Grid integration study for Costa Rica has started
Darmstadt, August 2015
energynautics, together with DIgSILENT and Meister Consultants Group, was commissioned by the Costa Rican utility ICE and the Costa Rican Ministry of Energy, MINAE, to conduct a grid study for the Costa Rican transmission grid. The project is financed by the Inter-American Development Bank, IDB. The objective of the study is the development of strategies to integrate wind and solar energy into the currently primarily hydro-based system. Variable renewable energy sources are intended to help Costa Rica, which already has an almost completely CO2-free electricity sector, to keep up with growing electricity demand. Furthermore, some of the best onshore wind locations in the world, with yearly capacity factors above 50 %, are located in the province of Guanacaste in northern Costa Rica, drawing considerable interest from investors.
energynautics CEO Dr. Thomas Ackermann and two members of the energynautics team travelled to Costa Rica for one week in late June 2015 to discuss the proposed methodology of the study with ICE, MINAE and the IDB. Furthermore, the team was able to have a look at the structure of electricity generation and transmission on-site, visiting a wind power plant in Guanacaste as well as the Arenal Lake, the country’s largest hydro reservoir.
Results of the study are expected to be published in mid-2016.
Energynautics will revise the Barbados Grid Code
Darmstadt, August 2015
The Barbados Light & Power Company has engaged the services of energynautics to review and expand on its grid code. The grid code regulates the technical requirements for customers generating electricity to connect to the utility’s grid. energynautics will work with Light & Power for a period of 10 weeks on this project.
Barbados is experiencing rapid growth in customer solar installations on the island. According to System Planning and Performance Manager, Johann Greaves, ‘The utility now has 8 megawatts (MW) of photovoltaic (PV) customers connected to our network and another 8 MW approved and awaiting connection. In addition to this, Light & Power has plans for a 10 MW solar PV plant and a 10 MW wind plant in the near future. This is all fitting with the Government’s goal to cover 29% of its energy needs from renewables by 2029.’
With a peak load of 152 MW and increasing intermittent generation capacity, the Grid Code has to be updated to accommodate the changing circumstances of the power system. Mr. Greaves noted that ‘the Intermittent RE Penetration (IP) Study for Barbados identified several changes to the Grid Code necessary to integrate more renewables, including requirements for fault ride through capabilities and voltage control. As a Company we remain supportive of alternative energy and all this is a necessary part of the move to a sustainable future.’ energynautics will revise the Barbados Grid Code in light of the recommendations of the IP Study, and will develop new Planning and Operation Codes for the Grid Code.
Open position at energynautics in Darmstadt
Darmstadt, July 2015
For our office in Darmstadt we are looking for a physicist or mathematician for the simulation of power systems (40 hours/week). Further information can be found in our job posting below.
Please send your application by 23. August 2015 via email to: firstname.lastname@example.org
Energynautics Modelling for Greenpeace shows how Jiangsu Province in China can triple its renewable targets for 2020
Darmstadt, July 2015
In a report based on modelling work done by energynautics, Greenpeace East Asia has demonstrated how Jiangsu Province in Eastern China can reach ambitious renewable energy targets by 2020 in a cost-effective way.
Jiangsu currently generates the majority of its electricity from coal, resulting in high CO₂ emissions and bad air quality. Current plans would increase wind and solar photovoltaic capacity in Jiangsu to 10 GW each by 2020, covering just 5% of its electricity demand from renewables.
energynautics’ modelling shows how Jiangsu can triple these targets and install 30 GW of wind, 30 GW of solar and 3 GW of biomass by 2020, thereby covering 14% of its demand with renewables from within the province. Simulations of the transmission network showed that while some grid upgrades are necessary to integrate wind generation from coastal regions where wind speeds are good, over half of the necessary grid extensions can be avoided by using innovative new grid technologies, such as Dynamic Line Rating. Dynamic Line Rating allows network operators to raise the thermal capacities of transmission lines when there is extra cooling due to the wind, thus avoiding grid upgrades.
The Greenpeace East Asia report demonstrates that there are no technical hindrances for Jiangsu to triple its renewable energy targets for 2020. Such an increase in renewables capacity has already been achieved by Germany in a similar time frame.
