To be eligible to participate in the competitive bidding process, the bidders are required to have a minimum average annual turnover of $605,575 in the last three financial years. The successful bidder must provide insurance for the solar module power output warranty to provide cover in case of insolvency of the solar module manufacturer. If the selected bidder cannot provide insurance, they can also submit a bank guarantee of 10 per cent of the contract value. The wattage output of the modules is required to be over 325 Wp or in the 5 W band only. The bid submission deadline is August 24, 2021.
The tender also states that the solar modules should have a warranty of a minimum of 10 years. The module degradation should not be less than 90 per cent at the end of 10 years and 80 percent at the end of 25 years. A minimum efficiency of 16.5 per cent is expected from the modules. The glass used for modules must possess high transmission, low iron, minimum thickness of 3.2mm, and bending less than 0.3 per cent. The back sheet used in the crystalline silicon-based modules must be 300 microns with a water vapor transmission rate of less than 2 g/m2 daily. The modules are expected to perform effectively in temperatures between -10° Celsius and 85° Celsius. They should also be able to withstand gusts up to 140kms per hour on the panel’s surface. Finally, the modules must be certified by the Bureau of Indian Standards.
Earlier this year, BHEL had also invited bids for 750 MW of monocrystalline silicon modules for the 500 MW Rewa Ultra Mega Solar Limited solar park in Madhya Pradesh.