Watching baseball's first quadruple play was strange. Seeing Wal-Mart go green is stranger still.

 

First the baseball: The scene was a game of T-ball, where everyone bats every inning, regardless of the number of outs.

 

The bases were loaded when a line drive ended up in the glove of the pitcher. While he wondered how it got there, all the runners took off without tagging up. The pitcher ran to third, then second, then first.

 

We kept counting the number of outs and they did not add up. First in our heads: That doesn't make sense. Then on our hand: That's crazy. Then our other hand: It kept adding up to four outs.

 

It took us a while to believe what we saw right in front of us.

 

And now Wal-Mart Stores Inc., the original Black Hat, is going green. Or better said, sustainable. Let that sink in because it is true. Big time.

 

So much so that Treehugger.com says it "could end up being one of the biggest motivators to make truly 'green' products ever."

 

As in history of the world.

 

Wal-Mart has made believers out of not just the biggest environmental organizations in the world — like the Environmental Defense Fund and the World Wildlife Federation — but also Wal-Mart's suppliers.

 

It started five years ago when Wal-Mart announced three goals: 1) 100 percent renewable energy; 2) Zero waste; 3) Sustainable products.

 

The company’s stores have already gone sustainable on dozens of fronts from shipping to selling to storing to recycling. Last year, Wal-Mart saved 4.8 billion plastic shopping bags.

 

That's how they roll in Bentonville: Big.

 

Even the combined efforts of 8,400 stores with 2 million associates doing $400 billion in sales every year was not enough: Wal-Mart figured out 90 percent of its carbon was coming from its supply chain. So it reached down to all its 100,000 vendors — and their vendors and their vendors — and told them that reducing carbon footprints — reducing energy — will save money.

 

Everyone knows that is what Wal-Mart is all about.

 

"And vendors are listening," says Tom Rooney, CEO of SPG Solar in Novato, Calif., one of the largest solar installers in the country. "We are seeing renewed and intense interest in industrial- and commerical-scale solar because of Wal-Mart and Procter and Gamble and other companies are showing their suppliers how to change their shipping, packaging, storing, selling, heating, cooling, disposing, recycling and other practices to squeeze energy out of the supply chain and save money. And solar is a big part of that."

 

Not that many need much coaxing: Financial incentives for solar today are so strong that many companies are essentially getting free energy — and more — by buying a new solar array from the money they will save from lower energy bills. And having a big chunk left over.

 

Now on top of that, the largest companies in the world are saying solar and other renewables have to be a part of their supply chain. By some estimates, 1 in 3 dollars worldwide is associated with a company that does business with Wal-Mart. So, if you shift Wal-Mart and its suppliers, the global economy shifts with it, says R. Paul Herman at hipinvestor.com. Or as the New York Times puts it: "because of its size and power, Wal-Mart usually gets what it wants."

 

And Wal-Mart wants renewable energy.

 

Earlier this year, Wal-Mart sent its vendors a 15-part questionnaire to determine what their companies were doing to become more sustainable. Also leading the effort is Wal-Mart's "Sustainabilty Index."

 

Scholars from around the world are gathering at the universities of Arizona and Arkansas to create this new measure of the energy created — and wasted — during the life cycle of a product found at Wal-Mart.

 

It won't be ready for at least another year.

 

"But that doesn't matter," says Rooney. "No one is fighting Wal-Mart or complaining about the reporting that this new index requires. Just the opposite: They are racing to outdo each other, and surpass Wal-Mart's expectations. Right now. Not next year. "

 

And why not: In May, the world's largest consumer product company, Procter and Gamble, announced its own similar sustainability program for its vendors, joining IBM, GE and other corporate giants on the sustainability train.

 

The results are already showing up on the bottom line:

 

"Perhaps more than any other company, Wal-Mart has pursued this approach," said the Harvard Business Review of Wal-Mart's new vision of sustainability. "The payoffs are already showing up: One of the Sustainable Value Networks, tasked with fleet logistics, came up with a transportation strategy that improved efficiency by 38%, saving Wal-Mart more than $200 million annually and cutting its greenhouse gas emissions by 200,000 tons per year."

 

Wal-Mart: Not just for beating up anymore. Or maybe we are just seeing the world's first quintuple play.

 

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