How clean is the grid behind Colt Shiohama?

Colt Shiohama runs on Japan's grid, which was 477 gCO₂/kWh and 33% clean in 2025 (Ember).

Where is Colt Shiohama located?

Colt Shiohama is in Tokyo, Japan.

Mapped (unverified)

Colt Shiohama

Tokyo, Japan

Colt Shiohama is a mapped data center in Tokyo, Japan. DataCentersExposed has documented a 32,679 sq ft footprint at this site. It runs on Japan's grid, which was 67% fossil-fuelled at 477 gCO₂e/kWh in 2025 (Ember).

Reporting by Eric Keller · Updated Jun 14, 2026

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Real parent

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Operator

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Est. capacity

~5-15 MW

Footprint

32,679 sq ft

Grid carbon

477 gCO₂/kWh

Clean electricity

33%

Region

Tokyo

Attribution & capacity confidence:mediumprimary source

Status · click to filter

Most sites are mapped — located but awaiting a second source. How we verify

Dot size = disclosed capacity (MW). Smallest = undisclosed, not small.

Overview

source: link

data center

The grid behind this site

source: Ember · Eurostat

Grid carbon intensity

477 gCO₂/kWh

Clean electricity

33%

Fossil electricity

67%

National grid context, not this facility's own metering. Full country picture: Japan data centers.

In the news

source: Google News (local + English)