Solví, a Brazilian company and one of the largest players in the waste management sector, is investing R$ 1.3 billion ($250 million USD) to fuel its garbage collection trucks with biomethane derived from waste sources.

The company, which operates 60 landfills across Brazil, Argentina, and Chile (43 of which are in Brazil), is focusing on its largest asset: the Caieiras landfill. Located 30 kilometers from São Paulo and ranked as the third largest in the world, the site will be repurposed to produce fuel for Solví's own truck fleet.

Out of the announced R$ 1.3 billion, R$ 800 million was raised via Eco Invest, secured through loans from Itaú and Bradesco. These funds are earmarked for expanding the capacity of the Caieiras landfill and building new biomethane plants.

The remaining R$ 500 million was financed in partnership with the Brazilian Development Bank (BNDES) through Solví's subsidiary, Loga, which handles waste collection for more than half of the city of São Paulo. This investment is focused on acquiring trucks capable of running on biomethane. The full project is estimated to be operational by 2029.

A key initiative within the project is the gradual replacement of the current diesel truck fleet with vehicles powered by renewable gas.

“Our goal is for Loga's fleet to be 100% powered by biomethane produced in Caieiras,” said Frederico Guimarães, Solví's Chief Financial Officer to Capital Reset.

A Key Player in São Paulo's Energy Transition

The Solví Caieiras landfill is an integral part of São Paulo’s broader energy transition strategy. Recently, in May 2026, the Public Services Regulatory Agency of the State of São Paulo (Arsesp) approved the connection of the Caieiras plant to the piped gas distribution network operated by Comgás, which supplies gas to over 177 municipalities in the state.

Currently, the plant produces 67,000 m³ of biomethane per day, which is distributed via compressed natural gas (CNG) trucks. With the upcoming interconnection to the Comgás network, the company expects to gradually expand its biofuel production:

  • 2027: The first phase of expansion is expected to add 110,000 m³/day to the current capacity.
  • 2028: Production could reach approximately 220,000 m³/day.
  • 2030: The ultimate goal is to achieve an output of roughly 400,000 m³/day.

This integration will increase the blend of renewable gas entering the state's existing natural gas infrastructure, reducing reliance on fossil fuels.

Caieiras will be the fourth biomethane plant connected to São Paulo's gas distribution network and has the potential to become its largest. To date, the following plants have been connected to the grid:

  • Santa Cruz Plant (Américo Brasiliense): 75,000 m³/day capacity.
  • Costa Pinto Plant (Piracicaba): 85,000 m³/day capacity.
  • Paulínia Landfill: 225,000 m³/day capacity.