All modelling and simulation work was conducted during a month-long mission to China by two energynautics researchers. Jiangsu State Grid Corporation and the Chinese Renewable Energy Industries Association provided assistance to develop the scenarios.
Greenpeace East Asia Press Release (in English):
Greenpeace East Asia Press Release (in Chinese):
Study on Grid Codes: Technical Regulations for Power Systems Enabling Higher Shares of Variable Renewable Energy
Darmstadt, June 2015
Energynautics is conducting a study on grid codes and other technical regulations that govern grid connection of generators worldwide. The study, commissioned by the International Renewable Energy Agency (IRENA), illuminates aspects of grid code development with regard to variable renewable energy (VRE) sources namely solar photovoltaic and wind power. It is intended to provide a guideline for policy-makers and regulators especially in countries with low VRE planning to significantly increase their VRE penetration.
Besides researching and explaining the technical details of requirements for generators commonly found in grid codes, the Energynautics project team reviewed grid code documents from different countries, their history and their interaction with renewable energy policy, as well as international standards concerning VRE generators. Good practices and recommendations, especially for grid operators in developing countries with a rising VRE share, are developed. The study will result in an 80 page report document and further informational material, to be published by IRENA in late 2015.
Lead article published in COSPP magazine
Darmstadt, May 2015
In the latest issue of the magazine Cogeneration & On-Site Power Production (COSPP, Volume 16, Issue 3) Dr. Tröster from energynautics published an article on the importance of Grid Codes and the validation of computer models for CHP installations when establishing Grid Code compliance in Germany.
COSPP is a magazine which focuses on the clean and efficient generation of power through decentralized generation and combined heat and power for an industrial, utility and governmental readership.
The online version of the article can be found here:
Number 15 has been successfully certified!
Darmstadt, May 2015
According to the German Medium Voltage Grid Code, dynamic models have to be provided for generation units in order to receive a certificate for proof of grid code compliance. energynautics is specialized in developing models of combined heat and power (CHP) as well as wind and solar power plants. Recently the 15th model developed by energynautics was successfully validated and certified.
Currently there are a couple more models under development in order to receive the required certifications for CHPs by 30th June 2015. This is the deadline according to the recommendation of BDEW (German Association of Energy and Water Industries) to submit the certificate in order to avoid the disconnection of generation units.
For further information visit:
CALL FOR PAPERS:
5th Solar & 14th Wind Integration Workshop | 19 - 22 October 2015, in Brussels/Belgium
Darmstadt, April 2015
This year's Call for Papers for the Solar & Wind Integration Workshop is now open!
Take this opportunity to present your research or technical developments to a large international audience in the field of the integration of solar and wind power into power systems.
Be one of 60+ solar & 120+ wind speakers!
The online abstract submission deadline is 7 June 2015
The best 15 papers of our workshops will again be selected for a special issue of the IET Renewable Power Generation journal.
- Receive a discount on the participation fee
- All admitted papers and posters will be published in our printed and digital proceedings
- Network with experts from 25+ different countries
For detailed information visit:
Successful workshops for energynautics in Berlin
Darmstadt, January 2015
The 4th Solar and the 13th Wind Integration Workshop took place in Berlin in November 2014. With 175 solar and 300 wind participants the 2014 edition was a very successful workshop year for the organizer energynautics.
Get an impression of the workshops' atmosphere, be inspired by the lively discussions an its open spirit.
For detailed information about our workshops 2015 in Brussels see:
Energynautics at Cigré Technical Exhibition 2014
Darmstadt, 02 June 2014
Got grid? Got renewables? Add our integration knowledge for success!
We support grid operators worldwide in achieving new levels of sustainable generation. Our services reach from vision development to grid integration studies and support in power system operation. Our international experts conduct studies on integrating a wide range of renewables into island power systems or into distribution and transmission systems of any size.
The Technical Exhibition will be held in parallel to the Cigré sessions from:
25 - 29 August 2014, in Paris/France.
Visit us at our stand Level 1, #113 and talk to our experts. Or would you like to make an appointment for meeting us on-site? Please contact us:
Phone: +49 (0)6151-785 81 00
A press release and further informationen about the event can be found here:
Energynautics and partner win World Bank Seychelles Project
Darmstadt, 05 May 2014
Energynautics in cooperation with Meister Consultants Group, Inc. (Boston/USA) has won a World Bank project "for the Assessment of Grid Absorption Capacity, Grid Code, Feed-In Tariffs and Model Power Purchase Agreements for Renewable Energy Systems" on the Seychelles.
