In 2022, at the national level, investments for environmental protection represented 23.6% of the total expenses for environmental protection. At the national level, the investments of the public administration have the largest share in the total investments for environmental protection (40.3%), followed by the investments of non-specialized producers (33.9%) and those of specialized producers (25.8%).

Non-specialized producers registered the highest expenses for environmental protection in the "production and supply of electricity and thermal energy, gas and hot water" sector (33.9%), in the "extractive industry" sector (21.3%), and in the "extractive industry" sector (21.3%) "catchment, treatment and distribution of water" (17.2%).

In 2022, the largest investments for environmental protection were registered in the field of wastewater management, with a value of RON 2.3 billion (€460 million) at current prices.

In 2022, the highest expenses for environmental protection were recorded by the "waste management" field, with a value of RON 10.46 billion (€2.09 billion) current prices, followed by the "wastewater management" field, with RON 3.635 billion (€727 million) current prices.

The highest expenses for environmental protection were registered among producers specialized in the field of "waste management" with 95% of the expenses of this category of producers, representing 78.3% of the expenses for environmental protection at the national level for this environmental field.

These are followed by the expenses of non-specialized producers for the "wastewater management" field with 39.9% of the expenses of this category of producers, representing 56.3% of the expenses for environmental protection at the national level for this environmental field.