Energy management systems for hybrid plants

FuturENERGY July-September 2021

Sistema de gestión de la energía para plantas híbridas

The long-term goal of Spain’s Climate Change and Energy Transition Law is to achieve a 100% renewable energy system and, among other strategic changes, proposes the following: fostering green hydrogen and other renewable gases; a firm commitment to electric mobility; and possibility of agent participation in storage and demand management in the energy and operating markets.

This regulation goes into more depth as regards changes to the electricity market. Specifically, it addresses aspects relating to:

Demand. It contemplates the existence of increasingly more sophisticated customers who specifically call for renewable energy or renewable fuels, even information on its specific origin and the ability to prove it to third parties in real time. Furthermore, demand is not only understood as traditional electricity demand but also demand based on multiple energy vectors, Power-to-X and Power-to-X-to-Power with X thermal or biofuels.

Installations. A new typology of user is emerging, such as energy communities, which require technological solutions that are easy to implement and manage. More complex installations are also appearing with multi-technology generation that also require multi-technology storage systems, where the target function can vary from one case to the next. For example, there are applications where the variable to optimise is the levelised cost of energy (LCOE) or installations whose aim is to offer grid services (balancing, regulation, etc.).

Mónica Aguado and Faisal Bouchotrouch

Grid Integration Department at CENER, the National Renewable Energy Centre.