Abstract
Extreme temperature events such as heatwaves are becoming increasingly severe and frequent because of climate change, posing significant challenges to public health and energy infrastructure. This study explored the impacts of extreme temperature events leading to heat-/cold waves on public health and energy consumption in Kazakhstan from 1959 to 2021. The most striking trends in heatwave-related indices emerged in the western and southwestern regions. Conversely, despite heightened coldwave intensity, a decline was noted in their frequency and number. The impact of heatwaves on various health conditions, notably consistent and statistically significant rises in all-cause and cardiovascular mortalities, was observed. Shifts in energy demand were also unveiled with a noticeable spike in cooling-degree days and a reduction in heating-degree days. The mean total energy consumption stood at 552 kWh across the country with an average annual energy generation of approximately 8.76 kWh. To gauge the environmental implications, the mean CO2 emissions were estimated at 464 kg per kWh for both heating and cooling purposes. With climate change set to escalate heatwaves, the need for comprehensive health planning was underscored to mitigate their adverse health impacts. Furthermore, transitioning from fossil fuels to green energy sources is crucial to reduce our environmental footprint.