The importance of the design tools and green hydrogen optimisation
Green hydrogen is positioning itself as a viable alternative in the context of the transition towards clean and sustainable energy sources. Not only does this energy carrier transform energy without emitting pollutants, but it also has significant long-term storage capacity, which helps to address one of the main problems of renewable energy sources such as solar and wind: their intermittent and seasonal nature.
Due to the several hydrogen applications and the variable nature of renewable sources, the design and optimisation of green hydrogen production, storage and utilisation systems are complex processes especially when applyied to industrial processes, where careful management of the entire chain is necessary to ensure continuous and efficient operation. This is where simulation and optimisation tools plays a crucial role, facilitating the efficient integration of hydrogen into the energy system and enabling optimal decisions to be made based on detailed data and accurate projections.
Need for specialised tools for energy transition
In order to move towards a more sustainable and decarbonised energy system, it is essential to apply dynamic modelling and simulation to optimise both the production and use of green hydrogen in the residential, industrial and heavy transport sectors, as each has different energy demand patterns, requiring the development of specific tools to evaluate multiple scenarios, optimise design and determine the most appropriate control and management strategies.
These tools not only allow the simulation of system behaviour under real conditions, but also help to optimise important parameters such as electrolyser power ratings, hydrogen storage volume and the management of optimal times to consume or storage energy. The application of advanced optimisation algorithms aims to reduce operational and investment costs while maximising the use of renewable energy by ensuring that the best technical, economical and ecological decisions are made.
Functionalities of the developed tool
CARTIF which is a Cervera Centre of Excellence, awarded by the Ministry of Science and Innovation and the CDTI, under the files CER-20191019 and CER-20211002 has developed a tool for the design and optimisation of this type of systems thanks to the CERVERA H24NewAgeproject. It is a platform that enables the design and optimisation of systems for the production and use of green hydrogen in residential and industrial environments by applying dynamic modelling together with Python through an easy-to-use web interface that facilitates access to complex simulations without the need for advanced technical knowledge, contributing to the democratisation of hydrogen technology, allowing users with different levels of experience to interact with complex models and gather useful information for decision-making in the design of their systems. Some of the key points of the tool are:
Simulation of hydrogen production scenarios: Users can simulate a variety of hydrogen production environments, such as industrial processes, industrial cogeneration, residential micro-cogeneration and large-scale power generation.
Optimisation Based on Advance Algorithms: The tool helps to size the optimal size of system components, minimising costs and maximising renewable energy utilisation using advanced optimisation algorithms. It also includes the creation of operational strategies that consider renewable energy availability, hydrogen demand and storage constraints to achieve economical and efficient operation.
Flexibility and Adaptability: Crucial parameters such as geographic location, demand profiles and renewable production technologies can be adjusted through the platform, making it ideal for a variety of scenarios and specific needs. This capability is fundamental for users to assess how their designs would perform in different situations and scenarios, adapting hydrogen production and storage technologies to the particularities of each environment.
Visualization of results: The tool’s web interface makes it easy to visualise simulation results through interactive graphs and tables showing key aspects of the system, such as energy efficiency, operating costs and storage capacity. Users can also compare the results of different scenarios, which is essential for identifying opportunities for improvement and making further adjustments.
Conclusions
Ultimately, tools such as these can be used to evaluate and optimise strategies for the production and use of green hydrogen, facilitating its integration into the energy system and contributing to a more sustainable future. Thanks to access to advanced models and optimisation algorithms, these tools enable informed decisions to be made, resulting in more efficient and resilient systems. A clear example would be the optimal hydrogen storage capacity, the correct estimation of which can avoid unnecessary costs and ensure a constant supply, increasing the operational efficiency of the system. In addition, the ease of use and flexibility offered by these platforms help reduce the technical barriers to adopting green hydrogen, making it an accessible and viable option for a wider range of users and applications. This is key to moving towards an effective energy transition and to fostering solutions that reduce dependence on fossil fuels and support climate change mitigation.
