Green hosting
We’re committed to powering our data centres with 100% renewable energy from the sun, wind, and sea. Rather than relying on offsets, we ensure our operations are directly powered by clean energy wherever possible. As we continue to grow, we prioritise working with data centre partners who share our sustainability values—ensuring our infrastructure remains as energy-efficient and low-impact as possible.
See our green hosting
Energy efficient data centres
All our data centres operate with a PUE rating of 1.2 or lower. PUE, or Power Usage Effectiveness, measures the ratio of total energy used by a data centre to the energy delivered to computing equipment—the closer to 1, the more efficient the facility. Our flagship UK datacentre, for example, has a PUE of 1.05, meaning only 5% of its energy is used for infrastructure like cooling and power, with the rest reaching the servers.
Netwise East
PUE = 1.05
We currently operate from one hall in this brand-new data centre in East London, with the option to expand into a second hall as we grow.
Learn moreIron Mountain
PUE = 1.2
With decades of experience in high-security business services, Iron Mountain houses our US-based services in Phoenix, Arizona, and Edison, New Jersey, as well as our Amsterdam location.
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Trees planted so far
Reforestation plays a key role in our mission to reduce the environmental impact of hosting. For every Krystal customer, we plant a tree each month. Through partnerships with global tree-planting organisations, we’ve helped rebuild communities and restore natural habitats. As a Krystal customer, you’re contributing to this effort. Log in to your client area to track your impact and watch your virtual forest grow, tree by tree.
We also take responsibility for the carbon footprint of our team. Every Krystal employee has their emissions offset—not just for the time they work with us, but for their past footprint before joining too.
Green Initiatives
If the UK is to meet its net-zero commitment by 2050, businesses must play their part—and we’re no exception. The journey to a sustainable future is one we must take together. That’s why we’re proud to work with the following organisations…
- See our progress
One Percent for the Planet
As members of 1% for the Planet, we’ve pledged to donate at least 1% of our revenue to support environmental causes worldwide. Through these contributions, we’re working with thought leaders, communities, and impactful projects to drive sustainable change and foster a healthier planet.
- See our progress
1t.org
1t.org is a World Economic Forum initiative with a mission to mobilise, connect, and empower the global reforestation community to conserve, restore, and grow one trillion trees by 2030. In October 2021, we pledged to protect and plant one billion trees by 2030 as part if this effort.
- See our progress
Veritree
So far, we have planted over 3,000,000 trees through Veritree. Veritree provides businesses and non-governmental organisations with tools and technology designed specifically for large-scale reforestation. A key partner in our own Billion Tree Pledge, Veritree exists to create local jobs, sequester carbon, and help restore ecosystems by planting the right trees, in the right places.
- See our progress
Ecologi
With Ecologi, we have planted over 1,000,000 worldwide. We also support Gold Standard-certified sustainability projects—independently verified initiatives that create real carbon reductions. Learn more about Gold Standard.
We also enrol our 70+ remote team members in monthly climate-positive subscriptions, planting 4 trees and offsetting 0.66 tonnes of CO2 per employee every month. For new starters, we go a step further—offsetting their entire lifetime carbon footprint up to the point they join us and continue to offset their emissions throughout their time with us. - See our progress
B Corporation
In early 2023, we became a B Corp, making it part of our legal mission to have a positive impact on both society and the environment. It’s not just about sustainability—it’s about being a business that puts people and the planet first.
- See our progress
Million Tree Pledge
We joined the Million Tree Pledge as a founding member, committing to plant over 1 million trees—and with the support of our community, we made it happen. But the mission doesn’t stop there. The pledge is about driving ongoing impact, encouraging businesses and individuals to commit to large-scale reforestation. If you’re thinking about taking the pledge, you can learn more here.
- Learn more
SME Climate Hub
As members of the SME Climate Hub, we’ve made an internationally recognised commitment through the United Nations Race to Zero campaign. Our pledge is to halve emissions by 2030 and achieve net-zero emissions by 2050.
- See our progress
Trees for Life
We worked with Trees for Life, a Scotland-based charity dedicated to rewilding the Highlands with biodiverse forests. Together, we planted 19,120 trees across the Highlands, helping to restore natural habitats and support a healthy wildlife ecosystem.
Millions of trees, thousands of customers, one shared commitment
Sustainability isn’t an afterthought—it’s built into everything we do. From running our infrastructure on 100% renewable energy to planting millions of trees, we’re committed to a better way of powering the internet. But prioritising the planet doesn’t mean compromising on performance.
Krystal runs on our own in-house cloud platform—built for reliability, efficiency, and long-term sustainability. Building a better internet isn’t just about reducing impact, It’s about setting a new standard for responsible cloud hosting.
This is web hosting without the downsides
Just because we prioritise sustainability doesn’t mean we’re prepared to make sacrifices.
16x
Faster speeds
Sure, we’ve planted millions of trees, but our speed is also 16 times faster than other providers.
99.99%
Uptime guarantee
Sure, we run on renewable energy but we also guarantee an industry-leading 99.99% uptime at no extra cost.
Zero
Hidden costs
Sure, we offset the lifetime carbon of each of our staff, but we also don’t implement any hidden costs.
Ready to make the switch?
Show off your green credentials
Krystal’s hosting runs on 100% renewable energy, and we actively invest in reforestation and carbon reduction projects. If you’re hosting with us, you’re already making a more sustainable choice. Our Krystal Green Energy Badge lets you share that commitment with your website visitors.
The badge is free, has zero tracking, and is easy to use—just copy the embed code and paste it into your website. It’s a great way to show your dedication to reducing environmental impact while encouraging others to do the same.
You can also join our free affiliate programme to refer others to Krystal—simply replace the badge URL with your unique referral link and earn money for every new customer who signs up.
Try us risk-free with our 60 day no-quibble money back guarantee
We’re confident you’ll love the Krystal experience, but if you do wish to leave us within 60 days, you’ll get all your money back. There will be no hoops to jump through and no questions asked.