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With the ongoing transition towards renewable energies, EV charging becomes a significant element of a holistic smart energy ecosystem. EV batteries can be used as storage capacity supporting the grid during times of fluctuation in renewable energy supply. So called Vehicle-to-Home (V2H) use cases focus on local optimization behind-the-meter and require a very close interaction between EV charging and other consumers, such as local battery storages, photovoltaic (PV) systems or heat pumps. A core element for local optimization is the Home Energy Management System (HEMS) which monitors and balances demand and supply behind-the-meter with the goal of optimizing the loads. Different HEMS solutions are currently tested at P3’s Laboratory for Smart Charging and Energy Solutions (P3 Energy Lab) with focus on PV self-consumption and self-sufficiency capabilities. With this paper, P3 provides learnings about the actual effectiveness and performance of optimization capabilities for HEMS solutions in the German market with focus on PV-optimized charging of electric vehicles (EV). In addition, the benchmark results can help decision-makers from the energy and mobility industry to develop successful service offerings and select suitable partners.

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Lessons Learned from the Home Energy Management System (HEMS) Benchmark with Focus on PV-Optimized Charging

  • 会议论文

  • 发表日期：

    2025年

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  • Lukas Schriewer,
  • Florian Oest,
  • Michael Göttlicher,
  • Tobias Steggemann

摘要

With the ongoing transition towards renewable energies, EV charging becomes a significant element of a holistic smart energy ecosystem. EV batteries can be used as storage capacity supporting the grid during times of fluctuation in renewable energy supply. So called Vehicle-to-Home (V2H) use cases focus on local optimization behind-the-meter and require a very close interaction between EV charging and other consumers, such as local battery storages, photovoltaic (PV) systems or heat pumps. A core element for local optimization is the Home Energy Management System (HEMS) which monitors and balances demand and supply behind-the-meter with the goal of optimizing the loads. Different HEMS solutions are currently tested at P3’s Laboratory for Smart Charging and Energy Solutions (P3 Energy Lab) with focus on PV self-consumption and self-sufficiency capabilities. With this paper, P3 provides learnings about the actual effectiveness and performance of optimization capabilities for HEMS solutions in the German market with focus on PV-optimized charging of electric vehicles (EV). In addition, the benchmark results can help decision-makers from the energy and mobility industry to develop successful service offerings and select suitable partners.