Solar energy product maker MEMC Electronic Materials says Taiwan's Tainergy Tech will pay it as much as $3.5 billion in a 10-year solar wafer supply deal.
MEMC Electronic Materials Inc. will supply wafers to Tainergy Tech Co. Ltd. on a take or pay basis and have the right to buy a 10 percent stake in Tainergy.
MEMC also says the sales volume of its 10-year wafer deal with Conergy has been cut to about $4 billion from between $7 billion and $8 billion.
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AP Business Writer Mike Obel in New York