This Clean Energy Technology Observatory report analyses the current status and development trends of solar thermal energy, including both concentrated solar power (CSP) and solar heat for buildings, district heating, and industrial processes. While CSP has developed to a commercial scale, up to...

This report provides an update on the state of the art of heat pump technology, including its application in buildings, industry, and district heating and cooling. It presents installed capacity, sales and projections, and an analysis of research and development trends. It also discusses EU...

This report provides an overview of the current status, value chains and market positions of carbon capture utilisation and storage (CCUS) technologies in the EU as well as globally. In 2023, the CCUS industry experienced unprecedented growth globally, with all the projects under development...

This report is an output of the Clean Energy Technology Observatory (CETO). CETO's objective is to provide an evidence-based analysis feeding the policy making process and hence increasing the effectiveness of R&I policies for clean energy technologies and solutions. It monitors EU research and...

Ocean energy has been acknowledged in the context of the European Energy Union as a fundamental research and development priority to achieve the 2050 climate objectives. The European Green Deal, which aims to make Europe the first climate-neutral continent, included ocean energy in the...

The aim of this report is to provide an update of the state of the art of wind energy technology. This includes utility-scale onshore and offshore wind and, when available, selected findings on technologies at a lower maturity level. Research and development trends are analysed, focussing...

As part of the Clean Energy Technology Observatory (CETO), this report on Photovoltaics (PV) is built on three sections: the technology state of the art, future developments and trends, the value chain analysis and the EU position and global competitiveness. PV is the fastest-growing source of...

This report investigates the status and trend of Renewable Fuels of Non-Biological Origin (RFNBO), except hydrogen, which are needed to cover part of the EU's demand for low carbon renewable fuels in the coming years. The report is an update of the CETO 2023 report. Most of the conversion...

This report is an output of the Clean Energy Technology Observatory (CETO), and provides an evidence-based analysis of the overall battery landscape to support the EU policy making process. It is part of the series of reports on clean energy technologies needed for the delivery of the European...

This annual CETO report provides an overview of technological trends and market issues on selected topics regarding the electricity grid and the "smart grid of the future". The analysis this year focuses on grid infrastructure, since the physical grid assets are increasingly being recognized as...

This report is part of the 2024 Clean Energy Technology Observatory series and is focusing on smart thermal networks within the European Union. It provides an overview of the current status, emerging trends, and the potential of this sector integration technology. Smart thermal networks...

This report analyses the technology status, value chain and markets of energy storage technologies which are considered 'novel'. While most of the technologies covered are still in the research phase and therefore fall into the novel category, some classic energy storage technologies are also...

The report provides a detailed examination of the bioenergy sector within the European Union (EU), highlighting its significance in the global context and its role in the transition towards a low-carbon economy. The report is an update of the CETO 2023 report. The report offers insights into the...

The EU's geothermal energy sector, although small, has considerable potential to support the bloc's energy transition. This annual update report highlights the status of both power and direct heat applications, covering technology development, value chains, and markets. Despite being a...

As the global energy transition gains momentum and the demand for electrical energy storage rises, decision-makers face the challenge to select the most suitable storage technology. This thesis presents a comprehensive techno-economic analysis of electrical energy storage technologies for...

What happens to the merit order of electricity markets when all electricity is supplied by intermittent renewable energy sources coupled with large-scale electricity storage? With near-zero marginal cost of production, will there still be a role for an energy-only electricity market? We answer...

Despite a 30-year long history, Renewable Portfolio Standards (RPS) remain controversial and debates continue to surround their efficacy in leading the low-carbon transition in the electricity sector. Contributing to the ongoing debates is the lack of definitive causal evidence on their impact...

This report analyses the technology status, value chain, and markets of novel thermal energy storage (TES) technologies. While most technologies currently have low technology readiness levels, they hold substantial potential for storing energy at low costs in the future. TES technologies are...

Ocean energy has been acknowledged in the context of the European Energy Union as a fundamental research and development priority to achieve 2050 climate objectives. The European Green Deal included ocean energy in the technologies necessary toward a transition to climate neutrality. The aim of...

This report is part of the 2023 Clean Energy Technology Observatory series and is focusing on smart thermal networks within the European Union (EU). It provides an overview of the current status, emerging trends, and the potential of this sector integration technology. Smart thermal networks...

Secure and reliable operation of power systems with high wind and solar shares requires system flexibility. In this paper, an hourly-based market and grid simulation model is developed to assess security and reliability of a power system with high wind and solar energy share. The model is...

Despite a 30-year long history, Renewable Portfolio Standards (RPS) remain controversial and debates continue to surround their efficacy in leading the low-carbon transition in the electricity sector. Contributing to the ongoing debates is the lack of definitive causal evidence on their impact...