The aim of the project is the development of a grid code for the national power system under consideration of increasing shares of renewable and evaluation of the grid absorption capacity. For the evaluation of the grid absorption capacity regarding renewable energies, a detailed power system model of the national power system is developed.
A press release can be found here:
Results of the Distribution System Study Rhineland-Palatinate
Darmstadt, 23 April 2014
The results of the Distribution System Study Rhineland-Palatinate by energynautics will be presented in May/June 2014 at the following events:
Looking forward to seeing you at one of the events!
A press release can be found here:
Greenpeace publishes powE[R] 2030
Darmstadt, 20 March 2014
Greenpeace published today the report powE[R] 2030, that was developed together with energynautics.
It bases on the past reports "renewable 24/7" and "Battle of the Grids" by Greenpeace and energynautics, which looked at integrating high levels of renewables into the European power and transmission system.
This modelling has now been updated for "powE[R] 2030", with higher shares of renewables, better modelling of inflexible conventional generation (and the conflicts with renewables that ensue from this inflexibility) and a more detailed focus on HVDC technology. It was found that an "Overlay" HVDC grid to transport renewable energy over long distances in Europe can significantly reduce the total network expansion and avoid expensive curtailment of wind and solar power. In total Europe can cover 77% of its electricity supply using renewables with a network expansion of just 26,000 km.
The report can be downloaded here:
Distribution System Study Rhineland-Palatinate
Darmstadt, 13 February 2014
The Distribution System Study Rhineland-Palatinate by Energynautics, Oeko-Institut e.V. and Bird & Bird LLP, presented at the press conference of the Ministry for Economic Affairs, Climate Protection, Energy and Regional Planning of the German State Rhineland-Palatinate can now be downloaded here:
Press release of the ministry (in German):
Press conference for the Distribution System Study Rhineland-Palatinate
Darmstadt, January 2014
The state government of Rhineland-Palatinate aims to cover the state's electricity demand completely with renewables by 2030. In a study, commissioned by the Ministry for Economic Affairs, Climate Protection, Energy and Regional Planning of the German State Rhineland-Palatinate, the impact of the 100% renewable energy strategy on the power system was studied by Energynautics, the Oeko-Institut e.V. and the law firm Bird & Bird LLP.
The results of the Distribution System Study Rhineland-Palatinate will be presented at the press conference of the ministry in Mainz on 03. February 2014.
Japanese Edition of "Wind Power in Power Systems"
Darmstadt, January 2014
The 2nd edition of the highly acclaimed "Wind Power in Power System" (Editor: Thomas Ackermann, Energynautics GmbH) is not only available in English but was recently translated into Japanese and can now be ordered online.
Find detailed information on the book here:
New company address
Darmstadt, November 2013
As of 23 December 2013 our office in Darmstadt will be the new main office:Energynautics GmbH
Telephone +49 (0)6151-785 81 00
Please use the new address as of the date mentioned above. Thank you!
Renewables Integration Symposium 2013
Darmstadt, April 2013
We would like to welcome you to the Renewables Integration Symposium to be held in Mainz/Germany on 19 - 20 June 2013.
This years topic: High Integration Issues: Integration of Renewable Generation into the Distribution Network – Experience and Solutions from Germany and the World
The symposium languages will be English and German with simultaneous translation.
- Session I: Operation strategies for distribution networks with high share of renewables
- Session II: Interface between distribution and transmission network: What is needed from both sides!
- Session III: Principle solutions to high penetration challenges
- Session IV: High renewable penetration levels and Smart Grids
- Session V: Panel discussion
For a detailed program please visit:
To get a discounted rate, register now as an Early Bird until 30 April 2013:
Energynautics Christmas Newsletter 2012
Darmstadt, December, 2012
Find out more about energynautics current projects and the upcoming Wind and Solar Integration Workshop as well as the Symposium 2013.
The newsletter is available here:
Recent job opportunity
Darmstadt, October 2012
Due to the steadily growing demand for our services, we would like to strengthen our team with a new renewable energy consultant.
