Penglai differs from the urban districts in two ways that decide whether a charging project lasts: seasonality and salt. Visitor numbers push demand up sharply in the season, and the salt-laden air corrodes ordinary powder-coated steel within about two years. A Penglai specification that ignores either ends up with queues in August and rusted enclosures by year three.
Seasonality: leave headroom, stage the hardware
Sizing to the resident population guarantees queues when the season hits. We design to the annual peak with 20–30% headroom — or, better for cash flow, run tray routes and grid capacity in one pass and add devices in batches, topping up before the season instead of letting equipment idle all winter. The second approach wastes neither capital nor hardware life.
Salt spray: specify for the coast
Penglai is nearly surrounded by sea. Outdoor enclosures should be 304 stainless steel or hot-dip galvanised with fluorocarbon coating; shelters in aluminium alloy or hot-dip galvanised steel. Ordinary cold-rolled steel with powder coating starts rusting within about two years in this air — cheaper on the quote, dearer over a decade. Protection grades: IP54 minimum outdoors, IP55+ in exposed or humid spots, concrete hardstands graded to shed water.
Three project types in the district
- Urban residential compounds — 10-port e-bike stations as the backbone, a few 7kW AC chargers, aimed squarely at eliminating dangling cables and stairwell charging.
- Tourism and homestay clusters — vehicle charging led, DC share raised for visitors topping up between sights.
- Township and rural communities — e-bike first, hardy low-temperature equipment, IP54+, billing that accepts both scan and card because older riders still use cards.
Local survey, area-based maintenance
Penglai sits about 70 km from central Yantai, and remote dispatch is why many district projects decay — response times stretch, small faults fester. We survey locally and assign O&M by area rather than commuting crews from the city: 7×24 platform monitoring, 4-hour fault response, attendance per agreed SLA. Compliance follows the 2021 national fire regulation and the standard acceptance list — dedicated circuits, per-port 30 mA RCDs, overload self-recovery, full-charge stop with an 8-hour cap, extinguishers and smoke detection, lighting and CCTV, physical separation from evacuation routes, and signage on the wall.
How we deliver in Penglai District
- Free survey — site walk-through, photos, clamp-meter load recording where capacity is tight, then a written proposal with a fixed price.
- Grid application — we prepare drawings and paperwork and deal with the power supply company, so the property does not chase forms.
- Construction — in-house crews, cable trays and distribution boxes done to specification, typical duration 7–15 days.
- Platform onboarding — every device registered on Dongdian Huichong: scan-to-charge, billing, remote control, revenue dashboards and automatic fault work orders.
- Operation and maintenance — 7×24 monitoring, 4-hour fault response, on-site attendance within 24 hours, local spare parts, quarterly inspection.
Four safety configurations we do not cut
| Configuration | What it does | Why it matters |
|---|---|---|
| Independent RCD per port | 30 mA trip, under 0.1 s | One faulty port does not cut the whole station or other residents' charging |
| Overload cut-off with self-recovery | Breaks on abnormal current, restores automatically | Ageing batteries and poor chargers can pull 500 W+; unmanaged heat is a main fire cause |
| Full-charge auto-stop plus 8-hour cap | Stops on detected full charge, hard stop at 8 h | Prevents overcharge swelling and endless floating |
| Power-off memory | Restores billing state after an outage | Avoids disputes during the stormy season |
Three ways to cooperate
| Model | Cash flow for the property | Revenue share |
|---|---|---|
| We invest and operate | Zero cost; positive from month one | Property receives 30–40% of service-fee revenue |
| Joint investment | One-off contribution; payback typically 3–5 years | Property share up to 50–60% |
| Property buys, we maintain | Largest upfront spend | All revenue to the property; annual O&M fee |
Whichever model you choose, the property gets a platform account and sees every session, hour and yuan of revenue in real time. Settlement is calculated on the platform, so reconciliation is a report, not an argument.
Reference price ranges
| Scope | Reference range (RMB) |
|---|---|
| 10-port e-bike station incl. standard installation (cabling within 30 m, RCD box, signage) | 12,000–22,000 |
| 20-port e-bike station incl. standard installation | 18,000–32,000 |
| 7kW AC charger, device | 1,500–3,500 per unit |
| 7kW AC charger, installation | 1,000–2,500 per unit |
| 60 m² charging shelter with 10 ports, fire kit, lighting and CCTV | 35,000–55,000 |
These are public industry reference ranges, not a Dongshang quotation. Site conditions vary widely across Yantai; the binding figure is the fixed-price quotation issued after a free survey. We quote one price with no hidden additions.
Common questions
- What equipment survives the Penglai coast?
- 304 stainless steel or hot-dip galvanised enclosures with fluorocarbon coating, aluminium or hot-dip steel shelters, IP54 minimum outdoors. Ordinary powder-coated steel starts rusting in about two years in the local salt air.
- How do you handle the tourism season peak?
- Design to the annual peak with 20-30% headroom, or run trays and capacity once and add devices in batches before the season — staged hardware keeps capital productive in the off-months.
- Is maintenance really local in Penglai?
- Yes. O&M crews are assigned by area, not dispatched from central Yantai: 4-hour fault response on 7x24 platform monitoring, with attendance per the agreed service level.
Charging services across Yantai
We also survey, build and operate in Longkou · Laiyang · Laizhou and every other district of Yantai. Related pages: community charging projects, e-bike charging stations, charging shelters, cooperation models for property managers and the online calculators for investment estimates.