-islanding and ride-through per IEEE 1547-2018 / UL 1741-SB / IEEE 2800 as applicable
  • Partner with the controls team on IEC 61850 GOOSE / MMS mapping, SCADA point lists, RTAC I/O schedules, and PCC metering
  • Support commissioning of grid-forming and grid-following modes, black-start sequencing, seamless islanding, and PCC resynchronization
• Project Execution
  • Serve as the electrical engineer of record across RFQ, award, detailed design, procurement, factory acceptance test (FAT), site acceptance test (SAT), and commissioning phases
  • Coordinate with utility interconnection engineers through application, study, and witness-testing milestones
  • Own the AHJ / township submittal package: NEC, NFPA 855 (BESS), NFPA 70E, IBC / IFC compliance, and stamped drawings via licensed PE where required
  • Track electrical scope on cost, schedule, and quality; drive resolution of RFIs, change orders, and site punch lists

Minimum Qualifications

• B.S. in Electrical Engineering (Power Systems concentration preferred); M.S. a plus
• 5+ years of electrical design experience in one or more of: BESS, microgrid, utility-scale PV, industrial power, or substation engineering. Senior candidates: 8+ years
• Working knowledge of NEC (NFPA 70), NFPA 855 for energy storage, IEEE 1547-2018, IEEE 519, and IEEE C37 protection series
• Hands-on experience with ETAP, SKM PowerTools, EasyPower, or Auto Electric for load-flow, short-circuit, arc-flash, and protection coordination
• Comfort reading and producing single-line diagrams, control schematics, and cable schedules; AutoCAD Electrical or equivalent
• Ability to work on-site at the Raleigh (Morrisville) or Detroit-area (Plymouth Township) office and travel to project sites 15–25% of the time
• Legally authorized to work in the United States without sponsorship

Preferred Qualifications

• Professional Engineer (PE) license in NC, MI, or ability to obtain reciprocity within 12 months
• Direct commissioning experience with grid-forming inverters, battery energy storage systems, or hybrid PV+BESS plants
• Familiarity with IEC 61850 (GOOSE / MMS / SV), SEL RTAC platforms, DNP3, and Modbus TCP
• Experience interfacing with utility interconnection processes under FERC 2222, IEEE 1547.1 conformance, or ISO/RTO market participation rules