Renewable Energy Engineering Companies
Directory of renewable energy engineering companies — solar, battery storage, EV charging, microgrid, and utility interconnection firms with PE licensure across the US.
What renewable energy engineering companies do
Renewable energy engineering companies design and stamp the technical drawings that get clean-energy projects built — solar PV, battery storage, EV charging, and microgrid systems. Scope typically covers feasibility, energy modeling, PE-stamped electrical and structural drawings, utility interconnection packages, and AHJ permitting.
The best firms combine local PE licensure with strong utility relationships (Xcel, PG&E, ConEd, Duke) and fluency in the current NEC, NFPA 855, IEEE 1547-2018, and IRA / ITC / PTC requirements that drive eligibility for federal and state incentives.
Services offered
Rooftop, carport, ground-mount, and utility-scale PV design with PE-stamped drawings.
BESS sizing, NFPA 855, UL 9540, and interconnection for commercial and industrial storage.
Level 2 and DCFC site design, NEVI corridor stations, and fleet electrification.
PV + BESS + genset integration with grid-forming inverters and islanding controls.
Single-lines, arc-flash, protective device coordination, and utility service design.
AHJ permit sets and utility interconnection packages (IEEE 1547-2018, NEC 705).
How to compare renewable energy engineering companies
- Confirm PE licensure in every state on the project.
- Check utility relationships and prior interconnection history.
- Match software fluency (PVsyst, HelioScope, SKM, ETAP) to your project type.
- Ask for prior projects at similar scale and technology (solar vs BESS vs microgrid).
- Review deliverables — single-lines, structural, permit, interconnection package.
- Align on fee structure — per-watt, lump sum, or T&M — and milestone billing.
Find renewable energy engineering companies
Browse PE-licensed firms by state and specialty, or post a project and get matched.
FAQ
What does a renewable energy engineering company do?
Designs, models, and stamps solar PV, battery storage, EV charging, and microgrid systems — including feasibility, energy modeling, permit drawings, and utility interconnection.
How do I compare renewable energy engineering firms?
Compare state PE licensure coverage, utility relationships (Xcel, PG&E, ConEd, etc.), software (PVsyst, HelioScope, ETAP), NFPA 855 experience, and prior project references at your scale.
Do renewable projects always need a licensed PE?
Nearly always. Commercial PV, BESS, EV DCFC, and any interconnected project require PE-stamped drawings from an engineer licensed in the project state.
What software is standard?
PVsyst, HelioScope, and SAM for solar; HOMER Pro and RETScreen for microgrids; SKM, ETAP, and EasyPower for electrical studies; PVSketch or AutoCAD for site plans.