Design / Engineering for Microgrid System and DC fast charger

The City of Decatur, GA is soliciting a qualified engineering firm to deliver turnkey design, bid assistance, and construction‑administration services for a municipal microgrid at the Decatur Police Department. The microgrid must integrate a roof‑mounted 170 kW solar PV array, a 250 kW/500 kWh lithium‑ion battery energy storage system, and a DC fast charger for municipal EV fleet use. The scope includes site investigations, load analysis, system sizing, detailed electrical and structural design, utility coordination (Georgia Power), compliance with DOE grant and Buy‑America requirements, preparation of construction documents, and construction administration through commissioning. The award will be a single‑source contract; the selected firm must attend a mandatory pre‑proposal conference on Sep 21, 2026 and submit a sealed proposal by Oct 13, 2026. • Design of solar PV, BESS, and DC fast charger system architecture (grid‑connected & islanded modes) • Electrical one‑line diagrams, equipment schedules, and specifications • Structural analysis of roof for PV mounting • Utility interconnection and Make‑Ready program support with Georgia Power • Compliance documentation for DOE grant, Build America/Buy America, and local codes • Construction‑administration services, including bid assistance, RFI response, and commissioning plan • Deliverables: field investigation report, critical load assessment, design basis, construction bid package, cost estimate, and final commissioning/testing plan.