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When registration in the IAE for photovoltaic energy production is required

The Directorate General of Taxes (DGT) has issued a relevant criterion for renewable energy developers and operators regarding the precise moment when registration in the Economic Activities Tax (IAE) must be formalized when the activity consists of photovoltaic energy production.

What the DGT has resolved

The query concerned whether registration in the IAE should take place at the moment construction work on the facility begins. After analyzing the regulations, specifically the Revised Text of the Law Regulating Local Treasuries, the binding body has resolved the following:

  • For the photovoltaic energy production activity, corresponding to heading 151.4 of the IAE, registration and the start of taxation must take place when the production of energy effectively begins.
  • Previous phases, such as project preparation, obtaining licenses and permits, or the construction of the facility itself, do not imply the start of the economic activity and, therefore, the duty to pay this tax.

What this means for you

This criterion establishes a clear distinction between the preparation phases and the exploitation phase. If you are developing a solar energy project, the costs and time invested in engineering, the administrative management of permits, or the execution of civil works do not trigger the obligation to register in the IAE for energy production. The tax obligation arises only when the plant is capable of generating energy and this begins to be produced in a real manner.

What you should do

It is essential to rigorously monitor the project schedule to identify the exact moment when the facility moves from the construction phase to the effective production phase. This milestone will mark the start of the obligation to register under heading 151.4. Since each project presents technical and administrative particularities, it is necessary to assess each case to ensure that registration is carried out at the correct time and to avoid possible contingencies with the local administration.

Frequently asked questions

Should I register in the IAE when the solar plant construction begins?
No, the construction of the facility does not constitute the start of the economic activity for this tax.
Which activities do not imply the start of taxation in the IAE?
Project preparation, obtaining permits, and infrastructure construction do not trigger registration.
Official binding ruling V0870-25
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