Photovoltaic self-consumption for companies

Alterna Energía is a benchmark for quality and service in the renewable energy sector.


Specialized for more than 15 years in photovoltaic installations for companies.

Alterna Energía is a well-known name in the photovoltaic industry thanks to its experience in building and maintaining photovoltaic systems

Strongly focused on the client, we meet the most demanding standards, giving priority to safety, reliability and the quality of our services.

Alterna undertakes each project with the utmost rigour and always aims for excellence as its distinguishing feature: own design of engineering, exclusive adjustments according to the type of roof and ground, maximum customisation, guarantees and commitment.

50 workers 200 MW in Operation and Maintenance
Spain, Portugal and Mexico
+200 installations executed

Alterna Energía, proyectos fotovoltaicos Alterna Energía, construcción y mantenimiento de plantas fotovoltaicas

Alterna Energía shares its team of expert swith companies in Spain and abroad.

Alterna Liberty - Self-consumption

Alterna Liberty is an all-in-one solution for the Engineering, Building and Maintenance of self-consumption projects.

With Alterna Liberty, companies save from the very first day, earning a return on the investment in no time and ensuring energy efficiency in the long term, whilst fostering sustainability by consuming renewable energy.

Alterna’s team of experts leads the entire project from the very start. We guide our clients to develop tailor-made solutions, secure licences, take care of the engineering, execute the work and maintain the system to ensure maximum efficiency throughout its useful life.

Our turnkey proposal integrates all the services required, from the initial study to its operation. All this at unbeatably competitive prices and offering project financing options.

Alterna Liberty es la solución integral de IngenieríaAlterna Liberty Proyectos de autoconsumo



Alterna Energía is a well-known name in the photovoltaic industry thanks to its experience in building and maintaining photovoltaic systems. Strongly focused on the client, we meet the most demanding standards, giving priority to safety, reliability and the quality of our services.

Alterna undertakes each project with the utmost rigour and always aims for excellence as its distinguishing feature: own design of engineering, exclusive adjustments according to the type of roof and ground, maximum customisation, guarantees and commitment.

Alterna Energía, más sostenible Alterna Energía, crecimiento sostenible

Alterna Liberty - Self-consumption

Alterna Liberty es la solución integral de Ingeniería, Construcción y Mantenimiento de Proyectos de autoconsumo.

Con Alterna Liberty las empresas ahorran desde el primer día, rentabilizando la inversión en un plazo muy corto, asegurando su coste energético a largo plazo, a la vez que apuestan por la sostenibilidad consumiendo energía renovable.

El equipo de profesionales de Alterna lidera el proyecto desde el primer momento, asesorando a nuestros clientes para desarrollar soluciones a medida, gestionando las licencias, realizando la ingeniería la construcción y el mantenimiento con un equipo de expertos para reducir los riesgos y asegurar la máxima eficiencia de la instalación durante toda su vida útil.

Nuestra propuesta llave en mano incorpora todos los servicios necesarios, desde el estudio inicial hasta la puesta en marcha. Todo ello con una inmejorable competitividad económica y la opción de financiación.

Alterna Liberty es la solución integral de Ingeniería