A grid connection application asks the utility, in its own form, whether a stated load can be served at a stated site. It stands on one project document — the load statement, built from stated per-port power — and ends with one utility document, the written offer: capacity, connection point, metering and terms. Fees, timetables and capacity outcomes are the utility’s to state; no article can quote them.
Key Takeaways
- The application stands on the load statement: stated per-port power, summed honestly — shared ceilings counted once.
- Capacity, connection point, metering, cost-sharing and timetable arrive only in the utility’s written offer.
- Fees and durations are the utility’s figures; the connection line stays provisional until the offer lands.
- Sequence hardware after the offer — units delivered before it are stranded.
The Application Sequence
| Step | The project’s input | The utility’s output | The programme risk |
|---|---|---|---|
| 1. The load statement | Per-port stated power summed across the design, the phases involved, and the phasing — what is applied for now, what is reserved for later | Acknowledgement and the study’s scope | An understated load returns as a redesign and second application; an overstated one prices capacity never used |
| 2. The utility study | The site and supply details the utility requests, in its form — existing service, connection point, design assumptions | The study itself: the utility’s document, on the utility’s timetable | The programme waits here; the honest schedule carries this step as the utility’s duration, not an invented number |
| 3. The offer and conditions | The accept-or-revise decision, against the real design and budget | The written offer: capacity granted, connection point, metering, and how network reinforcement is cost-shared | Until the offer lands, every budget’s connection line is provisional — priced by nobody |
| 4. Works sequencing | Electrical design and civils sized to the offer; hardware ordered against it | Connection works scheduled and energisation dated by the utility | Hardware bought before the offer is the classic stranding: chargers in a finished car park with nothing to connect to |
Building a Load Statement That Survives the Study
The statement is arithmetic on stated facts. Sum the design as it will actually run: the EV-AC03201T contributes its shared ceiling — two Type 2 connectors at up to 43 kW shared, not two 22 kW loads added twice; a EV-ACT3204PE wallbox contributes 22 kW three-phase; the EV-RHDC30K-L contributes its compact DC class of 22 kW — well below the U.S. DOT’s 50–350 kW fast-charging band, the class difference a utility study probes. Then apply the wiring logic the NEC sets: EV charging is a continuous load, so circuits are sized at 125% of charger current — a 40 A charger takes a 50 A breaker — as our walkthrough of building load calculation basics shows at building scale. Two disciplines keep it defensible: say which loads are simultaneous and which are phased; and freeze exact models and variants — including the RHDC30K-L’s DC connector variant, confirmed in writing — before the examined design is drawn.
A funded project carries a second rulebook: U.S. NEVI-funded corridor sites carry the duties of 23 CFR Part 680 — DC ports of at least 150 kW, 24/7 opening, contactless payment and uptime above 97% — and compact-class hardware misses that threshold, so the funding question belongs in the load statement.
The Cost Question, Answered at the Right Level
Most application questions are really setup-cost questions, so the boundary matters. The published U.S. DOE-cited anchors price equipment and installation — public Level 2 at about $3,500 plus $2,500 per connector, DC fast charging at about $38,000–$90,000 plus $20,000–$60,000 — and they do not price the connection, as our breakdown of why DC fast charging is expensive and the commercial installation cost guide keep separate. Application, study and reinforcement charges appear only in the utility’s documents for the specific site. Carry that line as provisional until the offer arrives, and bring load statements to our commercial charging team via contact us when quantities are fixed against it.
Frequently Asked Questions
How long does a grid connection application take?
As long as the utility’s process takes for that site and load — assessment, study and works run on its schedule, and no verified general timetable exists. Build the programme around the utility’s stated dates, and treat any duration promised before the study as a guess.
What does the connection itself cost?
Whatever the utility’s offer states: application and study charges, and any cost-sharing for network work, are its figures, in its documents. The DOE ranges price chargers and installation, not the connection — which is why that line stays provisional.
Can we apply before the chargers are chosen?
The application needs a load statement, which needs stated per-port power. Apply on the design’s real hardware classes; freeze exact models before the examined design is drawn — a changed load is a changed application.
Related Reading
- Adding EV Chargers to a Building: Load Calculation Basics
- Why Is DC Fast Charging So Expensive?
- How Much Does It Cost to Install a Commercial EV Charging Station?
