Level 2 Ampup

Gridline

1421 Harvard Ave, Seattle, WA 98122

Max power: Up to 7.2 kW; Level 2
Charging ports: 10; J1772
Price: Price not listed; Per network listing
Hours: 24/7; Open all day

Gridline is a Level 2 station run by Ampup at 1421 Harvard Ave in Seattle, WA. It has 10 charging ports with J1772 connectors and delivers up to 7.2 kw. Pricing is set by the network app, and the site is open 24 hours a day.

How long will charging take?

Range added per hour

~24mi

10% to 80%, 77 kWh battery

~8.3hours

Estimates for a typical long-range EV. Real times depend on your car's maximum charging rate, battery temperature, state of charge and whether power is shared between neighbouring stalls. How charging speed works

Connectors and compatibility

J1772

10 ports · 7 kW

The universal Level 2 AC plug in North America.

Works with: Every non-Tesla EV and plug-in hybrid. Teslas charge with the J1772 adapter that ships with the car.

Pricing

Price not listed

Prices can vary by time of day and membership. The Ampup app shows the live rate before you start.

Location and access

Address: 1421 Harvard Ave
Seattle, WA 98122
Coordinates: 47.61343, -122.32249
Hours: 24/7
Phone: 206-294-3453
Network: Ampup
On site: 24/7 Access

Questions drivers ask

How fast is Gridline?

It is a Level 2 station delivering up to 7 kW, which adds roughly 24 miles of range per hour. It suits charging while you shop, work or stay overnight rather than a quick road-trip stop.

How much does it cost to charge at Gridline?

Ampup has not published a fixed price for this site. Rates are shown in the Ampup app or on the charger screen before you start a session.

What plugs does Gridline have?

10 × J1772 (Type 1) up to 7 kW.

Is Gridline open 24/7?

Yes, the network lists it as open 24 hours a day.

Source: U.S. Department of Energy Alternative Fuels Data Center (AFDC), station ID 421544. Last confirmed by the network on Sep 12, 2025; opened Apr 9, 2024.