Russia’s invasion of Ukraine was causing energy bills to rise to unprecedented levels in German households. While increasing gas and oil prices incentivize the switch to electric heating and mobility, electricity prices are also sharply increasing. For homeowners, integrated solutions for residential electricity generation, i.e., Photovoltaic (PV) systems, and consumption, i.e., battery, heat pump, and EV charger, enable independence from fossil fuels and rising electricity prices – and provide an opportunity to minimize carbon emissions.

The partnership is essential for both companies to achieve an efficient and sustainable energy future. By integrating Ostrom's dynamic tariffs, E3/DC is significantly expanding its customers' options and utilizing the potential of the increasingly volatile electricity market while paving the way for a sustainable, digitalized, and decentralized energy supply. Ostrom's dynamic tariff enables consumers to purchase energy when it is cheapest. This option is desirable for users of an E3/DC home power plant at times when solar radiation is low. "The partnership with E3/DC is a significant milestone for Ostrom and underlines our commitment to driving the energy transition through innovative solutions," says Ostrom co-founder Matthias Martensen. "Together, we offer our customers an optimized energy supply and the opportunity to actively participate in shaping a more sustainable future."

Dynamic electricity tariffs can significantly reduce purchasing costs in combination with the storage system and controllable consumers, such as the heat pump and the charging station for electric cars. Integrating the dynamic electricity tariff also contributes to the stability of the electricity grids and improves the utilization of renewable energies. When consumers base their electricity purchases on the exchange price, they use the supply during the most favorable hours. These are also the periods in which renewable sources generate much electricity. In addition, users of dynamic tariffs avoid purchasing electricity in critical phases - when the electricity supply is low and consumption is typically high. This balances out fluctuations in generation and consumption better and optimizes the stability of the electricity supply.

"With the integration of dynamic electricity tariffs, we are putting an important part of our 360° Autark concept into practice," emphasizes Dr. Andreas Piepenbrink, CEO of E3/DC, and Antonius Bronstering, Chief Energy Management Services & Marketplaces Officer at E3/DC. "In addition to the intelligent use of their electricity, our customers can use energy management to cover all other requirements in a targeted manner via favorable exchange prices." E3/DC believes that maximum self-sufficiency is achieved through software-supported interaction between the home power plant, the electric vehicle, and the electricity market - and leads to maximum independence from fossil fuel power plants and outdated energy management models.


* Real cost savings depend on the specific consumption profile and prevailing conditions. While the market price of electricity can vary significantly, customers are still required to pay network charges and levies. On average, under current pricing scenarios, obtaining electricity through a dynamic tariff during the season with little sunshine is expected to be 10 to 25 percent less expensive than with a standard electricity tariff.