Gujarat Urja Vikas Nigam Ltd (GUVNL) has invited proposals to set up 500 MW of grid-connected renewable power projects anywhere in Gujarat. To be set up on a ‘build-own-operate’ basis, the projects must be augmented with energy storage systems to ensure power supply during peak hours.
GUVNL may enter into a 25-year power purchase agreement (PPA) with the selected developers. The applicable tariff under the PPA shall comprise peak and off-peak tariffs and shall be fixed for the entire PPA term. The energy supplied during the off-peak hours shall be eligible for a flat tariff payment of INR 2.29 ($0.029)/kWh. The price for the energy supplied during peak hours shall be discovered through an e-reverse auction.
The developer shall deploy a solar, wind, or wind-solar power project with an energy storage systems of a minimum ‘X/2’ MWh of energy rating, where ‘X’ is the contracted project capacity as per the PPA. For example, in case the contracted project capacity is 100 MW, the minimum energy rating of the energy storage system installed shall be 50 MWh.
Projects under construction and not having any PPA with existing buyers shall also be eligible under this RFS.
A single developer must bid for a minimum of 50 MW in case of solar and hybrid wind-solar projects with the co-located energy storage system. The minimum bid capacity for wind power developers is 25 MW.
“The developers can opt for connectivity at state transmission utility (STU) or central transmission utility (CTU) sub-station. RE projects will also be allowed to be set up in the existing wind farm which is already connected to the grid subject to availability of spare capacity for RE integration at corresponding GETCO/CTU substation,” states the tender document.
The commissioning timeline for the wind-solar hybrid project with an energy storage system is 24 months from the signing of the PPA. Wind or solar projects with energy storage system must be commissioned within 18 months from the PPA signing.
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