Find more information here:
Greenpeace releases Smart Energy Access Report for Bihar, India
Langen, Germany (May 2012)
Together with Greenpeace, energynautics has investigated the potential role of microgrids in rural electrification. The microgrid approach is attractive because it can facilitate the integration of renewable energies, thereby contributing to national renewable energy targets. Being built from modular distributed generation units, it can adequately adjust to demand growth. In addition, it can operate both in island mode and grid-connected mode, making operation flexible and can also offer grid support features.
This report demonstrates with a case study how this bottom-up approach with microgrids would work. It focuses on development in the state of Bihar in India.
Find more information here:
Cell Pilot Project Denmark: Final Report available
Langen, Germany (March 2012)
energynautics was together with Spirae Inc. and Siemens A/S one of the main project partners of the Danish network operator Energinet.dk for the development of an intelligent monitoring and controlling system (Cell Controller) for power networks. The Cell Controller enables and optimizes the integration of 50% renewable energy. The project was successfully completed in November 2011.
The final report is now available online and can be obtained here:
Wind Integration Symposium 2012
Darmstadt, March, 2012
The 2. Wind Integration Symposium will be held in Frankfurt/Main from May 8 - 9, 2012 covering the following topic: Integration of Renewables - High Penetration Issues: Understanding and Managing the Changing Power System Dynamics with high Level of Non-Synchronous Generation.
The 5 symposium sessions are:
- Session 1: Experiences and challenges for TSOs/DSOs associated with high penetration of renewables Analysis of Experiences of Power System technical challenges for countries with high instantaneous penetration of non-synchronous plant.
- Session 2: Analysis of associated challenges of high penetration
- Session 3: Principle solutions to high penetration challenges
- Session 4: Modelling challenges for investigation of high penetration challenges
- Session 5: Panel Session
We are looking forward to having you as a participant at the symposium.
Find more information here:
Energynautics Christmas Newsletter 2011
Darmstadt, December, 2011
Find out more about Energynautics current projects and the upcoming Wind and Solar Integration Workshop as well as the Symposium 2012 in our Christmas Newsletter.
The newsletter is available here:
Dr. Thomas Ackermann and Dr. Eckehard Tröster lecturers at Technical University Darmstadt
Darmstadt, December 13, 2011
Dr. Thomas Ackermann and Dr. Eckehard Tröster have been assigned as lecturers of the course „Renewable Energies“ at the Darmstadt University of Technology since the winter term 2011/2012. The course consists of fundamentals of renewable energies with a focus on solar, wind and hydro power.
Report for AEMO Wind Integration Investigation published
Australia, December 06, 2011
Commissioned by the Australian Energy Market Operator (AEMO), energynautics prepared a report which reviews wind integration studies conducted around the world. The report provides a summary of the experiences in terms of the key technical issues studied, the methodologies and assumptions used, and main conclusions of the investigations, with a focus on island operation of power systems, and with high penetration of variable renewable energy generation. Aspects that are relevant to the NEM were identified in conjunction with AEMO, and suggestions on how AEMO could prepare comprehensive wind power integration studies for the expected level of renewable energy development in the future were made. These findings are also presented in this public report.
Download this report here:
For more information visit AEMO's website:
Grid study „Roadmap 2050 – a closer look“ released
Berlin, October 19, 2011
At a press conference held in Berlin on October 19th 2011, Dr.-Ing. Eckehard Tröster and our project partners of the „Institute of Energy Economics at the University of Cologne“, presented the study Roadmap 2050 – a closer look: Cost-efficient RES-E penetration and the role of grid extensions.
This study analyses the investment needs on the European power grids with a share of 80% renewables.
Download this study here:
Grid study for Greenpeace Luxembourg
Luxembourg, July 06, 2011
At the press conference in Luxembourg on 6 July 2011, Eckehard Tröster from Energynautics presented the Study for import of electricity from renewable energy to Luxembourg with special consideration of new high voltage power lines between Luxembourg and France.
Journalists gained insight into the current situation of the Luxembourg grid and received important information on topics such as the security of energy supply and the expansion of renewable energy.
