Decarbonization of industry is gaining in significance. While increasing energy efficiency and decreasing process-related emissions are well-established approaches showing significant effects, integrating electricity from variable renewable sources with (often abundant) commercial energy flexibility is widely overlooked in practice. Flexible electricity tariffs are a crucial component to close this gap, allowing for an economically attractive use of flexibility potential by industrial enterprises and electricity providers. In this article, we examine three core models of flexible electricity tariffs regarding their practical applications.