ARQVOLTGrid 50.01 HzDiscuss a Project
Corridor between battery enclosures at night

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Project

06

Fleet electrification

Demonstration project

Harbour Line Depot

A bus depot charged overnight without a costly grid upgrade, thanks to on-site storage.

Oslo, Norway

Commissioned

2025

12 MW peak

Charging

8 MW / 16 MWh

Storage

140 electric buses

Fleet

Existing 11 kV

Connection

Sector

Grid

Technology

Charging + BESS

Capacity

12 MW

Client

Demo transit authority

Delivery

9 months

(01) Challenge

What stood in the way

Electrifying a 140-bus depot would have required a costly grid upgrade with a long lead time.

(02) Solution

What we built

On-site storage charges slowly through the day and delivers high power overnight, so the depot charges every bus on the existing connection.

Battery enclosure corridor with status lights
Grid-scale battery storage site beside a substation at dusk
Engineer checking a tablet beside an open equipment rack

(03) Outcomes

What the system

delivers.

Illustrative demonstration figures.

€4.1M

Grid upgrade avoided

140

Buses charged nightly

9 months

Concept to operation

(04) System details

Under

the hood.

Key specifications of the delivered system. Illustrative values.

Charging

12 MW peak

Storage

8 MW / 16 MWh

Fleet

140 electric buses

Connection

Existing 11 kV

Let’s build infrastructure

for what’s next.

Tell us about your site, your load or your grid connection. An engineer — not a sales team — will reply within two working days.

Let’s build infrastructure

for what’s next.

Tell us about your site, your load or your grid connection. An engineer — not a sales team — will reply within two working days.

Let’s build infrastructure

for what’s next.

Tell us about your site, your load or your grid connection. An engineer — not a sales team — will reply within two working days.

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