für meine Diplomarbeit würde ich gerne in einer Gleichung den Stromeinheitspreis darstellen:
\begin{equation}
 G_{0}=\,W_{el}~44,48\,\frac{ct}{kWh}  
\end{equation}
  
\begin{equation}
 G_{0}=\,W_{el}~44,48 \SI{1}{ct\per\kWh}
\end{equation}
 Gruß
\begin{equation}
 G_{0}=\,W_{el}~44,48\,\frac{ct}{kWh}  
\end{equation}
  
\begin{equation}
 G_{0}=\,W_{el}~44,48 \SI{1}{ct\per\kWh}
\end{equation}
 \begin{equation} 
 G_{0}=\,W_{\text{el}}~44,48\,\frac{\text{ct}}{\text{kWh}}
\end{equation} 
\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage[per=fraction,fraction=frac,stickyper]{siunitx}
\newunit{\ct}{ct}
\begin{document}
\begin{equation}
 G_{0}=\,W_{el}~44,48\,\frac{ct}{kWh}  
\end{equation}
 
\begin{equation}
 G_{0}=\,W_{el}~44,48 \SI{1}{\ct\per\kilo\watt\hour}
\end{equation} 
\end{document}