Speakers’ Corner: CENER, Raquel Garde Aranguren

This week, we continue our series where we ask our speakers 6 questions on Energy Storage, share their answers with you. Today we are pleased to feature the answers from the Head of Energy Storage,Renewable Energies Grid Integration Dept,Raquel Garde Aranguren. Enjoy!

One technical innovation in the field of energy which has excited me the most would probably be the new flow batteries as they have the capability to separate power and energy capacities. This provides them a flexibility that other storage systems have not, except for hydrogen. Also, the improvements on hydrogen technologies as electrolysers able to operate according to the power availability control or new applications are interesting as well. 

The main handicap to develop energy storage is the lack of regulation and a market framework well defined. Once both defined and implemented, technologies shall have the opportunity to demonstrate their cost-effectiveness and they will be deployed. Homogeneous standards to commercialize these systems with clear specifications are also necessary.

At large scale the only commercial system is pumped-hydro and it provides just balancing services. That is not enough to make it cost-effective and its deployment is decreasing. Other services should be included among its capabilities to increase revenues.

At distribution level, many services are expected to be provided by energy storage but that is not yet fully demonstrated. The lack of regulation hinders the deployment of distributed storage and services are difficult to be identified.

I think that an accurate economical assessment should be developed taking into account other options to ensure the flexibility of the European grid into the Internal Energy Market. But, if RES are developed as expected, grid reinforcements won’t be enough to manage the energy and development of new concepts as Smartgrids requires storage to balance energy into the smartgrid. Therefore, energy storage will be essential in the future at different levels of the grid but probably more at the distribution level.

I would like Forum delegates to brainstorm and discuss about regulation and market development. I hope they will be able to come up with the procedure that regulators should follow to include storage in the European and national directives and the main points to clarify regarding that.

My organization has been working on Energy storage for more than 10 years. We started working on hydrogen but in the last 5-6 years we have extended our expertise to all the rest of the technologies, mainly batteries and related technologies (electric vehicles). We use energy storage as the core of Smartgrids and we have in our facilities many different technologies to test. We have as well a large experience in regulatory and economical aspects related to storage.

Raquel Garde Aranguren will be speaking at the Pre- Forum Workshop about “Energy Storage with Solar”, on Monday, 22 April 2013. 

If you want to know more about this and other topics directly from end users of energy storage technologies join us at one of these annual events: The Energy Storage World Forum (Grid Scale Applications), or The Residential Energy Storage Forum, or one of our Training Courses.


Battery Storage for Commercial & Industry

Powerful battery storage offers many advantages in terms of saving electricity costs and a reliable power supply. With this technology, companies retain control of their energy supply and costs. The battery storage system is charged when energy is cheaply available and it supplies the stored electricity when prices are at their highest. With applications such…

Read More

Future energy predictions: Growth of flexibility and grid forming

  It is well known that COVID-19 has caused low energy demand and the growth of renewable energy across Europe. Now, Andrew Tang, Vice President for Energy Storage at Wärtsilä, predicts this will result in swift action to build better grid resiliency. The share of renewable power across Europe has skyrocketed over the last six…

Read More


“Probably the most interactive and well organized storage event on the calendar.”


Sales Director, S&C

“Great topics, competent speakers, good networking: keep it like that.”



“High scientific content, well targeted, perfect organization.”


Expert Technical & Governance, Elia

Excellent networking event. The sponsorship was well worth it.”


Manager, ATL

View More