{
  config,
  lib,
  vars,
  pkgs,
  ...
}:
{
  powerManagement.powertop.enable = true; # enable powertop auto tuning on startup.
  networking.networkmanager.wifi.powersave = true;

  services.system76-scheduler.settings.cfsProfiles.enable = true; # Better scheduling for CPU cycles - thanks System76!!!
  services.thermald.enable = true; # Enable thermald, the temperature management daemon. (only necessary if on Intel CPUs)
  services.power-profiles-daemon.enable = false; # Disable GNOMEs power management
  services.tlp = {
    enable = true; # Enable TLP (better than gnomes internal power manager)
    settings = {
      CPU_BOOST_ON_AC = 1;
      CPU_BOOST_ON_BAT = 1;
      CPU_HWP_DYN_BOOST_ON_AC = 1;
      CPU_HWP_DYN_BOOST_ON_BAT = 1;
      CPU_SCALING_GOVERNOR_ON_AC = "performance";
      CPU_SCALING_GOVERNOR_ON_BAT = "powersave";
      CPU_ENERGY_PERF_POLICY_ON_AC = "performance";
      CPU_ENERGY_PERF_POLICY_ON_BAT = "balance_power";
      PLATFORM_PROFILE_ON_AC = "performance";
      PLATFORM_PROFILE_ON_BAT = "balanced";
      START_CHARGE_THRESH_BAT0 = 75;
      STOP_CHARGE_THRESH_BAT0 = 81;
    };
  };

  environment.systemPackages = with pkgs; [
    powertop
  ];
  programs.light.enable = true;
 

  powerManagement = {
    enable = true;
    cpuFreqGovernor = "schedutil";
  };

  services.auto-cpufreq.enable = true;
  services.auto-cpufreq.settings = {
    battery = {
      governor = "powersave";
      turbo = "never";
    };
    charger = {
      governor = "performance";
      turbo = "auto";
    };
  };
}