<Li> Assured Power Purchase Agreement (PPA): The power - distribution and - purchase companies owned by state and central governments guarantee the purchase of solar PV power when produced during daylight . The PPAs offer a price equal to the peaking power on demand for the solar power (secondary power or negative load) and an intermittent energy source on a daily basis . </Li> <P> The 2016 manufacturing capacity of solar cells and solar modules in India was 1,212 MW and 5,620 MW, respectively . Except for crystalline silicon wafers or cadmium telluride photovoltaics or Float - zone silicon, nearly 80 percent of solar - panel weight is flat glass . One hundred to 150 tons of flat glass is used to manufacture a one - MW solar panel . Low - iron flat or float glass is manufactured from soda ash and iron - free silica . Soda - ash manufacturing from common salt is an energy - intensive process if it is not extracted from soda lakes or glasswort cultivation in alkali soil . To increase installation of photovoltaic solar - power plants, the production of flat glass and its raw materials must expand commensurately to eliminate supply constraints or future imports . </P> <P> For utility scale solar projects, top solar module suppliers in 2016 - 17 were: Trina Solar, JA Solar, Canadian Solar, Risen, Hanwha and GCL Poly . For rooftop solar projects, international companies with the largest market share in the Indian market were: Trina Solar, Canadian Solar, Renesola, REC Solar and Jinko Solar . Similarly, top Indian suppliers were: Vikram Solar, Waaree, Adani, Emmvee and Jakson . </P>

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