2010 was a year of renewal, the year in which Valorsul and Resioeste merged into a single company. Following the approval of the decree-law on 15 June, we saw the birth of a new Valorsul on 20 July 2010, which has the concession to operate the sorting, selective collection, recovery and treatment system for solid urban waste in the Lisbon and Oeste regions, with the municipalities of Alcobaça, Alenquer, Amadora, Arruda dos Vinhos, Azambuja, Bombarral, Cadaval, Caldas da Rainha, Lisboa, Loures, Lourinhã, Nazaré, Óbidos, Odivelas, Peniche, Rio Maior, Sobral de Monte Agraço, Torres Vedras and Vila Franca de Xira as original users.

The Organic Treatment and Valorisation Plant (ETVO) is officially inaugurated by the Secretary of State for the Environment, Humberto Rosa.

The year 2002 was marked by the inauguration by the Minister for the Environment and Spatial Planning of the country's largest packaging sorting centre, which gave an important boost to recycling in Portugal. It was also in 2002 that Valorsul started the Ecovalor Programme, a co-financing programme for municipalities to exclusively support the school community - environmental education became one of the company's missions, which increased in supply and quality year after year.

The Energy Recovery Plant is officially inaugurated by the Minister for the Environment and Spatial Planning, José Sócrates. The Slag Treatment and Recovery Plant (ITVE), located in Mato da Cruz, was also inaugurated that year. It was also in 2000 that the Santa Iria de Azóia Urban Park (Loures) became available for the public to enjoy, and the former landfill gave way to 24 hectares of green and leisure area, in a sealing and recovery project financed by Valorsul.

The Energy Recovery Centre is entering its test phase and is starting to receive the municipal waste that was being sent to the Mato da Cruz Landfill.

In 1998, the Mato da Cruz landfill was inaugurated, where the municipal waste produced in Valorsul's area of operation was sent. This operational unit now receives around 2,000 tonnes of waste produced daily. This year also saw the start of monitoring programmes for the CVE's surroundings, which were carried out by independent entities and continue to this day. The Minister for the Environment, Elisa Ferreira, visits the construction site of the Energy Recovery Centre, which was to be the first incineration plant in Portugal. This year, the first group of employees to operate the plant at a North American centre was also trained. At Resioeste, the concession contract between the Portuguese state and Resioeste was approved and the waste delivery and reception contracts with the municipalities were signed.

In 1995, Valorsul signed a 25-year concession contract with the Ministry of the Environment, making it the company responsible for designing, building and managing all the facilities needed to treat municipal waste generated in its area. Despite many debates and meetings, Valorsul's plant divides opinion, but the shareholders are united and firm in their conviction to build an energy recovery plant in S. João da Talha.

Valorsul was founded on 16 September 1994, as a public limited company made up of seven shareholders: Parque Expo'98, SA, Empresa Geral de Fomento, SA, Lisbon City Council, Electricidade de Portugal, SA, Amadora City Council, Loures City Council and Vila Franca de Xira City Council. The aim, ambitious at the time, was to find a solution and a destination for the complex problem of the thousands of tonnes of municipal waste produced in the Greater Lisbon area.