What “green hosting” should actually mean

In short: green hosting should mean renewable power, efficient infrastructure that doesn’t waste energy, websites that send less data, and real action for nature — not just a certificate.

The internet is estimated to use over 400 terawatt-hours of electricity a year — more than the entire UK. Every page view involves data centres, networks and the device in your visitor’s hand. So when a host calls itself “green”, it’s worth asking what that actually covers.

Many hosts buy renewable energy certificates and stop there. That’s useful, but it’s the easiest part of the job. Here’s the checklist we think green hosting should meet.

1. Renewable energy is the baseline

Hosting should run on renewable electricity, full stop. Our hosting infrastructure is powered by 100% renewable energy, and websites hosted with us pass the Green Web Foundation’s check, which independently verifies that a site’s hosting is backed by renewable energy.

If you want to check any host, you can test a website address with the Green Web Foundation’s free green web check.

2. Efficiency matters as much as the energy source

Even renewable electricity isn’t unlimited, so wasting less of it matters. Two things make the biggest difference:

• Data centre efficiency. Power usage effectiveness (PUE) compares the total energy a data centre uses with the energy that reaches the servers. A PUE of 1.0 would be perfect; the facilities we use run at around 1.2, meaning little energy is lost to cooling and power distribution.
• Not running idle hardware. Traditional shared servers draw roughly the same power whether they’re busy or quiet. Our autoscaling platform adds resources when traffic rises and releases them when it falls, so capacity follows real demand.

3. The greenest data is the data you never send

The greenest kilobyte is the one you never send.

Hosting is only one part of a website’s footprint. Every megabyte also travels through networks and gets processed on your visitor’s phone or laptop. Lighter pages are faster and use less energy along the whole chain.

That’s why every Hostwoody plan includes a CDN that serves content from locations close to visitors, plus server-level image compression, WebP conversion, lazy loading and code minification. These tools cut page weight without you installing extra plugins.

Quick wins for a lighter website

• Resize images to the size they’re displayed at, and use modern formats such as WebP.
• Remove plugins and scripts you no longer use.
• Switch on CDN caching and one-click optimisation in your control panel.
• Avoid autoplaying video and oversized background images.
• Keep fonts to one or two families and weights.

4. Hardware and operations

Efficient, modern servers do more work per watt, and redundant infrastructure means fewer emergency replacements. Operations count too: our infrastructure partner’s head office runs on its own solar array, and paperless working, recycling and cycle-to-work schemes all help at the margins.

5. Giving something back

Reducing harm is essential, but it doesn’t repair damage already done. That’s why Hostwoody donates 10% of sales to Scotland: The Big Picture, a charity building support for rewilding across Scotland.

Rewilding restores natural processes — native woodland regenerating, peatland recovering, rivers flowing more naturally. Healthy ecosystems store carbon, support wildlife, improve water quality and reduce flooding. Unlike a one-off offset purchase, it needs steady, long-term funding, which is exactly what a share of every hosting invoice provides.

A simple checklist for choosing green hosting

1. Is the hosting powered by renewable energy, and does it pass an independent green web check?
2. Does the provider use efficient data centres and avoid idle hardware?
3. Does it include a CDN and optimisation tools that make pages lighter?
4. Is it transparent about who runs the infrastructure?
5. Does it take any direct action for nature beyond buying certificates?

If a host can answer yes to all five, its “green” label means something.