The use of photovoltaic systems with batteries for energy storage was the solution found by Neoenergia to further reduce the costs of charitable health units in the states of Bahia and Pernambuco.
Managed by Obras Sociais Irmã Dulce, the HSA (Hospital Santo Antônio), in Salvador (BA), and the HCP (Hospital de Câncer de Pernambuco), in Recife (PE), are already served by the photovoltaic source, coming from panels installed by the company.
Os BESS (Battery Energy Storage System) systems are designed to reduce consumption during peak hours. Together, the investments total R$10,5 million and benefit institutions that provide more than 3,5 million services per year.
The batteries will be charged during times of lowest cost and consumption in hospitals (early morning, for example) and dispatched during the peak consumption period of the SIN (National Interconnected System), between late afternoon and early evening on weekdays. The forecast is that the two health units in the Northeast will save approximately R$2 million annually in electricity costs.
At the hospital in Pernambuco, R$3,5 million was invested so that the new storage system would be capable of meeting 80% of the unit's energy demand during peak hours, enabling a reduction of up to 400 kW in energy demand during this period and annual savings of around R$600 thousand on the electricity bill.
With initiatives such as the installation of the solar plant and now the installation of the lithium-ion battery, we will be able to significantly reduce our energy costs, which will allow us to invest even more in direct patient care,” highlights the general superintendent of HCP, Sidney Neves. In Salvador, Neoenergia Coelba’s donations total R$7 million in investments made possible by the distributor’s Energy Efficiency Program. The installation of the solar plant will supply approximately 15% of the hospital’s energy consumption demand.
The battery system is capable of meeting 70% of the hospital's demand during peak hours, significantly reducing energy costs during peak periods. The project will allow the hospital to save 1.050 MWh per year and reduce peak energy demand by an average of 600 kW, resulting in annual savings on the electricity bill estimated at R$1,4 million.
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