I have posted same thing on debian user forums, and linking that so as to reduce duplication
[url]https://forums.debian.net/viewtopic.php?t=154875[/url]

I will summarise a little, there is an increase in power usage going from kernel 5.10.x to something newer (have tried many of them between 5.18.x to 6.3.x), and since these tests were done on kernels from many sources, it seems an upstream thing, On newer kernels, if we set /sys/devices/system/cpu/intel_pstate/status to active (default by kernel), then cpu freq is almost stuck to 2GHz, if we set it to passive, it goes to 0.4GHz and increases when needed, in either cases the power usage is not decreased, and is higher that that achieved in older kernel, where pstate works thee best and scaling happens as it is expected to be, sometimes evenwithout tlp installed/enabled (this is a newer observation after my original post after some tweaking and testing), i have also tested all other cpu scaling driver also with newer kernel, and acpi_cpufreq gave better scaling whereas intel_cpufreq (intel_pstate in passive) got least power, i have almost no clue on where to begin fixing this and any help is appreciated (if output of some command is required, kindly check the refered debian user forum post)

Thank you in advance, and please forgive my spelling and grammatical mistakes, and if this is a duplicate issue(which may or may not have been resolved), i only search for a few words, intel pstate, cpu scaling, power draw, and did  not read many. i also apologize if this is not an upstream thing, and will post somewhere