C++ Energy Projects

pcm

3 2,039 9.1 C++

Intel® Performance Counter Monitor (Intel® PCM)

Project mention: CoreFreq, a CPU monitoring software frequencies, ratios, C-states | news.ycombinator.com | 2022-12-24

The Intel PCM suite does what you seem to be describing w/o a kernel module, and it uses nicely abstracted MSR accesses so that its portable to any OS.
https://github.com/intel/pcm
Units

1 115 5.8 C++

A run-time C++ library for working with units of measurement and conversions between them and with string representations of units and measurements (by LLNL)

Project mention: TIL the USA was supposed to adopt the metric system but the ship carrying the standardized meter and kilogram was hijacked by pirates in 1793 and the measurements never made it to the States | reddit.com/r/todayilearned | 2023-01-26

Yes I would download this code
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NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-01-26.