I. – All real estate, whether built or unbuilt, must be taxed in the commune in which it is located.
II. – However, for the basis of assessment of property tax on built properties, the rental value of the motive power of waterfalls and their facilities used by licensed hydraulic companies or with a power greater than 500 kilowatts is divided between the communes in whose territory the watercourses used flow or civil engineering works exist, taking into account the size of the latter, the possible existence of water reservoirs and the average hydraulic power that has become unavailable within each municipality as a result of the plant. The percentages fixing this distribution are determined by the authorisation or concession deed.
The method of determining the percentages provided for in the first paragraph, as well as the conditions of application of this paragraph, are fixed by decree issued on the proposal of the Minister of the Economy and Finance, the Minister of the Interior and the Minister of Industry (1).