Hourly consumption

This figure is taken from a CarbonBrief article using IEA data, and criticizing the Shift Project's initial calculations of the carbon footprint of video streaming.

"Taken together, my updated analysis suggests that streaming a Netflix video in 2019 typically consumed around 0.077kWh of electricity per hour."

Which considering the footprint of the global electricity mix for the year results in 36 gCO₂/hour of video streaming.

We choose not to differentiate between modes of Internet use (and therefore the hourly electricity consumption associated with each of these uses) because the electricity consumption associated with video streaming is already low (it would be even lower for an hour of e-mailing or reading a newspaper article online). Combined with a low-carbon electricity mix (as is the case in France), this represents, in fine emissions. Note, however, that power consumption depends on the terminal used, and is therefore much higher on a 50-inch ultra HD TV than on a smartphone

Here are other sources that give significantly different results:

• 400 gCO₂/h for the Shift Project (after correction)
• 100 gCO₂/h for Netflix (DIMPACT)
• 36 gCO₂/h for the IEA (even reduced to 4g for France if I understand correctly, due to the carbon intensity of the electricity mix)
• 28 gCO₂/h for Greenspector (for use of Canal + services)