-They do not seem to continuously monitor but they do have "Ongoing internal communication and training sessions" and contracts to make sure their suppliers comply with modern slavery laws"
pg. 7
"Additionally, Iberdrola is working on different avenues to minimize this risk, including the possibility of carrying out audits and the study of component traceability mechanisms, as well as participating in the sector initiatives."
pg. 8
"New suppliers and contractors continue to follow a prequalification due diligence process which assesses many elements including risks associated with human rights within their operations and supply chain, particularly those who operate in high risk countries and sectors."