Photovoltaic self-generation and self-use of surplus electricity storage

Can solar energy storage systems improve self-consumption and self-sufficiency?

As energy storage systems are typically not installed with residential solar photovoltaic (PV) systems, any “excess” solar energy exceeding the house load remains unharvested or is exported to the grid. This paper introduces an approach towards a system design for improved PV self-consumption and self-sufficiency.

Can surplus PV generation be used to reduce energy consumption?

The self-consumption rate was increased by 17–41% and 21–37% in summer and winter, respectively, depending on the proposed scenarios. These results highlight the potential of this strategy in effectively leveraging surplus PV generation to meet the energy demands of the household while also reducing the costs associated with energy consumption.

Does a PV storage system optimize self-consumption and self-sufficiency?

In another paper , the self-consumption and the self-sufficiency for a supermarket in Germany are optimized, with sensitivity analyses of the main parameters in the PV storage system (cost, size, and interest rates).

What are the benefits of self-production of electricity from renewable sources?

The self-production of electricity from renewable sources for self-consumption generates immediate positive effects, such as the reduction of grid energy losses, the mitigation of congestion problems, and a reduced need for modernization of electrical infrastructures by integrating renewable distributed generation into the electricity system .

Can battery storage increase PV self-consumption and self-sufficiency?

After establishing the limits of thermal storage size, a significant impact on self-efficiency can be realised through battery storage. This study demonstrates the feasibility of using a polyvalent heat pump together with water storage tanks and, ultimately, batteries to increase PV self-consumption and self-sufficiency.

What is PV self-consumption?

They defined the PV self-consumption as the share of the total PV energy production consumed directly by the PV system owner and concluded that there are two options for improving self-consumption in homes, which are energy storage and load management.