Co-authors
Jesús Samaniego. Industrial Engineer. Since 2002 he has been working at CARTIF in the development of projects within the field of energy efficiency, the integration of renewable energies and in the study of the quality of the electricity supply
Once again, the time has come to celebrate food, nourishment, and everything that surrounds this fundamental human right.
Every year, on October 16th, the world comes together to celebrate and raise awareness of an essential aspect that affects all of us every single day: food. Food is not just what we eat; it represents the people, our environments, and the planet we all share. This day is marked by events around the world, engaging all actors in the system-governments, businesses, civil society, researchers, and every one of us who needs to eat every day. The Food and Agriculture Organization of the United Nations (FAO) uses this occasion to remind us of something as vital as the right to food.
The Universal Declaration of Human Rights, adopted by the United Nations General Assembly in 1948, recognizes the right to food, as well as the rights to life, liberty, work, and education. Every single person on this planet should have access to enough food that is nutritious, affordable, safe and sustainable.
This year also marks the 20th anniversary of the Right to Food Guidelines, which outlined how to achieve this goal through appropiate strategies, programmes, policies and legislation.
#WorlFoodDay is one of the most celebrated days on the United Nations (UN) calendar; this occasion aims to raise awareness about the need to unite the efforts of all actors within food systems to achieve the right to food, ensuring a better life and future for all.
Despite this, much remains to be done to ensure consistent results across the globe. Conflicts and violence are major drivers of hunger. It is deeply concerning that hunger persists, even though we produce enough food to feed more people than the current global population.
Agricultural productivity declines, pest outbreaks, and soil degradation cuased by the effects of climate change; food waste, resource overexploitation, food insecurity, and imbalances in food availability leading to extreme hunger or, conversely, widespread overweight and obesity-these are unresolved challenges that continue to destabilize the right to food.
It seems logical and straightforward that everyone should have access to food and a healthy diet. Yet, unhealthy diets remain the leading cause of all forms of malnutrition (undernutrition, micronutrient deficiencies, and obesity), affecting 2.8 billion people worldwide, regardless of social class.
Food systems are key to transforming the way we eat into healthier, more sustainable, and safer practices, while at the same time being severely affected by crises linked to conflicts, climate change, pollution, and biodiversity loss. A stronger global commitment to the right to adequate food is essential through the transformation of food systems into more sustainable, resilient, and equitable systems.
“It is crucial to highlight the importance of food and the need to make concerted efforts to ensure that every person on the planet has access to a diverse range of nutritious, affordable and safe foods, all produced in a sustainable way.
This celebration serves as both a recognition of this right and a call to action to transform our food systems to meet current needs and protects future generations.
It is a day to celebrate the richness of diversity, the importance of all that surrounds food, and a call to action to work together, engaging al actors in the chain (governments, civil society, researchers, businesses) to promote the necessary transformation of food systems and ensure access to healthy diets for all.
At CARTIF, as a Technology Center, our missions is to generate solutions for the transformation of food systems to increase their sustainability, resilience, safety, and fairness. We apply our knowledge and technologies to drive innovation that enhances the availability of nutrtitionally rich foods, fosters food security, and makes full use of natural resources within a frameworl of sustainable food production. This is our commitment to building a sustainable future for food.
I have always been passionate about telecommunications, and the implicit idea of achieving a “connected world”, wired or wireless, where information flows from one end of the globe to the other, regardless of the location and the native way in which each country, city or region tends to communicate. But in the face of this idealisation of a historically and recurrently connected world, there are problems of understanding in this communication. Whether it is because the language is different, because different alphabets or writing is used, or because culturally the rules of language use and the way of communicating differ from continent to continent, the reality is that global communication is a challenge that we continue to face today.
