Green hosting guide

Is Kualo green?

What we can show about Kualo's hosting, each piece with its source and the date we checked it.

Evidence checked 17 October 2026. Green Web Foundation directory checked 17 October 2026.

Green Web Foundation

Listed in the Green Web Foundation's directory of verified green providers, checked 17 October 2026.

GWF lists it as “Kualo” (provider 661).

GWF does not publish when a provider was last verified. Providers verified before October 2026 are reassessed under its new criteria, which no longer accept offsets, at their next reverification.

What GWF verification means, and its new criteria

Where its data centres are

One data centre in East London and one in Tampa, Florida; customers choose.

Each country's average grid carbon intensity, from Ember: the grid where the data centres are, not the provider's own supply.
CountryGrid averageYear
United Kingdom218 gCO2e/kWh2025
United States384 gCO2e/kWh2025

We operate from two world class hosting facilities, one in the United Kingdom and one in the United States.

https://www.kualo.co.uk/company/our-infrastructure Undated

Grid figures: Ember, Yearly electricity data (2026), CC BY 4.0.

Kualo's own evidence

Green web hosting

In the UK, every watt of energy consumed in the datacentre has been purchased from 100% renewable sources, including wind, sun, and sea.

https://www.kualo.co.uk/webhosting/green-web-hosting Undated

Covers
The UK data centre.
Backed by
Bought on the wholesale market through energy brokers; certificates or contracts are not stated.
Note
The same page planned rooftop solar by 2025; we found no sign it was built.

Kualo commits to 100% renewable energy (Green-e)

Kualo, has purchased enough Green-e Energy certified clean energy to power 100% of its U.S.–based operations, including data centers.

https://www.green-e.org/?p=4575 16 July 2017

Covers
US operations, from 2017. Published by the certifier, not by Kualo.
Backed by
Renewable energy certificates from US wind farms.

Compared with

Our checker on its website

When the checker launches, this section will show its measurement of Kualo's own website: a fact about that one website, not about how its customers' sites are hosted.

Listing data from the Green Web Foundation's Green Web Dataset, made available under the Open Database License (ODbL).

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