Alternative-fuel vehicle modifier Greenkraft, Inc. estimates that it has made over $1 million in new revenue in 2017, the company announced.

The revenue was achieved through Greenkraft’s three major product lines, including trucks, conversion systems, and engines. The company offers alternatives to diesel fuel trucks, especially those from 19,500 to 33,000 GVW. The company also claims that their cabovers offer enhanced maneuverability due to their forward cabin design.

The company’s conversion systems can take existing truck models and convert them so they can run on compressed natural gas (CNG) or propane autogas (LPG). Greenkraft also has a product line that repowers tucks with different fuel options and engines.