In the era of digitisation and the Internet of Things (IoT), where large volumes of data are now being collected, stored and processed, problems in the communication and unique representation of information are once again becoming apparent. It will be difficult to find data capture devices (from different manufacturers) that provide information using the same format, or that answer using the same question. Such is the problem that there are disciplines, including telematics, that focus on defining and specifying standard communication protocols that apply to different domains. But what if we want to communicate different domains? Despite the existence of standards, the problem persists. We are faced with a Digital Tower of Babel, where the heterogeinity of protocols, representation formats, communication rules and standards once again makes understanding between systems and solutions difficult.
To solve this problem, and of course, in the military and technological sphere, the concept of interoperability was born, understood as the ability of the armed forces of different nations to collaborate efficiently through the integration of systems and communications. This interoperability approach was later adopted by other sectors, such as the Information and Communications Technology (ICT) sector, with the development of systems that required efficient and conflict-free information sharing between different devices and platforms. In this ICT context, interoperability is understood as the ability of different systems, devices or applications to comunicate, exchange and use information effectively and coherently.
“Interoperability. Understood as the ability of different systems, devices or applications to comunicate, exchange and use information effectively and coherently.”
To achieve this interoperability between heterogeneous systems, i.e., systems that speak different languages and represent the information in different ways, we need to cover several dimensions, each focusing on a different aspect of communication and data exchange between systems:
Technical interoperability refers to the ability of different systems and devices to connect and communicate with each other through standards and protocols. This includes hardware, software, networking and communications compatibility.
Semantic interoperability is responsible for ensuring that the information exchanged is understood in the same way by all parties, thanks to the generation of a common vocabulary (ontology). It is about ensuring that systems interpret data with the same meaning, regardless of how they are structured or labelled.
Syntactic interoperability ensures that systems can process and exchange data in a structured way, i.e., that the same data formats and structures, such as XML or JSON, are used.
Organisational interoperability involves the alignment of policies, processes and regulations across organisations to enable effective collaboration. It encompases governance arrangements, security policies and data management.
One of the sectors that will benefit greatly from these interoperability solutions is the building sector, where digitisation and information exchange at all stages of the life cycle offers a springboard for development and competitiveness. Here, the creation of intelligent buildings, highly monitoring and able to anticipate the needs of their users thanks to digitisation and advanced data processing, alowws forbuildings that contribute to the goals of efficiency, decarbonisation and sustainability. In this context, interoperability solutions allows the diverse energy systems (such as lighting,HVAC, air conditioning, etc.) to work together, sharing and processing data seamlessly, regardless of manufacturers or platforms. This helps to optimise building management, reduce costs and improve energy efficiency by enabling systems to work as an integrated ecosystem.
At CARTIF we have been working for more than a decade on energy efficiency projects where interoperability enabling technologies, both technical and semantic, are a key element for obtaining smart, open and highly replicable solutions. Projects such as DigiBuild, DEDALUS and BuildON are examples of how these technologies facilitate the creation of smart and sustainable buildings.
One of the main challenges facing the Spanish Mediterranean basin is the scarcity of water resources, a critical factor for agricultural production in the region. Agriculture is a vital economic sector, dominated by irrigated crops such as vegetables and, currently, olive groves. The latter, traditionally rainfed, have been converted to irrigated crops due to the decrease in rainfall observed in recent decades. Both vegetables and olive groves require a constant and adequate water supply during their most demanding production phases, which intensifies the pressure on the limited water resources available in the area.
These irrigated crops are essential not only for food production but also for the local and national economy. For example, olive oil production in Andalusia is a fundamental pillar of the Mediterranean diet and represents a significant portion of Spain’s agri-food exports. In 2023, Spain exported 684,500 tons of olive oil, demonstrating the importance of this sector in international trade. The olive tree, although drought-resistant, has specific water requirements that are crucial for its development and production. Generally, olive trees require between 0.4 and 0.8 litres of water annually, depending on factors such as soil type, tree age, and climatic conditions. During critical periods, such as flowering and greening, water needs increase considerably, making adequate irrigation vital to ensure a quality harvest.
