What these two lines solve
After 300+ community projects in Yantai, two new problems keep recurring:
- The transformer is full. A community or park wants more chargers and the utility answers: insufficient capacity, reinforcement required — and reinforcement often costs more and takes longer than the charging equipment itself. PV-storage-charging is the economical answer.
- Operating vehicles cannot wait. Heavy trucks, dump trucks and port shuttle vehicles bill per trip; an hour plugged in is a trip lost. For them, battery swap fits real operations better than any bigger charger.
PV-storage-charging in one paragraph
PV panels, a battery bank and the chargers join one system managed by an energy management system (EMS). Storage charges at night on cheap valley tariffs and discharges during the day when chargers peak, shaving the transformer's actual load below its limit. Many projects that would have needed hundreds of thousands of RMB in reinforcement run on a storage system instead — and earn the peak-valley spread on top. PV covers daytime self-consumption. The combined value is not just savings; it makes projects possible that otherwise were not.
Battery swap in one paragraph
Electric heavy trucks are never limited by range but by refuelling time: even a powerful charger needs one to two hours, and for a per-trip fleet that is lost revenue. Swap exchanges the whole pack in minutes — the rhythm of diesel refuelling. Depleted packs recharge slowly at the station, avoiding peak tariffs and extending battery life. Swap fits routes that are fixed, concentrated and high-mileage — port drayage, mine shuttles and construction-muck haulage around Yantai all qualify.
Which direction fits your site
| Your site | Typical profile | Better fit | Read |
|---|---|---|---|
| Industrial / logistics park | Capacity near limit, expensive daytime power, roof or spare land | PV-storage-charging | System composition |
| Port / mine / steel mill | Fixed routes, 200+ km per day, trucks | Battery swap | Station requirements |
| Bus / sanitation / works depot | Fleets return at night; schedule-sensitive | PV-storage or dedicated charging | PV-storage |
| Mall / office building | Scattered bays, 1–3h stays, image matters | PV-storage + EV chargers | EV chargers |
| Residential community | E-bike demand, fire rules are hard constraints | Community charging + shelters | Community → Shelters |
Where the money comes from
- Charging service fees — the base layer; it all depends on traffic and utilisation.
- Peak-valley spread — storage buys low, sells high to the chargers. Stable if the local time-of-use spread is wide enough.
- Demand-charge savings — for two-part tariff users, shaving peaks cuts the capacity-based basic charge, an item most park budgets underestimate.
We turned the arithmetic into live calculators in the tool centre. Every figure remains a theoretical value under ideal assumptions — real returns depend on traffic, tariff policy, availability and O&M quality.
How a project moves
Site survey (capacity, load curve, land, sunlight) with a data-backed report → design and return modelling → filing and grid-connection application → construction and commissioning → platform launch and O&M handover. Filing and connection procedures often take longer than construction — start them early; we handle the paperwork with the utility.