Research, screen.is

Lifecycle analysis

“In France, we tend to follow a Life-Cycle Assessment (LCA) approach that includes four factors: GHG emissions (CO2eq), water consumption (Liters), abiotic resources consumption (Sbeq. or Antimony equivalent) and energy consumption (MJ). Like everybody else we measure these impacts on three different poles: data centers, networks and end-user equipment… So what’s the difference with the English-speaking approach? The main focus seems to be on reducing carbon emissions through the vector of electricity.” Gauthier Roussilhe

Water, Resources, Energy & CO2eqv (wrec)

Water

In the rush to cut CO2 emissions, giant data centre owners like Google have switched from energy-intensive air conditioning to cool the servers, for water cooling. With data centres often built in hot and dry regions, the demand for billions of gallons of water in drought-prone regions creates a new and growing problem.

“In Red Oak, Texas, a town about 20 miles south of Dallas, Google wants as much as 1.46 billion gallons of water a year for a new data center… Ellis County, which includes Red Oak and roughly 20 other towns, will need almost 15 billion gallons for everything from irrigation to residential use.” https://time.com/5814276/google-data-centers-water/

Resources

before you start using a piece of electronic equipment, it has already emitted 70% of its lifetime CO2. So the best you can do to avoid emissions is to avoid buying or renewing an electronic device in the first place." https://marmelab.com/blog/2020/09/21/web-developer-climate-change.html

Energy

"For example, a 50-inch LED television consumes much more electricity than a smartphone (100 times) or laptop (5 times). Because phones are extremely energy efficient, data transmission accounts for more than 80% of the electricity consumption when streaming.." https://www.iea.org/commentaries/the-carbon-footprint-of-streaming-video-fact-checking-the-headlines

Lifecycle analysis