Top 10: Green Cloud Computing Companies
The cloud is the invisible backbone of modern life, but it has a very tangible impact on our world.
This vast global network of data centres has an immense appetite for energy and water that grows every year.
With global data centre electricity consumption reaching 460 terawatt-hours in 2022, more than the entire nation of France, and the Gen AI boom promising to accelerate this demand exponentially, sustainability is now of the highest importance.
For the tech sector, environmentalism has become a strategic, economic and regulatory imperative. In fact, we have reached a point at which optimising for cost and optimising for carbon are two sides of the same coin.
In this week's Top 10, we'll take a look at ten of the cloud companies that are adapting best to this new reality.
10. DigitalOcean
Founded: 2011
Based in: New York, New York, USA
CEO: Paddy Srinivasan
Employees: 1,210
Notable feature: A developer-centric cloud platform renowned for its simplicity, predictable pricing, and focus on start-ups and SMBs
DigitalOcean's has earned its green credentials through its foundational efficiency. By catering to developers, start-ups, and small businesses, its platform inherently encourages right-sized infrastructure, rather than overprovisioning companies like many of its competitors.
This focus on simplicity and lean operations makes DigitalOcean inherently low-carbon.
While it lacks the headline-grabbing renewable energy projects of the hyperscalers, its business model fosters a culture of resourcefulness, making it a sustainable choice for the new generation of tech companies building from the ground up.
9. Akamai
Founded: 1998
Based in: Cambridge, Massachusetts, USA
CEO: Dr F. Thomson Leighton
Employees: 10,700
Notable feature: The world's largest and most distributed edge platform, bringing content and applications closer to users
Akamai sustainable superpower is the work it does on the network edge. As a global content delivery network (CDN) with over 4,300 points of presence, its core business is to reduce latency by caching data closer to its end users.
This inherently reduces the energy consumed by data travelling long distances across the internet.
Backing this up, Akamai is committed to recycling 100% of its e-waste and is actively working with industry groups to standardise emissions reporting, demonstrating a mature, holistic approach to greening the internet's infrastructure.
8. Salesforce
Founded: 1999
Based in: San Francisco, California, USA
CEO: Marc Benioff
Employees: 76,453
Notable feature: A pioneer of the Software-as-a-Service (SaaS) model and a global leader in Customer Relationship Management (CRM)
As a SaaS pioneer, Salesforce demonstrates leadership by embedding sustainability into its corporate DNA.
While it runs its services on hyperscaler clouds, it takes full responsibility for its environmental impact, maintaining net zero residual emissions across its entire value chain and powering its global operations with 100% renewable energy.
Salesforce’s true influence lies in its advocacy and its role as a force multiplier, though.
As one of the world's largest tech companies, it can set a powerful example for its vast ecosystem of customers and proving that a commitment to a nature-positive future is a competitive advantage.
7. Alibaba Cloud
Founded: 2009
Based in: Hangzhou, China
CEO: Eddie Wu (Alibaba Group)
Employees: 124,320
Notable feature: The leading cloud infrastructure provider in the Asia-Pacific region, driving digital transformation and sustainability
Alibaba Cloud is proving to be a force for good when it comes to the sustainability of Asia's booming digital economy.
The firm has taken many steps towards greening its own infrastructure, achieving an impressive average Power Usage Effectiveness (PUE) of 1.20 and sourcing 56% of its electricity from clean energy.
More importantly, though, is the fact that Alibaba's cloud technology actively enables its customers to go green, helping them cut 9.884 million tons of emissions in fiscal year 2024 alone.
6. Hewlett Packard Enterprise (HPE)
Founded: 2015
Based in: Spring, Texas, USA
CEO: Antonio Neri
Employees: 61,000
Notable feature: A leader in edge-to-cloud solutions with a strong focus on the circular economy and IT asset lifecycle management.
HPE is a champion for sustainability across the entire IT lifecycle, from edge to cloud.
Its strategy is built on a deep commitment to the circular economy, focusing on asset reuse and responsible supply chains.
HPE's products themselves are becoming more and more sustainable, too. Its fanless direct liquid cooling and its HPE GreenLake platform, which can lower infrastructure energy consumption by 53%, are some key examples.
