Analysing the Role of Energy Storage in Building Integrated Photovoltaic System: A Techno-Economic Analysis

Peak demand is reduced through grid-connected PV solar and energy storage, extra power is sent back into the grid, and the annual consumer electricity cost is reduced. A techno-economic study of the Building Integrated Photovoltaic (BIPV) system was undertaken in this article, using the PV system without a battery as the basic case. By deploying adequate battery capacity, a typical Indian house with PV has been studied for determining yearly power bill reductions and economic indicators. Monthly grid power constraints are more economically sustainable than annual grid limits. As time-of-use rates (ToU tariffs) are used, yearly power bill reductions are much lower as compared to standard prices. As a result, the whole burden of reducing grid reliance rests on distributed generators and energy storage, rendering ToU economically unviable. As policy proposals for the sustainable integration of PV systems, the function of energy storage, distributed generators, and grid power restrictions have been recognized. A short-term strategy of high retail energy prices, combined with a long-term wholesale pricing policy, has been explored.