An investigation has revealed that a significant number of rental properties owned by the Duchy of Cornwall, managed by Prince William, fail to meet minimum energy efficiency standards, with nearly 500 out of over 600 properties rated F or G.

This translates to about one in seven properties being classified in the lowest energy efficiency categories, which poses risks of fuel poverty for tenants.

The properties in question produce a staggering total of 1,596 tonnes of CO2 annually, more than double the average emissions, raising serious environmental concerns.

Since the implementation of the Minimum Energy Efficiency Standards (MEES) regulations, Prince William and his predecessor, King Charles III, have reportedly profited £91 million from these properties.

Investigations by 'Mirror' and 'Channel 4' indicate that the Duchy has rarely sought exemptions from energy efficiency regulations, often citing high costs for necessary improvements.

Tenants have reported precarious living conditions, including issues with mold and dampness, with some facing eviction for voicing complaints about their homes.

Despite Prince William's commitment to achieving climate neutrality for the Duchy by 2032, many rental units still do not meet basic standards, forcing tenants to rely on expensive heating methods.

The Duchy claims to have reduced carbon production by 300 tonnes over the past five years and aims for net-zero emissions by the end of 2032.

Campaigners argue that the Duchy is failing its tenants and are calling for government action to ensure that landlords meet basic housing standards.

Experts have criticized the Duchy's management, stating that properties should not be rented out until they comply with MEES regulations or have valid exemptions.

There is uncertainty regarding what Prince William knew about these issues, as the Duchy believes that long-term tenants may exempt properties from certain regulations.

In response to the findings, Prince William has promised to implement improvements to the properties managed by the Duchy of Cornwall.