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Essay On Energy Storage

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1.0 Introduction
The storage of Grid electricity has long been identified as having the potential to add great value and improve the efficiency of electrical power generation and consumption. Where and when Energy storage is possible, it allows load levelling/balancing and peak rate dispatch, contributes to better power reliability and quality and enables distributed power generation assets to adjust their output for the most economical use.
As the percentage of electricity generated from “green” but highly inconsistent renewable sources—such as solar or wind — increases, the availability of technology that allows us to store large amounts of electrical energy is becoming of increasing importance. One of such energy storage technologies that is showing great potential are electrochemical storage technologies- Battery Energy Storage systems (BESS). The potential application and benefit of battery storage can be seen on a limited scale in the lead-acid batteries, used in Uninterruptible Power Supplies (UPS), which is widely used to support critical electronics for short periods when there is power outage. However, these UPS batteries have relatively low energy densities, high lifecycle costs and utilize toxic materials.
There are many battery technologies available, such as lithium-ion, lead-acid, Nickel-Cadmium, Vanadium Redox-Flow, sodium-sulphur. But this report would be focusing on Redox-flow batteries, because they are the most promising, in their used in grid scale energy storage.

2.0 Battery Energy storage systems
2.1 Conventional batteries
Currently, conventional rechargeable batteries offer a simple and efficient way to store electricity, however, development and deployment to date has largely been directed towards trans...

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...s and risks during handling, storage, and use. Flow batteries electrolytes are also non-flammable and produces minimal or no emissions during operation. Of all the battery types, flow batteries are the most suited to complement renewable electricity sources, making them more effective and economical. [2]

2.3 Challenges of battery energy storage

Part of the challenge facing Battery energy storage development is the apparent immaturity of both the market and the technology. Most BES systems are still in the prototype or testing phase and there are very few orders and funding to encourage more research and development. The lack of adequate fund places Battery energy storage system a bit on the expensive. Another, challenge is that only very few government and institutions around the world have prioritised the integration of BESS into their energy future as it is.
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