Buyer Guide
Solar + EV Charging RFQ Checklist for Export Projects
EV charger quotes go sideways when buyers only send “need 120 kW DC.” Suppliers need site context, electrical limits, connector standards, and whether solar or batteries are on the same bus. This checklist mirrors what Osiwei catalogue buyers typically clarify before a line-card or project quote.
Define the site and charging behavior
State whether the project is workplace parking, fleet depot, retail, hospitality, public hub, or a solar-backed microgrid pilot. Note average dwell time, expected sessions per day, and whether charging is primarily daytime (solar-friendly) or overnight. Fleet depots often need predictable overnight AC plus daytime DC top-up; public hubs may prioritize dual-gun DC headroom and payment hardware.
Specify AC vs DC mix and power per port
Catalogue lines span roughly 7–360 kW DC and 7–44 kW AC. For each location, list target kW per port, gun count, and whether ports are shared or dedicated. Examples: 7–22 kW AC for staff parking, 60–120 kW DC for visitor bays, 180–360 kW hubs for highway-style turnover. If you are unsure, provide vehicle types and desired km/hour of range added instead of only a marketing kW number.
Connector standards, networking, and load management
Name destination-market connectors (CCS1/CCS2, GB/T, CHAdeMO, NACS) per port or per site. Confirm OCPP version (1.6 vs 2.0), whether POS or RFID is required, and connectivity (WiFi, 4G, LAN). For sites with limited service capacity, note dynamic load balancing (DLB) needs and any ISO 15118 requirements. Harsh outdoor installs may need IP65-class enclosures rather than standard IP54 wall boxes.
Electrical supply and solar + BESS coordination
Share available grid voltage (e.g. 380/400 V three-phase), existing transformer headroom, and whether generators or BESS will back the chargers. If PV is on site, note array kWp, inverter export limits, and whether chargers should prioritize solar surplus, peak shaving, or full fast-charge regardless of irradiance. Mobile ESS or catalogue mobile DC units may be relevant when grid upgrades are delayed—call that out explicitly.
Commercial, certification, and timeline fields
Include destination country, indoor vs outdoor placement, target install window, and certification expectations (e.g. CE/TUV paths, UK Pen fault on AC). Mention payment settlement, branding/skin, cable length, and maintenance access. Distributor RFQs should add MOQ, Incoterms, and whether the request is a line card or a named model list (SC/HC/FC/ACQ/ACP series codes help).
Request a quote for solar + EV charging + storage
Use the contact form, then include charging behavior (AC/DC mix, kW/port), connector + OCPP needs, supply voltage/headroom, and PV+BESS coordination rules. Add destination market/certifications, Incoterms/port, quantity, and timeline for a quote-ready response.
Request a Quote