Water balance of Andalusia, Spain (2021-2050) (mm/day)
Furthermore, the quality of water used for irrigation is crucial. Water with high salinity or contaminants can negatively affect olive tree growth and the quality of the oil produced. Inadequate irrigation can lead to problems such as reduced yield and concentration of phenolic compounds, which are essential for the organoleptic properties of olive oil. Therefore, the use of quality water is not only vital for the health of the olive tree but also directly influences the quality of the final product, impacting the profitability of the crop.
However, the dependence of these crops on irrigation water poses various challenges for long-term sustainability, especially in the context of climate change that is exacerbating water scarcity. Efficient management of water resources thus becomes a priority to ensure the viability of olive oil production and other crops in the region.
The PRIMA NATMed project, coordinated by CARTIF, addresses water scarcity in the Mediterranean region through the implementation of Nature-based Solutions (NbS) in existing water infrastructures. Its innovative approach, based on the development and implementation of “Full-Water Cycle-NbS”, aims to optimize water management and improve related ecosystem services, while providing environmental, social, and economic benefits to Mediterranean communities.
One of NATMed´s key initiatives is the implementation and improvement of reclaimed wastewater treatment and storage systems for reuse in agriculture. This strategy provides an alternative water source that not only helps conserve natural water sources by reducing the overexploitation of ecosystems and water resources, but also provides farmers with a reliable source of irrigation, especially in water-scarce regions. Furthermore, the use of reclaimed water supplies nutrients to crops such as phosphorus and nitrogen, which reduces the need for chemical fertilizers and, consequently, decreases production costs, thus contributing to the economic and environmental sustainability of agriculture in the Mediterranean region.
An example of this strategy is the Spanish case study of the project located at the Center for New Water Technologies (CENTA) in Carrión de los Céspedes, Seville, where the combination of various artificial wetlands is being optimized with the aim of providing reclaimed water for irrigation of crops such as olive groves. These wetlands can be of different types, including:
Hybrid configuration: Vertical Subsurface Flow + Free Water Surface.
Floating helophyte wetland.
Aerated treatment wetland.
French vertical flow wetland
Center for New Water Technologies (CENTA) in Carrión de los Céspedes, Seville
Artificial wetlands are human-created ecosystems that emulate the natural water purification processes found in natural wetlands. These NbS leverage an intricate network of interactions between substrate, plants, and microorganisms to effectively purify wastewater. As water flows through the wetland, contaminants are removed through a series of complementary processes: suspended solids are trapped in the maze formed by the substrate and plant roots; organic matter is decomposed by a diverse community of microorganisms thriving in both aerobic and anaerobic conditions; nitrogen is absorbed by plants or transformed by specialized bacteria; phosphorus is captured by the substrate; and pathogens are neutralized by a combination of factors, including toxic substances produced by plant roots and the action of predatory microorganisms. This synergy of physical, chemical, and biological processes makes artificial wetlands an effective and sustainable solution for wastewater treatment.
Finally, the optimization of artificial wetlands developed in the NATMed project seeks to address the challenge of water scarcity in irrigated agriculture by providing alternative irrigation sources, which also reduce the need for chemical fertilizers, thus contributing to the environmental and economic sustainability of the region. As part of this approach, irrigation water quality parameters will be measured to ensure compliance with current regulations, in addition to analysing the nutrients provided to the soil, such as phosphorus and nitrogen, and their impact on crop production. A key aspect of the project is its potential for replicability in other locations to address the challenge of water scarcity in the Mediterranean region, which is being facilitated through engagement and training activities with relevant stakeholders in the area. These initiatives are fundamental to ensuring the long-term viability of agriculture in the region in the face of climate change and increasing water demand.
Lotus flower has the capacity of survive on difficult environments, such as pantanous areas, hence it is frecuently associated with the complex vital processes that human being should face.
