A study by sustainability thinktank The Energy and Resources Institute (TERI) has calculated that India’s water reservoirs have 18,000 sq. km of area with the potential to host 280 GW of floating solar power generation capacity.
The report calculated the floating solar potential on the basis of 30% of the water surface area of the country’s medium and large reservoirs.
According to the tool, the greatest potential lies in Maharashtra, where 57,891 MW of electricity can be generated from floating solar over 3173 sq. km of water surface area in reservoirs.
TERI Senior Director-Renewable Energy Technologies Dr Ashvini Kumar said, “This report is an excellent initiative opening up alternatives for solar capacity additions. Preliminary data analysis indicates a huge potential of 280 GW with a certain coverage of water surface area. Maharashtra, Karnataka and Madhya Pradesh are the top three states in terms of potential for installations of floating solar PV.”
Director General Dr Ajay Mathur added, “Floating Solar PV could be a potential option for accelerating solar power deployment in the country, which would ultimately help in achieving NDC goals. It is time to look for bringing a conducive policy framework to encourage tapping this potential.”
Silver lining amid ‘ground’ reality
At present, ground-based installations form 93.1% of India’s grid-connected solar PV sector. The installation cost of utility-scale solar in the country has dropped by 84% between 2010 and 2018, making India the country with the lowest installation cost for utility-scale solar PVs.
“However, solar PV deployment is quite land intensive and scaling up projects requires large chunks of contiguous land parcels, which has its own set of challenges,” stated TERI report.
The report recommends that alternatives such as floating solar need to be explored and established for India to stay on track to meet the national targets for solar capacity additions.
“It is estimated that the global annual capacity addition from floating solar may rise from the 1.314 GWp in 2018 to 4.6 GWp by 2022. Presently, China is the leading international market followed by Japan and South Korea for floating solar. India also has very bright prospects to develop floating solar projects due to availability of large water bodies in the country”—stated the report.
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