The market for energy management is currently growing rapidly. As a result of the trend towards digitisation and government support programs, such as special equalisation schemes and peak balancing, more and more small and medium-sized enterprises (SMEs) in Germany are becoming involved in energy management. The solution approaches range from a simple visualization of the energy consumption to automation, and all the way up to a certified energy management system. The consistent energy data collection is a prerequisite, in order to introduce an effective energy management in the company. The collection of all relevant energy data plays an important role for the improvement of energy consumption. The collection and analysis of the energy data can be submitted for the so-called peak balancing in accordance with § 55 Energy Tax Act and § 10 Electricity Tax Act. This allows companies to benefit from tax advantages and also save electricity tax.