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RETURN ON INVESTMENT FOR STORAGE BATTERIES BASED ON GRID INJECTION CHARGING POLICIES
Abstract
In these article, we discusses the analysis of the profitability of investments in energy storage batteries, in the context of injection policies in the grid in Romania. The study compares the compensation and energy sale regimes for prosumers and producers depending on the installed capacity, thus showing the impact of market prices and tax regulations on the return of investment (ROI). The case study has three scenarios, each with specific formulas for calculating ROI depending on the price of the stored energy according to the tax regulations. The scenarios focus on an industrial consumer in the textile field, with a continuous activity (24/7), who owns a photovoltaic power plant of 277.56 kWp an DC and 220.98 kW an AC. The annual consumption is 61.18 MWh, predominantly at night. The payback period (ROI) takes into account the implementation of a 215 kWh solution based on different fiscal scenarios, thus confirming the economic viability of the investment and the significant contribution to the reduction of operating costs in the long term.
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