The Time-steps AG, founded in 1996, is a Swiss software company which is specialized in solutions for mathematical and statistical optimization. In its early years, Time-steps was mainly active in the areas of risk optimization of financial portfolios and thereby acquired several renowned Banks and Management Consultancies as its clients in Germany and Switzerland.

In 2003, Time-steps started the development of TS-Energy as an integrated platform for the optimization of energy portfolios. From the beginning, Time-steps applied principles of financial mathematics to problems of the energy industry. In particular, the stochastic dynamic programming on which TS-Energy is based upon leads to a clear competitive advantage for Time‑steps' clients. In the following years, Time-steps was able to attract all major Swiss energy providers as its clients.

In the beginning of 2012, Time-steps was acquired by PSI Energy Markets GmbH. Time-steps complements the comprehensive energy business solutions portfolio of PSI.