power-usage-report: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/power-usage-report - from package: fatrace

You may install the required package with command apt-get install {package}

Error in other languages:
power-usage-report: bevel nie gevind nie
power-usage-report: comandă negăsită
power-usage-report: comando não encontrado
power-usage-report: commande introuvable
power-usage-report: command not found
power-usage-report: käsku ei ole
power-usage-report: không tìm thấy lệnh
power-usage-report: komanda nerasta
power-usage-report: Kommando nicht gefunden.
power-usage-report: kommandot finns inte
power-usage-report: komut yok
power-usage-report: nie znaleziono polecenia
power-usage-report: níor aimsíodh an t-ordú
power-usage-report: no se encontró la orden
power-usage-report: no s'ha trobat l'ordre
power-usage-report: opdracht niet gevonden
power-usage-report: parancs nem található
power-usage-report: perintah tidak ditemukan
power-usage-report: príkaz nenájdený
power-usage-report: příkaz nenalezen
power-usage-report: команда не найдена
power-usage-report: командата не е открита
power-usage-report: 命令找不到
power-usage-report: コマンドが見つかりません