A new startup, CycloKinetics, has announced a product line of chemically engineered rocket and jet fuels that it says are as much as 32% more efficient that standard fuels.

CycloKinetics’ approach is to create “plug-in” fuels that can replace conventional fuels in various vehicles without requiring modifications to the craft or its engines. There’s nothing particularly wild or exotic about this, and no unobtanium-type elements are involved. It’s more a matter of changing the geometry of the hydrocarbon molecules that make up the fuel itself.

Conventional aviation fuels consist of linear and branched hydrocarbon molecules, which limits how much energy can be packed into a given volume. CycloKinetics instead engineers cycloparaffinic hydrocarbons – that is, ring-shaped molecular structures that pack more carbon and hydrogen atoms into the same space as would be occupied by conventional fuels.

The upshot is 32% more energy in the same volume as standard Jet A fuel. That means, for example, an aircraft capable of flying 1,500 nautical miles (1,726 miles, 2,778 km) on standard fuel could potentially exceed 1,950 nautical miles (2,244 miles, 3,611 km) using the new superfuel, while reconnaissance aircraft could remain on station up to 30% longer.

The company is also selling its version of RP-1, the kerosene fuel used for example by SpaceX’s Falcon 9 rocket.

It remains unclear whether it will be cost effective for rocket or airline companies to consider buying this fuel. For one, the extra cost to make it might outweigh the fuel savings. For another, it is unclear the company will be able to produce enough to meet the market. Nonetheless, the concept is intriguing, and could pay-off for this startup in the long run.