Recapping the big headlines: Solar, steel and payments

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Solar stocks surge

Solar stocks are up big Wednesday after Congressional leaders agreed to extend a 30 percent investment tax credit through 2019.

Renewable energy companies, Solar City, First Solar and Sun Edison, all jumped on the news.

The bill still needs passage by the House of Representatives, and subsequent approval from the senate.

"We commend members of Congress in both parties for taking this bold step and we look forward to delivering on the promise that this policy now offers all Americans for clean, affordable and reliable energy," said Rhone Resch, ceo of the Solar Energy Industries Association in a statement.

Nucor trims guidance

Nucor shares dropped nearly five percent after the Charlotte-based steel comapny provided a bleaker than expected profit outlook.

Nucor blamed the deteriorating steel market on weak demand, oversupply, falling prices and high import levels in the United States.

The one exception was the automotive market, which Nucor cited as "strong."

Payments ring up a deal

Payment technology company Global Payments agreed to acquire smaller rival Heartland Payment Systems for $4.3 billion in cash and stock

Global Payments, the world's sixth largest card processing middleman, is expected to use the buyout to boost its reach among small and midsize merchants worldwide.

Shares of the Atlanta-based company have climbed 77 percent since the beginning of the year, while shares of Princeton, NJ based Heartland have appreciated 57 percent over the same period.