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Sustainability through Cloud Hosting with Green Energy - What's Behind It?

Since 2015, there has been a growing trend towards sustainability in the IT industry: More and more providers are offering dedicated or virtual servers and Cloud Hosting powered by green energy. They assure their customers that every data center uses renewable energy sources for its power supply. This approach significantly contributes to reducing greenhouse gas emissions, as the energy consumption for hardware and cooling is high, and the demand for powerful IT infrastructure is constantly increasing. Technologies like the 5G mobile standard and a continuous increase in network bandwidth are further accelerating this trend.

What Does Cloud Hosting with Green Energy Actually Mean?

When a provider labels their server or Cloud Hosting as green energy-powered, it does not necessarily mean that the power supply is exclusively from renewable sources - just like in households, this is technically impossible because conventional power plants using fossil fuels need to be used as a backup to ensure a constant power supply. Additionally, a data center - with extremely rare exceptions like some hydroelectric facilities in Norway or geothermal generators in the USA - does not have its own autonomous power supply, but rather draws its consumption from industrial grids and national energy exchanges.

Furthermore, it's important for a customer to consider that there is a significant difference between a web hosting provider offering servers and Cloud Hosting with green energy and one that ensures a data center uses exclusively renewable energy sources. The term "with" specifically implies a certain and often variable proportion that is not subject to legal regulations and is only precisely specified in the contract in exceptional cases. Sustainability is not guaranteed in this case if the company in question does not provide clear information about its energy mix or publish a binding schedule.

How Does Cloud Hosting with Green Energy Impact Sustainability?

Many users underestimate the high energy consumption caused by the internet and modern information and communication technology. Specifically, streaming high-resolution videos proves to be demanding upon closer inspection, as very large amounts of data need to be transferred. The estimated average consumption is about one kilowatt for just ten minutes of film, not including the devices used such as Smart TVs, phones, or computers. The key contributors are:

• Queries to search engines, which alone amount to several billion a day on Google
• Video conferences with numerous participants
• Streaming high-resolution videos via platforms like YouTube, Netflix, or Amazon Prime
• Artificial Intelligence (AI) through powerful coprocessors like graphics cards
• Compute-intensive scripts for interactive web page display with many visitors
• Cloud-based applications through Software-as-a-Service (SaaS) or Infrastructure-as-a-Service (IaaS)
• Game streaming like Nvidia GeForce Cloud Gaming

Even more efficient and faster protocols like HTTP/2 do not offer a solution to the challenges, but rather serve as a tool. Cloud hosting with green electricity significantly contributes to enabling sustainability in relevant applications. Although traditional virtual and dedicated servers prove to be less significant compared to these highly power-intensive processes, they also generate a significant share due to their high numbers. Regardless of its use, every data center that relies solely on renewable energies for its power supply represents progress that promotes sustainability. In the medium and long term, a transition to virtual servers, dedicated servers, and cloud hosting with green electricity proves to be indispensable in order to meet the continuously growing demand for computing power through renewable energies.

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