The study can be downloaded here (in German only):
Dr. Thomas Ackermann instructor at SIDA-Workshop 2012
Stockholm, Sweden, May 11, 2011
Dr. Thomas Ackermann will be participating as instructor at the 2012 SIDA workshop Wind Power Development and Use. The workshop will be held in five phases, taking place in Asia/Africa, Sweden and India. The objectives of the workshop are to provide an understanding of the importance of wind power regarding climate change, to focus on the advantages and disadvantages of wind power and to provide knowledge and understanding of the entire process of the utilisation of wind energy.
European grid study 2030/2050
Brussels, Belgium, January 18, 2011
Commissioned by Greenpeace International, energynautics has prepared a study on the future European electricity grid in 2030 and 2050 to assess the infrastructure required to support up to 100% penetration of renewable energies as predicted by the latest Energy [R]evolution scenario. The study discusses the role of demand-side management, storage, and optimization of renewables production in smoothly integrating renewable energies as well as maintaining a secure supply of electricity.
If you have any further questions, please feel free to contact our team.
Energynautics Workshop in Aarhus, Denmark in October 2011
Langen, Germany (January 2011)
The 10th International Workshop on Large-Scale Integration of Wind Power
into Power Systems as well as on Transmission Networks for Offshore Wind Power
Plants will be held in Aarhus, Denmark on 25 and 26 October 2011.
For the first time, a Solar Integration Workshop will be part of our program.
For information on the workshop, see www.windintegrationworkshop.org,
for Call for Papers see http://www.windintegrationworkshop.org/callforpapers.html.
Grid design by energynautics has been used in McKinsey study
Langen, Germany (October 2010)
The new study »Transformation of Europes's power system until 2050«,
conducted by McKinsey, shows how the European power system will develop until 2050.
In this study, energynautics was significantly involved in the grid design for
the various scenarios.
Further information on the European grid model can be found here.
Dr. Eckehard Tröster on Powergrid Europe 2010 in Amsterdam
Amsterdam (9th June 2010)
Dr. Eckehard Tröster presents the results of the fault ride through study of gas-engine CHPs commissioned by VDMA on Powergrid Europe in Amsterdam.
The presentation can be downloaded here: FRT Study Powergrid 2010 Amsterdam (PDF | 1,1 MB)
Presentation of the Fault-Ride-Through Study at the network technology/network operation forum in the VDE (FNN)
Langen, Germany (April 2010)
According to the new medium voltage grid codes in Germany, generating plants
must stay connected during a short-circuit fault in the grid. Due to their low
inertia and the difficulties in shutting off the gas supply abruptly, gas-engine
gen-sets accelerate during a fault and cause the generator to fall out of step
with the grid frequency, decoupling it from the grid.
Commissioned by VDMA, energynautics has studied different solutions to this problem, such as increasing inertia, using a braking resistor or eddy-current brake, or a full power converter to improve the fault-ride-through behaviour of the gen-set in order to stay safely connected to the grid.
Investigations have been carried out using the software tool DIgSILENT PowerFactory and were based on the data of five gen-sets in the range of 220 kW up to 6.9 MW.
The study gave valuable insights for the discussion between the grid operators and the gen-set manufacturers.
Wind Energy Courses 2010
Langen, Germany (January 2010)
Thomas Ackermann holds courses during the following events on network integration:
- The course Wind Generation in Power Systems organized by UWIG A Short Course on the Integration and Interconnection of Wind Power Plants into Electric Power Systems will be held between 21 and 24 September 2010 in Austin, Texas. Details regarding registration and accommodation will be shortly available at http://www.uwig.org/.
- The course Wind Power Development and Use organized by Life.se (www.life.se) and SIDA (Swedish International Development Cooperation Agency) was held in April 2010 in Sweden. The course will particularly discuss power supply in developing countries.
Thomas Ackermann on the Handelsblatt Annual Meeting of the Energy Industry 2010
Langen, Germany (December 2009)
Thomas Ackermann presents the latest results of the cell pilot project where energynautics together with the Danish network operator Energinet.dk develops a new network management technology. The Annual Meeting with an expected 1000 participants is the most important meeting point of decision-makers of the German energy industry. More than 60% of all participants are board members and CEOs. For programme details see http://www.handelsblatt-energie.de/pdf/P1200320.pdf.
