Studies are finding waste heat from thermo-electric plants may not be insignificant. In this study [1] "energy consumption" is a shorthand for all human heat emissions from combustion engines, industrial processes and thermo-electric plant generation / consumption, etc. A large portion of human heat release can be attributed to thermo-electric generation. Electricity consumption accounts for 18% of energy use, with generation around 30% efficient that means coal,gas and oil power stations account for somewhere around half of global fossil fuel burn. [2]

From: Nature - A new global gridded anthropogenic heat flux dataset with high spatial resolution and long-term time series (2019) [1]

> For example, Zhang et al.5 found that energy consumption could lead to increases in winter and autumn temperatures of up to 1 °C in the mid- and high latitudes across North America and Eurasia. Ichinose et al.1 found that the maximum anthropogenic heat flux (AHF) in central Tokyo, Japan, was as high as 1,590 W/m2 in winter, resulting in warming to a maximum of 2.5 °C. Moreover, anthropogenic heat can affect wind speed because it reduces the stability of the boundary layer and enhances vertical mixing. In view of the effects of anthropogenic heat on climate at local and continental scales and the increasing consumption of energy worldwide, the potential significance of anthropogenic heat as it relates to global climate change over a long-term period should be further studied using techniques such as global climate models.

[1] https://www.nature.com/articles/s41597-019-0143-1

[2] https://en.wikipedia.org/wiki/World_energy_consumption#Elect...