About Us

About Greenstar Group LLC

Greenstar Group is a US company formed in 2023 by the owners of Harp Group and their partners to provide a variety of solutions to divert organic material going to landfill. ​

It has over 20 years of experience in dealing with organic matter and other waste streams around the world.​

Its main technologies are the Harp Biodigester and agriculture and food waste Anaerobic Digestion plants.​

It has over 100 installed projects around the world.​

We provide real solutions to real problems.​

Food waste.​

Agriculture waste.​

Animal manures.​

Sludge wastes.​

All done in a carbon-negative way.​