Because the northern hemisphere is mostly land mass and the southern hemisphere is mostly ocean. Land heats faster and cools faster than ocean, thus the seasonal effects are more pronounced in the data.
Same with CO2 patterns which gives a similar yearly ‘breathing effect’
This article is about global electricity production, not all energy combined. This is an important nuance, as much energy consumption uses fossil fuels directly, namely cars, many (older) house or industrial processes. Only a small fraction of this is electricity, and in the grander scheme, the “renewable” part is only a fraction: https://ourworldindata.org/energy-production-consumption.
So, while this is a step in the good direction, it is only a very small one.
@BlackLaZoR@[email protected] would you mind updating the title to reflect this?