Greenhouses in horticultural MV grids face a transition to meet their heat demand with sustainable heat sources; however, the effect of the transition on the network stress is unknown.
This research simulates the dispatch of greenhouses under 3 different transition scenarios: Full geothermal, Mixed commodity, and Full Power-to-heat. The dispatch control of the greenhouse is based on the day-ahead electricity prices, gas prices, and strategic position on other associated greenhouse markets. Network parameters of an MV grid case study with 29 greenhouses were calculated based on their power exchange. For the calculation, a numerical solver from another research was used. Network simulations show a transition from feed-in to consumption behaviour for all future scenarios. This behaviour change is associated with a decrease in CHP dispatch, which is strongest for the geothermal scenario. The P2H scenario mainly shows large single peak consumptions for the months with high heat demand caused by the dispatch of P2H assets at the same time instants. The mixed commodity scenario has the best voltage and current values of the three scenarios. This research highlights the importance of decentralized power generation by the CHP unit to compensate for the high electricity demand of the artificial lighting.