Extreme wind events are the biggest cause of failure and insurance claims for any PV plant, according to Thorsten Kray, Head of the Building Aerodynamics Department at Institut für Industrieaerodynamik GmbH, Aachen. For structural reasons, single-axis trackers are more prone to the issues than fixed-tilt structures. In this two-part series, pv magazine will examine the ways that wind impacts trackers and what EPCs and investors need to look out for, in addition to outlining a range of approaches from big tracker suppliers that were designed to mitigate wind-related damage.
National Thermal Power Corp. (NTPC), India’s largest energy conglomerate, has suffered a serious blow to its reputation after it failed to attract bids for its 1.2 GW solar project, despite multiple deadline extensions.
The National Solar Energy Federation of India has warned the Ministry of Power that PV developers may be deterred from participating in state tenders because distribution companies are still not issuing letters of credit as a payment security mechanism.
The plant will attract an investment of Rs 750 crore into the state, with Rs 500 crore coming from ReNew Power to set up 100 MW and Rs 250 crore from Shapoorji Pallonji for the remaining 50 MW.
The projects — solar, wind or a combination thereof — are expected to supply power for a minimum of six hours per day during periods of peak demand. The last date for bids is Sept. 17.
The winning developer will be able to use solar modules and cells of any origin for the plant, which will be built in Auraiya district, Uttar Pradesh. Bidding closes on Sept. 5.
Micro and mini grid-connected projects will also be considered. The projects—to be developed on ‘build-own-operate’ basis—can be set up anywhere in India for self-use or use by government entities at maximum fixed tariffs of Rs 3.50/kWh. Bidding will close on August 23.
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