There's an energy revolution taking place, and the pace of the revolution is accelerating. It's entirely possible that the way our world is powered 10 years from now will be vastly different from the way it's powered today.

As our energy expert Travis Hoium has pointed out, the price of natural gas is rigged to stay low for the foreseeable future. That's bad news for natural gas extractors.

Just last month,Chesapeake Energy (NYS:CHK) , one of the country's largest natural gas players, announced that it will cut back on production. By doing so, it's hoping to minimize the supply glut that's plunged prices to record lows.

But one sector's pain is often another's gain, and that's certainly the case right now. With the cost of natural gas falling and the price of oil rising, the financial incentive to develop machines that can run solely on natural gas has increased exponentially.

That's great news for a couple of companies that made some huge announcements last week. All of these companies stand to benefit from a conversion from petroleum-based fuel to natural gas.

First announcement: Feb. 1
Last Wednesday,Navistar (NYS:NAV) CEO Dan Houston appeared on CNBC'sSquawk Box with Clean Energy Fuels (NAS:CLNE) board member and energy guru T. Boone Pickens. Navistar is an international trucking company, while Clean Energy is focused on building out the infrastructure of natural gas filling stations in North America.

The two announced a partnership whose goal is to "provide customers with a sustainable, commercially viable solution for adding natural gas-powered trucks to their fleets." In other words, Navistar wants to start pumping out natural gas trucks, and Clean Energy is going to help it get there.

Citing incredible demand for such trucks, Houston said he hoped to ramp up production and start offering them up in as little as six months. Pickens was quick to point out that the switchover would have three huge advantages over standard diesel trucks: Natural gas is $1.50 per gallon cheaper -- and 30% cleaner -- than petroleum-based fuel, and it doesn't have to be sourced from the Middle East.

Time will tell whether this partnership is able to bear fruit as quickly as they claim, but such confidence is a clear indicator that the financial benefits of natural gas are at a tipping point.

Second announcement: Feb. 3
While many may have cheered the Navistar/Clean Energy partnership, investors in Westport Innovations (NAS:WPRT) weren't happy at all. Before Wednesday, shareholders of Westport felt safe knowing their company was one of the few that had been able to engineer a practical engine that could run solely on natural gas.

With Navistar's announcement, it seemed like other industry players were going to be ganging up and moving in on their turf, and fast. The market took notice and sent Westport's shares plunging on Thursday afternoon.

But after the market closed on Friday, the story got interesting. Instead of developing its own natural gas engines, Navistar announced that it "will offer the Cummins Westport ISL G [engine] in the International TranStar and WorkStar trucks."

In other words, Navistar's not developing a new engine at all. It'll be offering the engines that Westport engineers and Cummins (NYS:CMI) manufactures -- as part of the Cummins Westport partnership -- in its trucking fleet.

What it all means
As I said, it remains to be seen exactly how this will all pan out, but this news is certainly a boon for all four companies involved.

If demand really is as high as Houston made it sound, that could mean a lot of new purchases for Navistar. New purchases for Navistar necessarily equates to a steep increase in engine orders for Cummins and Westport. It also means that there will undoubtedly be more natural gas trucks out on the road that rely on Clean Energy's fueling stations to help them move their products from coast to coast.