KREDL floats tender for BESS in Pavagada Solar Park

The Karnataka Renewable Energy Development Limited (KREDL) is planning to set up a Battery Energy Storage System (BESS) of 250 megawatt (MW)/1100 MwH capacity along with a solar photovoltaic project of 250 MW capacity in Ryapte in Tumakuru district in the vicinity of Pavagada Solar Park.
This is the first BESS being set up in the solar park spread over 13,000 acres. It is being set up to supply peak power and optimise grid utilisation. This new project will come up in 1,000 acres in Annadanapura and Reddivarahalli villages in Tumakuru.
KREDL, which has called for the tender, will provide the land on lease to the developer for setting up the plant. The entire project will be developed under Tariff-Based Competitive Bidding on Build-Own-Operate (BOO) basis.
'The BESS is being set up as we want to utilise the energy generated during solar hours in non-solar hours and thereby optimise grid utilisation,' said Gaurav Gupta, Additional Chief Secretary, Energy Department. He further said that BESS, which is fairly a new concept, is being set up in different capacities at different projects.
The developer will also need to set up a transmission network with the primary objective of supplying Solar and BESS power to electricity supply companies (escoms). The projects need to be designed for interconnection with the Karnataka Solar Power Development Corporation Limited (KSPDCL) 220 kV lines.
'The BESS needs to be utilised for storing the energy generation from Solar PV during the grid constraint period, which may occur anytime during the solar generation hours, and it is mostly expected between the time blocks of 8:00 am and 4:00 pm on a daily basis. Further, the grid constraint period would differ on a month-to-month basis or seasonally (not necessarily between 8 a.m. and 4 p.m. on daily basis),' the tender document specifies.
The energy generated from the solar project which would not be evacuated from the plant on account of grid constraint (partial or full) shall be stored into the BESS. During partial evacuation of energy, it shall be injected into both the grid and the BESS parallely. In a year, at least 80% of gross generation of the solar plant should be stored in the BESS.
Earlier this year, Energy Minister K.J. George had said that while work is on to increase the generation capacity of the Pavagada Solar Park by another 2,000 MW, BESS of around 2,000 MW also will be set up for proper utilisation of solar power.

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