Green Energy Corridor is a project for facilitating the integration of renewable energy into the national grid network. The project will help in evacuation of power from renewable energy projects to the load centres by creating inter- and intra-state transmission infrastructure. The intrastate network will feed the renewable energy to the respective state grids. The transmission corridors of the interstate network will connect major renewable energy pockets with the national grid. The project was commissioned in 2013 by the Ministry of New & Renewable Energy.
The project has been divided into inter- and intra-state levels for its implementation. The inter-state transmission corridor will be developed by the Power Grid Corporation of India Limited (PGCIL). The State Transmission Utilities will be responsible for setting up and strengthening the intra-state transmission networks.
The project is strengthening both the inter- and intra-state transmission systems by evacuating power from the renewable capacity addition in resource rich states of Andhra Pradesh, Gujarat, Himachal Pradesh, Karnataka, Maharashtra, Rajasthan, Madhya Pradesh and Tamil Nadu. They are also setting up Renewable Energy Management Centres (REMCs) and the control infrastructure. PGCIL is already implementing evacuation for inter-state transmission from 6 solar parks with a total capacity of 5750 MW. These include Ananthapuram (1500 MW), Pavagada (2000 MW), Rewa (750 MW), Bhadla-III (500 MW), Bhadla-IV (250 MW), Essel Saurya (750 MW). Tender has been issued for Banaskantha Solar Park (700 MW). Evacuation for Banaskantha Solar Park (700 MW) and MP solar park are also in the pipeline.
The move of increasing the scale and capacity of renewable energy and its integration poses many challenges which are as follows:
For strengthening the renewable energy evacuation network, the Governments of Germany and India have signed a Joint Declaration of Intent in 2013. Under this agreement, a concessional loan of up to 1 billion euros has been committed by Germany through KfW Development Bank. Besides, Deutsche Gesellschaft für Internationale Zusammenarbeit (GiZ) GmbH will be providing technical assistance for forecasting, balancing, market design and network management for the interstate and intrastate projects in India. For further details, please refer to https://www.giz.de/en/worldwide/15767.html
The Asian Development Bank is financing a portion (Part D) of the Green Energy Corridor project for developing high voltage (765 kilovolt (kV) and 400 kV) transmission lines, a 765/400kV substation, and other infrastructure to facilitate power transfer from the renewable energy-rich areas to other parts of the country. For details, refer to https://www.adb.org/sites/default/files/project-document/176509/44426-016-pam.pdf
The Green Energy Corridor will ensure seamless supply of interstate renewable energy from solar projects from states rich in such resources to the deficient areas.
India aims to source 20% of installed electric power capacity from renewable energy which will help the country in achieving 30% carbon reduction for its COP 21 international commitments. The strategic switch from carbon-based energy to renewable energy (decarbonization) will reduce strain on ecology by lower greenhouse emissions and abating over 170 million tonnes of CO2 over its life cycle.
REMCs are centres being established under the Green Energy Corridor projects to help in forecasting renewable energy power generation and demand. These centres will be coordinated with load dispatch centres to gather real-time information, as well as monitor and control smooth grid operation. The centres will have on-line Dynamic Security Assessment tools, single source information repository and coordination points for renewable energy penetration.
The Government of India has set an ambitious target of 175 GW of installed renewable energy capacities by 2022 which will include 100 GW from solar, 60 GW from wind, 10 GW from bio-power and 5 GW from small hydro-power sources. India aims to source 20% of installed electric power capacity from renewable energy which will help the country in achieving 30% carbon reduction for its COP 21 international commitments.