VERONA, Wis. -- It's all part of a growing trend: Big-box stores are creating green incentives to shop.

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It's a win-win for customers, the companies themselves and the state. There seems to be a bit of a movement to create a more environmentally-friendly box store, WISC-TV reported.

Last fall, Wal-Mart in Monona unveiled a new "green" store, with light sensors in the freezer sections and a system that uses recycled water to heat the building.

Now, Farm & Fleet in Verona is taking it a step further, going green, and saving green, too.

"It's the overall package, because it's the whole presentation. It's not just the building," said Jane Blain Gilbertson, executive vice president and co-owner of Blains Farm & Fleet.

To build in Verona, Farm & Fleet had to improve the appearance of its store. As designs developed, focus shifted to saving energy.

"This is completely new for us. As we went through this, we saw some things at a trade show that we went to. We were making changes on the fly as we were designing this to make it more environmentally friendly," said Neal Van Loo, Farm & Fleets director of engineering.

Some of the concepts are obvious. Three large 16-foot ceiling fans do the job 60 fans do elsewhere.

There are 161 GPS-linked skylights that use technology to optimize efficiency, and shut off electric lights automatically. The GPS will lock in on its location, and then the mirror will follow the sun and reflect off the sun all day, to get maximum light off of the sun light bouncing into the light chamber, and then reflecting it down into the building,

The lighting system will pay for itself in just five years, WISC-TV reported.

Behind the scenes, the auto service center will reuse motor oil to heat the garage, more than 120 mature trees removed during construction were replanted on site, and the parking lot sits atop fill made from an older building on site.

"We're updated. We're keeping current with the times, and we're not only energy-mindful, but it's a warm environment and shopping friendly, and we can't take it to the next generation," said Blain Gilbertson.

The entire building runs on a computer system that automatically monitors and regulates energy use.

State officials said the international code conference coming up in Minneapolis could be taking a look at energy codes in new buildings.

Right now, stores making these changes are doing so voluntarily, but required or not, businesses are hoping to save money in the long run.

Blains Farm & Fleet opens in Verona on Thursday morning.