For 15 years, the California High-Speed Rail Authority and its backers have discussed, planned, studied and lobbied for the kind of fast trains seen elsewhere around the world.

For companies needing data security and backup, the Sacramento region boasts some of the safest and most affordable data centers in the West. It’s so desirable, in fact, that Twitter has joined Yahoo Inc., eBay Inc., Wells Fargo & Co. and a host of other Fortune 500 companies in storing its data in or near California’s capital.

In a year of job loss and company closures, Scott Blevins’ freight business is expanding, hiring and hauling in the cash.

An unemployed engineer and an e-waste recycler walk into a bar. The engineer takes the recycler’s electric bike for a spin. And, a year later, The Electric Bike Shop opens its doors in East Sacramento.

Once a U.S. Air Force base populated by concrete buildings and gun-toting soldiers, McClellan is now an eco-friendly business park home to a menagerie of green companies.

McClellan Jet Services is Sacramento’s one-stop shop for all things airplanes.

If you’ve ever had to plan an office move, or even live through one, consider the challenge of doing 10 to 20 at the same time. That’s the task facing architects, construction companies and interior designers when governments consolidate far-flung operations under a single roof.

Chris Huppe spent more than a dozen years working on better ways to use the green waste from his landscape maintenance company.

Charles Rieger is building a case for going green. As the executive director of the Solano Center for Business Innovation, the umbrella organization for the newly formed Solano Green Business Council, it’s Rieger’s job to plant the seeds for a greener economy.

If there is one thing a business owner hates, it is uncertainty. Planning for the future — or even managing the present — cannot effectively happen unless the person signing the checks knows the rules of the game. But when it comes to California’s efforts to reduce greenhouse gas emissions, uncertainty is about the only thing employers can count on right now.