Energynautics Workshop in Québec, Canada in October 2010
Langen, Germany (December 2009)
The 9th International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Power Plants will be held in Québec City (Québec, Canada) on 18 and 19 October 2010. For information on the workshop, see www.windintegrationworkshop.org; for Call for Papers see http://www.windintegrationworkshop.org/callforpapers.html.
Study on the European Supergrid commissioned by Greenpeace
Langen, Germany (November 2009)
On behalf of Greenpeace, energynautics has prepared the study Renewable Energy Supply 24/7. The study discusses intelligent power networks that can match consumption and generation – even of large-scale decentralized and renewable energy – and ensure the secure energy supply in the 21st century. The study is available at: http://www.greenpeace.de/fileadmin/gpd/user_upload/themen/energie/renewables24-7.pdf.pdf (in English)
Energynautics Workshop in Bremen was a big success
Langen, Germany (October 2009)
Energynautics held the 7th International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Farms between 14 and 16 October 2009 in Bremen and could welcome over 330 participants from about 30 countries. For further information, see: http://www.windintegrationworkshop.org/bremen2009/index.html
Short courses SIDA and UWIG
Langen, Germany (September 2009)
Thomas Ackermann held courses during the following events on network integration:
- The short course organized by UWIG Wind Generation in Power Systems: A Short Course on the Integration and Interconnection of Wind Power Plants into Electric Power Systems was held between 14 and 17 September 2009 in Charleston, SC, USA.
- The short course Wind Power Development and Use organized by Life.se (www.life.se) and SIDA (Swedish International Development Cooperation Agency) was held in September 2009 in Sweden. The course particularly discusses power supply in developing countries. For details see http://www.life.se/system/visa.asp?FID=779&HID=797&HSID=13729&ActMenu=13733&ActSubMenu=13740.
EcoGrid study completed
Langen, Germany (August 2009)
On behalf of the Danish network operator Energinet.dk, energynautics prepared together with other Danish and foreign partners a study that discusses the necessary changes of the Danish network design over the next 10 to 15 years. The main focus is on technical and economically feasible solutions for the integration of large-scale wind energy. The study is available at http://www.e-pages.dk/energinet/137/.
Workshop 09 - 10 March 2009
Langen, Germany (March 2008)
The 2nd International Workshop on Concentrating Photovoltaic Power Plants: Optical Design, Production, Grid Connection took place on 09 - 10 March 2009 with over 100 participants in Darmstadt, Germany. Read the press release regarding this workshop. Here you find further information: www.concentrating-pv.org
New Website online
Langen, Germany (August 2008)
You may have already noticed: The new energynautics website is online! New design and easy navigation are the key elements of this internet appearance that extensively informs about the company and projects. In addition, it provides links to Workshops, conferences, relevant publications and others. "We wanted to have an Internet appearance that reflects the high quality demand of our work", says Thomas Ackermann, CEO of energynautics. "Our customers should get a good first impression." The website was designed and implemented by chives Darmstadt, Germany.
Cell Pilot Project Denmark: First test phase successfully completed
Langen, Germany (January 2009)
energynautics is together with Spirae Inc. and Siemens A/S one of the main project partners of the Danish network operator Energinet.dk for the development of an intelligent monitoring and controlling system (Cell Controller) for power networks. The Cell Controller enables and optimizes the integration of 50% renewable energy. Now the first comprehensive test under life conditions was successfully completed in the Danish power network. energynautics mainly worked with the simulations of the system stability. For further information, see http://www.energinet.dk/EN/El/Nyheder/Sider/Energinet.dk-in-front-with-Smart-Grid-concept.aspx.
Workshop 26 - 27 May 2008
Langen, Germany (May 2008)
On 26 - 27 May 2008, energynautics organized the 7th International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Farms in Madrid, Spain and could welcome 280 participants to that event.
The workshop provided a framework for:
- Discussing technical and economic issues of the large-scale integration of wind power including the recent advances in transmission technology (AC and DC);
- Discussing project experience;
- Discussing innovative ideas and present results from ongoing research;
- Stimulating interdisciplinary thinking between wind energy and power transmission industries as well as universities;
- Identifying subjects requiring more research efforts;
- Exchanging ideas, results and knowledge;
- Comprehensive discussions and brainstorming.
- In addition, the workshop included a field trip to the control centre of the Spanish Transmission Network Operator REE and to Iberdrola's control centre for renewable energies.