Potential benefits of Energy Storage Integration for Wind Energy in India
Wind energy in India shows tremendous potential with estimates varying from 50 GW to as high as 2000 GW. Utilizing this potential is however challenging. Wind is intermittent, unpredictable and may not coincide with the load. Electrical grid in India needs significant upgrades to utilize potential of renewable resources. In many parts of India wind farms lose as much as 15% of the output due to transmission congestions. At lower wind penetration (less than 10%) the conventional resources are capable of adjusting to wind fluctuations. As the share of wind energy keeps increasing it will become more challenging to manage the grid stability. With wind penetration greater than 20% it becomes imperative to find new solutions to absorb wind variability and achieve grid stability. Energy Storage System (ESS) provides one such solution!
Realizing the importance of ESS, India Energy Storage Alliance (IESA) is releasing the “Applications of Energy Storage for Wind Energy in India” report as part of its ongoing series of reports about various applications of ESS in India. The objective of this report is to provide key applications of ESS for wind integration in India. Some of the key applications of ESS for wind integration analyzed in this report are:
ü Reducing wind power forecasting errors
ü Minimize transmission issues:
ü Application for captive wind farms
ü Wind energy time shifting and arbitrage
ü Off grid applications
ESS makes wind power dispatchable thus reducing the impact of forecasting errors. ESS can reduce UI charges applicable by keeping the actual output within +/- 30%.
For wind farms facing potential curtailment, ESS can be charged to store the energy during curtailment and discharged when the transmission capacity is available. ESS can also be used to reduce transmission capex as well as charges. Industries which are subjected to frequent load shedding use DG as a back-up power resource. Wind integrated with ESS can economically replace or significantly reduce use of diesel. ESS can in essence turn wind farm to a peaker plant to sell energy during peak hours. Due to fast response of many storage technologies wind farms integrated with ESS can follow the load. ESS can also be used to integrate with wind in off-grid applications.
This report includes case studies based on data of wind farms and how ESS can resolve that issue with increase in return and profitability. IESA estimates a market potential of around 350 MW for a low growth case and a market potential of around 1 GW for a high growth case through 2020 as shown in the figure below:
India Energy Storage Alliance (IESA) was launched in 2012 to promote energy storage technologies and applications in India by creating awareness among various stakeholders to make the Indian industry and power sector more competitive and efficient. IESA is working towards providing insights to technology developers and system integrators on the policy landscape and business opportunities in India through interactions with key stakeholders. IESA – KPN (Knowledge Partner Network) is one of the sought steps, which was appreciated by various industries. For more about IESA, visit at http://www.indiaesa.info/
IESA is conducting a Webinar on ‘ESS integration with Wind Energy – India Perspective’ on 14th September 2013. To know more details about the webinar and registration visit http://www. Indiaesa.info