Most technology centres have been told phrases like “tell me about it and I´ll tell you if it adapts to what I need“, “find me a grant and we´ll set up a project that adapts” or ” when you have developed it and it works, we´ll talk”. These types of phrases are nothing more than a demonstration of, in general, the low innovative culture that we have in our environment, and of the non-existent strategic business policies based on innovation.
Technology centres are expert agents in incremental innovations, who are beholden to the demands of the market and who aim to generate social and economic benefit in the innovation systems to which we belong. We are, therefore, fundamental agents for achieving prosperity in the regions, given that our mission is to use science, transform it into technological solutions and transfer it to the market so that it can be exploited and generate value.
“Technology centres are fundamental agents for achieving prosperity in the regions”
We need each agent in the innovation system to fulfil its role because if each agent operates freely, in a market of perfect competition, where the only variable that is perceived to be considered is price, inconsistencies and inefficiencies arise that in many cases aren´t perceived in the short term, but in all cases are suffereed in the long term. Thus, innovation ecosystems can become real crops of “de-technology” of “de-valuation” and ultimately of “de-innovation” if each agent is not clear about our function and sphere of action, if we don´t operate seeking role monopolies and if a common objective not pursued as an ecossytem by all the agents that participate in the ecosystem.
Without going into who came first, the chicken or the egg, there are several examples that demonstrate the relationship between the competitiveness and prosperity of regions and the existence of strongly rooted technology centres, with a clearly defined role and supported by the ecosystem:
These are ecosystems where innovation is economically and fiscally incentivised, and where there is a real culture of change for prosperity.
Ecosystems that have a clear commitment on the part of public administrations to innovation, piloting strategic projects based on technology, investing in basal funding for technology centres and with monopolies on the roles of each agent that achieve the efficiency of the ecosystem.
These are ecosystems with tax treatments that incentivise the generation of blue oceans in the long term and the purchase of technological innovation from their own agents in the short and medium term.
They are culturally advanced ecosystems that seek for technological independence and therefore autonomy in decision-making.
Ecosystems with mature technology and knowledge valorisation networks ready to exploit these assets.
Ecosystems that create own talent and attracts foreign talent.
Knowing, therefore, the environmental variables that affect the establishment of an adequate innovation ecosystem: sustainable and prosperous, it is the duty of all the agents that make up the innovation ecosystems to fight to achieve fertile innovation environments, well equipped with resources and innovative culture, which serve as water and fertiliser, and not swamps in which each agent has to become lotus flowers seeking survival in an environment in which we compete on prices and which distances us from seeking the prosperity of our own regions, which can only be achieved by contriuting value according to our role.
Innovate for you, innovate for me, innovate for us.
Do you want to know the tool before telling you more about it? Enter to the Beta version here
In 2022, the European Commission choosed 112 cities to participate in the”100 Climate-Neutral and Smart Cities by 2030″ initiative (27 european and 12 from partner countries). These cities would receive technical support from the Mission Cities platform run by the European NetZeroCities project, with the objective of acting as centres of experimentation and innovation to reach climate neutrality by 2030; as well as serving as model for other cities to reach the same goal by 2050.
Since the start of the project, NetZeroCities has supported the 112 cities selected as “Mission Cities”, which have participated in programmes such as the “Pilot Cities Programme” and the “Twinning Learning Programme”.
Cities clasification on NZC project
To formalise this sustainability objective, NetZeroCities project has supported the development of Climate City Contracts in the selected cities. These formalise an agreement between the city, its stakeholders (such as companies, civil organisations and citizens) and the European Commission; setting out clear and specific commitments for 2030 and 2050.
NetZeroCities context
Climate City Contract: a contract through climate neutrality
Climate City Contract (CCC) is an action plan that allows the municipality to define the actions and the public and private municipal actors involved in the development of actions aimed at achieving climate neutrality by 2030 and 2050. This process is iterative and allows for new commitments and periodic evaluation of the measures taken.
