In 2025, subsidies for the energy renovation of buildings remain an excellent opportunity to improve the efficiency of homes and communities, reduce energy consumption and increase the value of buildings. Here is an updated summary of the most important subsidies currently active in Spain, especially within the framework of the PREE programme and the European Next Generation funds.

Main programmes available

PREE Programme

The Energy Rehabilitation of Buildings Programme (PREE) aims to reduce energy consumption and pollutant emissions through actions such as:

  • Improvement of insulation in facades, roofs or floors.
  • Replacing air-conditioning systems with more efficient ones or with renewable sources.
  • Renovation of lighting installations in communal areas.

This programme is managed at regional level, so the calls for applications and deadlines may vary depending on the region.

PREE 5000 Programme

This is a variant of the previous one, focused on municipalities with less than 5,000 inhabitants. It seeks to promote energy rehabilitation in rural or less densely populated areas, also contributing to their revitalisation.

Next Generation EU Funds

These funds, provided by the European Union, cover between 40% and 80% of the total cost of energy refurbishment, depending on the level of savings achieved. In certain vulnerable cases, the subsidy can be up to 100%.

What actions are eligible?

The subsidies are aimed at projects that generate significant energy savings. Some of the most common actions include:

  • Thermal insulation of the envelope (facades, roofs, floors).
  • Renewal of boilers or air conditioning systems for more sustainable alternatives (heat pumps, aerothermal, biomass…).
  • Installation of solar thermal or photovoltaic panels.
  • Replacement of lighting fixtures for more efficient models.
  • Automation and energy control systems.

General requirements

To qualify for these grants, the following are normally required:

  • The building must have been constructed before 2007.
  • The works must achieve an energy improvement of at least 30%.
  • The work must be detailed in a technical project or justification report.

The work must not have been started before the formal application for aid.

How to apply for this aid?

The grants are managed by each autonomous community, so it is necessary to consult the official housing or energy portals of your community to find out:

  • The open calls for applications.
  • The application procedure.
  • The technical documentation required.
  • The deadlines and forms of justification.

These subsidies represent a real opportunity to make improvements that not only make buildings more sustainable, but also more comfortable and attractive to the market.

Altamira Constructora, as a company specialising in building work and refurbishment, encourages our clients to find out about these subsidies before starting any project, to make the most of the benefits available.