The Institute of Climate Change and Environmental Services Regulation (Acre) is responsible for establishing the rules for Acre State's Environmental Service Incentives System (SISA). It is administratively and financially independent from, but under the supervision of, Acre's Secretariat of the Environment (SEMA).
The Institute regulates SISA to guarantee its scientific and technical integrity. It is responsible for approving environmental services, project methodologies and action plans presented by the Environmental Services Development Company for the state, and for registering these projects. It also validates and verifies emissions reductions by issuing certificates, and produces and registers other ecosystem products and services.