Delivering reliable 24x7 services is the primary objective of every large building for which uninterrupted power supply is essential. Diesel generating (DG) sets are commonly used in developing countries for power backup for all critical infrastructure. Owing to increasing pollution levels, most cities are banning the use of DG sets. There are many alternatives to DG sets such as gas turbines and hydrogen fuel cells but due to technological maturity, reliability, safety, and efficiency the best option presently is lithium-ion battery (LiB) based energy storage systems or BESS.
DG sets burn diesel and emit carbon dioxide, carbon monoxide, nitrogen oxides (NOx), and particulate matter (PM 2.5 and PM 10)) besides causing noise pollution. DG sets release harmful particles into the atmosphere and substantially reduce air quality in the neighborhood. Every litre of fuel burned in a DG set crates 0.73 kg of pure carbon and 2.6 kg of carbon dioxide. Battery Energy Storage System (BESS) is a rechargeable battery system that stores energy from the electric grid or any renewable energy sources and provides that energy back to the building when needed. The key components of a BESS is Lithium-ion Battery (LiB) and Battery Management Systems (BMS).
A BESS can be charged either from the grid or from solar rooftop photovoltaic (RTPV) systems installed on the building. While a typical DG set operates during the power outages which is few hours in a month, the BESS connected to the grid can support the grid 24x7 by providing frequency and voltage support and can be a great resource for renewable energy (RE) and electric vehicle (EV) integration with the electricity distribution grid.
With the present cost of diesel, one unit(kWh) of electricity produced from a DG Set in the range of 35-45 US Cents, whereas the cost of electricity from BESS will be less than half of that, even if BESS in charged with electricity bought from the grid at commercial tariff of US¢ 10~12/kWh.
Innovative business models can be introduced for replacement of DG sets with BESS which would be the fastest route to create distributed energy storage systems for the grid to build flexibility which is emerging as the key requirement for renewable energy integration with the grid.
The India Smart Grid Forum (ISGF) is a public private partnership initiative of Govt. of India with the mandate of accelerating smart grid deployments across the country. With 170+ members comprising of ministries, utilities, technology providers, academia and research, ISGF has evolved as a Think- Tank of global repute on Smart Energy and Smart Cities. Mandate of ISGF is to accelerate energy transition through clean energy, electric grid modernization and electric mobility; work with national and international agencies in standards development and help utilities, regulators and the Industry in technology selection, training and capacity building
The Global Smart Energy Federation (GSEF), formerly known as Global Smart Grid Federation (GSGF), is a global stakeholder organization committed to creating smarter, cleaner electrical systems around the world and is comprised of national smart grid associations, forward-looking utilities, and think tanks from around the globe working in the energy transition and clean transportation. GSEF brings together the intellectual capital of smart energy stakeholders from around the world to help member organizations initiate changes to their countries’ energy systems to enhance security, increase flexibility, reduce emissions, and maintain affordability, reliability, and accessibility to clean energy and promote clean transportation.
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