Ente Regional de la Energía de Castilla y León (EREN)

EREN, Ente Regional de la Energía de Castilla y León, was founded in 1996 (Law 7/1996) by the regional government and in the framework of the Save Programme, as an energy management organism at regional level, aimed to develop the most appropriate regional energy policy, always following the guidelines established by the European Union’s energy policy, on the basis of its main three principles: security of energy supply; competitiveness and, environmental protection.

The European partnership was established with ARELVT-Agencia Regional de Energia de Lisboa e Vale do Tejo (Portugal) and Skane Energy Agency (Sweden).

EREN was established as a tool for the Castilla y León’s economic and social representatives of facing up to these questions related to the SME’s and citizens energy efficiency, at the same moment promoting the renewable energies use and the energy saving endefficiency and, developing the region great energy potential, always taking into the best consideration theenvironmental balance, contributing to the regional sustainable development.

The organisation is composed by a Board of Administration, an Advisory Committee and a Managing Director, which conduct and report the actions developed by EREN as well as its internal functioning, make up by a high specialised and qualified staff divided into three main departments: Energy Saving and Efficiency, Renewable Energies and, External Relations, Training and Education Department.


Actions carried out by EREN in the energy field are focused on the promotion of the energy saving and the exploitation of renewable energy sources, promoting the regional companies competitiveness and the citizens quality of life, what contributes direct1y to the global economic development of the region.

This is way EREN implements activities and designs initiatives in the following areas:

Energy Planning

  • Developement of the main actions identified by the Regional Energy Plan (PERCYL):
  • Development of the Energy Saving, Substitution, Cogeneration and Renewable Energies Programme (PASCER);
  • Activities aimed to promote the energy saving and efficiency in all activity sectors;
  • Dissemination activities on the importance of increasing the regional environmental conditions through an optimal renewable energies exploitation.

Energy Efficiency

  • Elaboration and implementation of a Castilla y León Energy Saving and Efficiency Plan, addressed to companies, SME, public buildings and housing owners;
  • Promotion of processes and more efficient technologies for transformation and energy usage in the industrial, residential and services sectors;
  • Energy audits: in the different sectors (industries, hospitals, hotels, schools, housings) in order to promote possible solutions implying an optimal energy saving and efficiency
  • Elaboration and implementation of an “Energy Audits Programme in Castilla y León”;
  • Building Certifications in the different activity sectors;
  • Processes of fuel substitution in public transports using alternative ones.

Renewable Energies
Activities aimed to promote the development of the Castilla y Leon high potential of renewable energy sources in all its technical areas: hydropower, biomass, wind energy, solar thermal energy, solar photovoltaics and geothermical energy. EREN will promote projects all around the region, implying local and regional entities, looking for the optimal impact in the local economy, increasing the employment and the quality of life in those localities where the projects are implemented.

Consulting and Advisory Actions

  • Administrative and technical reports;
  • Participating and assisting in working groups at national or regional level dealing with energy matters;
  • Legislation proposals.

Programmes management and co-operation

  • Promotion, assistance, management, follow up and participation in European Union, National and Regional energy programmes and initiatives;
  • Co-operation with international, national, regional and local institutions in the energy fields to get the best and more efficient results;
  • Collaboration in energy networks;
  • Establishment of co-operation agreements with universities and other public and private entities to develop joint actions on different energy matters.

Information Dissemination and Training

  • Collection of energy data, elaboration and publication of a Bulletin on Energy Statistic in Castilla y León;
  • Elaboration of periodical regional energy studies about the consumption evolution in all activities sectors;
  • Public Reports and recommendations for a more rational use of energy;
  • Seminars, workshops and public courses on different aspects of saving and energy efficiency aimed to both a general public and a most specific sectors;
  • Dissemination campaign on a better use of energy at a regional level, using the media;
  • Organisation of joint dissemination activities on energy efficiency and renewable energies with other regional energy agencies, in national and international context, especially with the EREN partner in this project, the regional energy agency on Lisboa e Vale do Tejo in Portugal.


ESCAN: The project on HC system replacement campaigns starts

REPLACE project aims to improve coordination in local networks to implement replacement campaigns for inefficient heating & cooling (HC) systems to be replaced with renewable energy sources.

Seal of the European Year of Cultural Heritage for the RENERPATH-2 project

The European project RENERPATH “Methodology of energy rehabilitation of heritage buildings 2” is co-financed by the INTERREG VA Spain – Portugal Program 2014-2020, known as POCTEP, has received from the European Commission the stamp of the EYCH Label.

The Smart Specialisation Platform on Bioenergy

The Smart Specialisation Platform on Bioenergy (S3P) is a tool to improve interregional cooperation through specialisation. From spring 2015 EC launched the initiative of the Smart Specialisation Platforms (S3P) as a joint initiative of the Directorates-General for Regional and Urban Policy, Energy, and the Joint Research Centre (JRC). Energy being a crucial societal challenge for Europe, the pace of development quickly picked up and the S3P-Energy emerged.

Electric vehicles in Natural Areas of Castilla y León Region

The Spanish region of Castilla y León is committed with a sustainable tourism thanks to the initiative of introducing electric vehicles in the regional Natural Parks, in the frame of the project MOVELETUR, SUSTAINABLE TOURISM […]

Best Practices

MOVELETUR Sustainable Tourism and Electric Mobility in Natural Spaces

The project MOVELETUR is a cross-border partnership between Portuguese and Spanish institutions to develop e-mobility on their tourist routes .

Promoting stakeholders engagement for Renewable Energy Sources in Castilla Y León – APPROVE Project

Read how EREN, the Castilla y León Energy Agency, works towards a better stakeholders engagement in the field of Renewable Energy Sources.

EREN: New Boost to Electric Renewables in Castilla y León

Find out how Castilla y León expects a huge growth in electric renewables, also participating to reach Spain’s 2020 EU targets on Renewables

Castilla y León commitment with electric mobility: from the regional government to all potential users

The Electric Vehicle regional strategy in Castilla y León has amongst its main objectives to achieve the incorporation of this clean technology into public transport fleets


Climate adaptation & Long-Term Planning

FEDARENE member regions and energy agencies are dedicated to helping municipalities in fighting climate change and preventing its unintended consequences. Read this new publication and find out about some of our best practices’ examples in the field!

FEDARENE Position Paper – Proposal for the Renewable energy sources Directive

This position paper is based on consultation with the members of FEDARENE and is in response to the proposal for the Renewable energy sources Directive, released on November 30th 2017. It was drafted with the support of EREN (Castilla y León Regional Energy Agency).


Accelerating PV deployment in Europe: a FEDARENE Webinar

This webinar is reserved to FEDARENE members only.

Workshop: SEAPs & Biomass: an opportunity for municipalities

The workshop is focused on working with local authorities or technicians, interested in Sustainable Energy Action Plans (SEAPs) and to expose the potential of a local resource such as the biomass for those SEAPs.

Workshop on Energy Efficiency and Climate Change

Castilla y León Regional Government is organizing this event to underline the role of public administrations in energy efficiency and climate change management.