By reducing its own overall carbon footprint by 13% year-over-year in 2024, HPE demonstrates a holistic and effective approach to sustainable IT.
5. Oracle
Founded: 1977
Based in: Austin, Texas, USA
CEO: Safra Catz
Employees: 159,000
Notable feature: Deep integration of sustainability metrics into enterprise software suites (ERP, SCM) and a robust hardware circular economy
Sustainability is embedded deep within Oracle's operations and products, which combine a highly efficient cloud infrastructure with a world-class circular economy for hardware.
An impressive 99.8% of all the firm's processed hardware is now either recycled or reused, and its European and Latin American data centres run on 100% renewable energy.
Oracle’s key differentiator, though, is its suite of Fusion Cloud applications, which allow customers to capture, manage, and report on their ESG goals directly within their core business systems, making sustainability a data-driven, operational reality.
4. IBM
Founded: 1911
Based in: Armonk, New York, USA
CEO: Arvind Krishna
Employees: 282,100
Notable feature: A research-driven approach using AI, blockchain, and strategic consulting to tackle systemic sustainability challenges
IBM approaches green computing as a strategic and systemic challenge, leveraging its deep research and consulting expertise.
While operating its own sustainable cloud, IBM's primary impact comes from empowering global enterprises with advanced tools.
It deploys AI-powered solutions to manage environmental risks and compliance, and uses blockchain to build transparent, efficient and sustainable supply chains.
With nine out of ten executives believing in AI's potential for sustainability, IBM is a crucial partner in turning that ambition into tangible action.
3. AWS
Founded: 2006 (Cloud computing services)
Based in: Seattle, Washington, USA
CEO: Matt Garman
Employees: 1,556,000
Notable feature: The world's largest corporate purchaser of renewable energy, leveraging unparalleled market scale for sustainability
AWS's command of the market contributes hugely to its carbon footprint, but, in other ways, it helps to drive sustainability at an immense scale.
As the world's largest corporate buyer of renewable energy, AWS achieved its goal of matching its electricity consumption with 100% renewables in 2024, a year ahead of schedule.
This commitment is matched by relentless innovation in efficiency, from its custom-designed Graviton processors that drastically cut energy use, to its impressive global Power Usage Effectiveness (PUE) of 1.15.
By also committing to be Water Positive by 2030, AWS demonstrates a powerful, scale-driven approach to greening the cloud.
2. Microsoft Azure
Founded: 2008 (as Project Red Dog)
Based in: Redmond, Washington, USA
CEO: Satya Nadella (Microsoft)
Employees: 1,500 (dedicated Azure personnel)
Notable feature: The industry's most ambitious sustainability commitments: to be carbon negative, water positive, and zero waste by 2030
Microsoft Azure sets itself apart with the most audacious and holistic sustainability goals in the industry.
Its three key sustainability pledges (to be carbon negative, water positive and zero waste by 2030) go far beyond neutrality, aiming to actively replenish resources and remove all its historical carbon emissions by 2050.
This ambition is backed by a US$1bn Climate Innovation Fund and radical research like Project Natick's underwater data centres.
While transparent about challenges, such as rising Scope 3 emissions from construction, Microsoft's comprehensive vision and powerful customer-facing tools, like the Microsoft Cloud for Sustainability, make it a leader when it comes to sustainability.
1. Google Cloud
Founded: 2008 (with App Engine)
Based in: Mountain View, California, USA
CEO: Thomas Kurian
Employees: 54,000
Notable feature: A pioneering, engineering-led approach to sustainability, headlined by its goal to operate on 24/7 Carbon-Free Energy by 2030
Google Cloud earns the top spot through its pioneering and deeply technical approach to sustainability. Long before its rivals, it achieved 100% annual renewable energy matching in 2017.
Now, it leads with its moonshot goal of running on 24/7 Carbon-Free Energy by 2030, which is a far greater challenge than annual matching because it requires clean energy to be available on the grid every hour of every day.
This engineering-first ethos is evident everywhere: from using AI to slash data centre cooling energy by 40%, to building hyper-efficient custom hardware.
By aiming to solve the root cause of emissions, not just offset them, Google is actively greening the grid itself.