Climate City Contract Sections
This document establishes a comprehensive strategy divided into three main lines of intervention, the agreement of the parties called commitments, the strategy for climate neutrality called Action plan and the economic model that supports it, called Investmen plan.
To do, cities must formalise a common commitment among all stakeholders, identifying priority sectors, principles of climate justice and collaboration, and actors committed to the city´s climate goals. It then presents an action plan that assesses the strengths and gaps of existing policies, proposing a portfolio of coordinated interventions that includes an emissions inventory as a starting point and highlights the social benefits of the proposed actions, as well as providing conclusions for future updates of the plan. In this section, Solution Bundles play a crucial role in offering direct solutions to move towards climate neutrality and facilitate the necessary commitments and processes to achieve it in each city together with the stakeholders invovled. Finally, an investment plan is developed that organises public and private resources, analyses past and current investments, identifies barriers and needs, and develops policies to attract capital, mitigate financial risks and build capacity with the active participation of key stakeholders.
NetZeroCities. European Mission Cities
The tool: Solution Bundles
Concept and Description
From CARTIF, the team compound by Rosalía Simón, Ana Belén Gómez , Andrea Gabaldón, Carolina Pastor y Carla Rodríguez, has developed this tool to support cities in the development of their Climate City Contract. Solution Bundles provide combinations of enabling technologies and mechanisms that when implemented together maximise their impact, facilitating the selection of actions aimed at achieving climate neutrality. The aim is to facilitate the visualisation of a comprehensive and effective approach, improving acces to the NetZeroCities Information Repository and the understanding of innovative urban solutions.
In addition, Solution Bundles can be used as a canvas in the work of engaging local stakeholders to increase their participation; they act as an interactive canvas for workshops, facilitating the creation of resources or knowledge between municipalities and other stakeholders.
Packages of actions designed to mitigate climate change and achieve carbon neutrality in cities
The tool has four packages, which allow the selection of diverse technologies through interactive and simple diagrams; as well as presenting this information in relation to the scale of implementation (City, District and Building).
“E-Movility and electrification”: The included solutions on this package are focus on the production of renewable energy and the decarbonization of all sectors through electrification.
“Low-carbon energy via setor coupling”: This package focuses on connecting different sectors through energy systems, applying principles of circular economy and waste reuse.
“Reduction of energy & resources needs”: This package hosts passive solutions focused on reducing energy needs in the built environment, increasing the efficiency of resource and energy utilisation systems.
”Carbon capture, storage & removal”: This package focuses on reducing energy needs through carbon sinks, eliminating residual emissions and using Nature Based Solutions (NBS) to manage the city’s ecosystems and optimise carbon sequestration.
Development of the tool and implementation on the portal
Its development is being carried out in different phases, with the aim of implementing feedback from different users and cities. Initially, it will be focused on helping Mission Cities, but with the aim of supporting all cities in their process towards climate neutrality by 2050.
Currently, the tool is still under development and only two of the four packages are active; they are available on the project’s portal as beta version for Mission Cities.
How to use it?
Choose your approach: Beggin selecting the package you want to focus on: “E-Movility and electrification”, “Low-carbon energy via setor coupling”, “Reduction of energy & resources needs” y ”Carbon capture, storage & removal”.
Filtering options:You can then customise your view by checking or unchecking boxes to show or hide specific areas of the package. This feature helps you focus on the solutions most relevant to your objective, reducing the number of actions presented and making the process more efficient.
Explore solutions: The solutions shown are linked to factsheets in the NetZeroCities Information Repository, related scientific articles and case studies, covering various thematic areas. If you want more information about the technical solutions, you can access to the following link.
Connection to Enabling Mechanisms: At the top of the tool, you will find connections to other resources (Finance, Policy and Governance, and Capacity) for the selected package. These new resources provide information on how to improve the strategic framework where solutions are implemented.
