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Who we are

We are pleased to introduce you to our company and share our vision, mission and values that guide us in the field of sustainable new construction. ASAC Green Gas is a division of A.S.A.C Group (A.S.A.C), a holding company that has been operating in the environmental, safety and land reclamation, and mineral water industries for decades. We are dedicated to the design, construction and operation of facilities that use green gas (biomethane) as a clean and sustainable energy source. We are proud to present ourselves as an innovative company in the fields of renewable energies and CO2-free biomethane production.

Our core values are sustainability, innovation and integrity. We believe that environmental sustainability must be integrated into every aspect of our operations. We are constantly looking for innovative solutions to improve energy efficiency, reduce wastes, and make the best use of natural resources.

Our Story

Tommaso Rossi, the President of A.S.A.C, gained years of experience in the relevant fields, since began in 1972. Before founding A.S.A.C., he served as Technical Director of environmental activities for SNAMPROGETTI S.p.A until 1994. Then, he founded several companies such as SIMAM S.p.A, SO.GE.IN S.r.l and INGENIA S.r.l, which were engaged in environmental protection through environmental risk assessments, safety, remediation of contaminated sites, and design and construction of water treatment plants, including with global service formula.

In 2023, following the corporate sale of SIMAM S.p.A, A.S.A.C started the development of the ASAC Green Gas project, with the aim of actively contributing to the transition to a more sustainable future by offering innovative energy solutions capable of reducing environmental impact and promote sustainable development. We are committed to providing environmentally friendly alternatives to traditional sources of energy, thereby contributing to the reduction of greenhouse gas emissions and to the adaptation to climate change.

ASAC group business organization

We avail the collaboration of experienced professionals, qualified engineers and technicians to ensure the delivery of innovative, safe and efficient facilities. Our team consists of passionate, committed and motivated people who share our vision of a sustainable future.

We are proud of our commitment to social responsibility and environmental sustainability. We strive to maintain long-term relationships with our customers, offering customized solutions to meet their specific needs. Our goal is to create value for our customers, for the community and for the environment in which we operate.

Other leading companies in different sectors such as SIMAM S.p.A, SO.GE.IN S.r.l, INGENIA S.r.l and NEREA S.p.a also operate within the A.S.A.C Group, which includesASAC Green Gas. SO.GE.IN S.r.l is active in the industrial, Oil & Gas, energy, chemical, petrochemical and metallurgical fields. SO.GE.IN. technicians are operating all around Italy to ensure complete coverage in all geographical areas. INGENIA S.r.l. is an engineering and consulting company in industrial safety and hygiene, training, development and research, as well as in city gas network engineering. Founded in 2013, its Headquarters are located in Senigallia, Marche.


Over the years, A.S.A.C. has developed skills and knowledge that brought it into contact with an Italian patent, registered by an academic spin-off that has never been industrially applied. Through its companies, A.S.A.C has verified, studied, developed and implemented a semi-industrial-scale pilot plant for the production of methane with no CO2 emissions to the atmosphere. This patent has been  tested by A.S.A.C. through a pilot plant, authorized under Art. 211 TUA (Testo Unico Ambientale), having the capacity of 4 tons/day that run for more than 2 years of operation. From this experience, by using different types of biomass, the desire to bring to the market, through ASAC Green Gas, a new and innovative technology in the design of biomethane production plants and in the conversion of existing plants arise.

We are excited to offer innovative renewable energy solutions and work toward a more sustainable future.

We invite you to explore our website to learn more about ASAC Green Gas, our expertise, the projects already completed and how we can help you in your transition to cleaner and more sustainable energy. We are excited to work with you to build a better future for everyone