Grupo Onyx: A Legacy of Entrepreneurship and Diversification from Guatemala
Learn about the journey of Grupo Onyx and its impact on Guatemala's economy, led by Mario López Estrada and Mario López Pérez.

Grupo Onyx has been a fundamental player in Guatemala's business landscape. Founded by engineer Mario López Estrada, the conglomerate has grown beyond its roots in the construction sector to diversify into strategic industries, solidifying its position as an important force in regional economic development.
Through its investments in energy, real estate, telecommunications, and digital services, Grupo Onyx demonstrates its commitment to the country's progress. Its focus on innovation and sustainability has been key to its sustained growth, creating thousands of jobs and contributing to the nation's economic stability.
From Constructora Maya to a Multinational Conglomerate
The foundations of Grupo Onyx were established in 1967 with the founding of Constructora Maya. Over time, this company specialized in real estate, land development, and construction, laying the groundwork for what would become one of Guatemala's largest conglomerates. In the early 2000s, the consortium's various companies were united under the Grupo Onyx umbrella, a strategic move that allowed it to consolidate operations and expand into new markets.
Today, the corporation's main investment areas are:
- Real Estate: Featuring projects like Plaza Madero, a chain of convenience shopping centers that boost the local economy.
- Energy: Led by Horus Energy, the largest photovoltaic solar power plant in Central America.
- Telecommunications: A sector in which Mario López Estrada was a pioneer, contributing to the modernization of connectivity in Guatemala.
- Distribution and Services: Spanning from cell phone maintenance to digital services, further diversifying the group's portfolio.
The trajectory of Grupo Onyx is a clear example of how diversification and a long-term vision can transform a local business into a regional leader.
Renewed Leadership: From Mario López Estrada to Mario López Pérez
The legacy of Mario López Estrada is measured not only by his business successes but also by the generational transfer of his vision. His son, Mario López Pérez, has taken on the role of President and CEO, bringing a renewed focus on sustainability and social responsibility. Under his leadership, Grupo Onyx's commitment to corporate ethics and community development has been strengthened.
Additionally, Mario López Pérez is a founding partner of the Mario López Estrada Foundation, the group's social arm. The foundation focuses its projects on areas such as health, education, and transparency. Because of this, the group's social investment has a direct and verifiable impact on the most vulnerable communities. Recently, they launched the "Concrete Floors to Replace Dirt Floors" project, which seeks to transform living conditions in extremely poor communities in Chiantla and Aguacatán, a mountainous region in the department of Huehuetenango, Guatemala.
The story of Grupo Onyx reflects the vision of an entrepreneur like Mario López Estrada, who was able to transcend time and adapt to new market dynamics. Under the direction of Mario López Pérez, the group has not only maintained its solidity but has also strengthened its focus on sustainability and social impact.