Region Preferencing for GitHub Actions and Workloads

Choose Where Your Workloads Run

CarbonRunner gives you granular control over region selection, allowing you to run jobs exclusively in:

• The UK: We have options to run workloads on carbon-neutral servers. (Coming soon)
• In Europe: Spain, France, Sweden, Norway are some of our favorites.
• The US Seattle and Washington state are two great low-carbon regions. We also enable regions like California when the solar is high.
• Canada Quebec is a real favorite of ours but also we can shift compute to BC, Manitoba and Ontario with great low-carbon options.
• Rest of the world: Always shifting we also run jobs in Brazil and New Zealand.

What’s the Trade-Off?

You might assume that choosing where your workloads run would come at a big cost. But not with us.

Even when specifying regional constraints, CarbonRunner still saves you 25% on average compared to Github. That’s because we optimise for both price and sustainability—no matter your configuration.

And here's the important part: We will only ever run your workloads in regions with a carbon intensity under 100g CO₂/kWh.. That’s a hard limit.

Our Carbon Benchmarks

On average, CarbonRunner workloads emit just 28g CO₂ per kWh—a massive reduction compared to conventional setups.

We use live grid data to shift workloads dynamically to the greenest zones in real time. Even if you choose to run jobs only in the UK, we'll only use data centres operating below the 100g CO₂/kWh threshold.

Right now, the UK's grid average is around 124g CO₂/kWh, but we're actively working on partnerships and infrastructure to bring this down—so your workloads stay compliant and climate-friendly.

Example: AI Training & CI Workloads

Tasks like training AI models or running CI pipelines are energy-intensive. Choosing the right location matters.

In the Midwest US, grid intensity has a high average of around ~700g CO₂/kWh—a huge environmental impact.

But CarbonRunner prioritises regions like Seattle and Washington State, where renewable power brings emissions close to our average of 28g CO₂/kWh. This ensures your heavy workloads stay light on the planet.

The Future: Smarter Sovereignty

At CarbonRunner, we believe the future of infrastructure is both sovereign and sustainable. We're building toward a world where:

• You can run compute where you need it Run builds and tests in regions with the cleanest energy, minimizing your environmental footprint.
• You're always under 100g CO₂/kWh Run builds and tests in regions with the cleanest energy, minimizing your environmental footprint.
• And you're still saving money Run builds and tests in regions with the cleanest energy, minimizing your environmental footprint.

We're not just here to reduce emissions—we're here to give you control, transparency, and better choices.

Got a compliance need? Want to keep your workloads local but green? Let's talk about how CarbonRunner can help you do both.