Energy Watch Group Publications
Scientific Studies & Policy Papers
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2025
Dr. David Jacobs, IET – International Energy Transition | Hans-Josef Fell, President of the Energy Watch Group
Statement on the Legislative Consultation Process
Enabling Ukraine to Rapidly Overcome the Ongoing Energy Crisis:
Paving the Way for RE Self-Consumption and Energy Sharing in Line with EU Regulation
Berlin
September 2025
Heinrich Strößenreuther | Franziska Pausch | Hans-Josef Fell | Prof. emer. Victor Smetacek | Frank Schweikert
Cooling our planet with ocean farming
CO₂ removal as the third pillar of climate protection
Berlin / Hammelburg / Hamburg / Bremen / Bremerhaven
July 2025
Dr. Hartmut Fischer | Jörn Schwarz | Hans-Josef Fell
1,5 °C warming permanently exceeded
Immediate end to fossil fuel investments is profitable and necessary
Berlin, May 2025
2024
Dr. Hartmut Fischer
Roadmap to a CO₂-neutral Germany
Cost-effective, budget-neutral and socially balanced
Berlin, December 2024
Energy Watch Group
The urgent need for rapid transition to 100% renewable energy
Berlin, November 2024
Energy Watch Group / Flexperten
Power plant strategy and flexible biogas storage power plants
In-depth key data
Berlin / Kassel, Mai 2024
Hans-Josef Fell | Heinrich Strößenreuther
Hydropower – the new gamechanger for climate mitigation, domestic energy and water ecology
Study
Berlin / Hammelburg
März 2024
Shaping the German power plant strategy
The alternatives to new natural gas power plants cost less, are faster and CO2-free
Policy Paper
Berlin, March 2024
2023
Dr. Thure Traber, Linda Rasche, Patrick Hohlwegler, H.-J. Fell
With the involvement of Baro Vicenta Ra Gabbert.
Long-term scenarios of the federal government inadequate: Climate neutrality by 2045 is too late – costs are too high, and the growth rate for renewable energies is set too low.
Study
Berlin, October 2023
Lu Yen Roloff, Fell, H.-J.
Climate – Environment – Health
Policy Paper
Berlin, Oktober 2023
2022
Traber, T.; Fell, H.-J.
Small hydropower and bioenergy are indispensable for the energy transition and the necessary exit from Russian energy
Policy Paper
Berlin, June 2022
Gruber, G.; Fell, H.-J.
The end of biofuel production planned by parts of the federal government harms the rainforest and energy and food security
Policy Paper
Berlin, May 2022
Fell, H.-J.
Statement on the revision of the Swiss Energy Act and the Electricity Supply Act
Policy Paper
Berlin, March 2022
Fell, H.-J.; T. Traber
How many wind turbines does Germany need for a full supply of 100% renewable energies?
Short Analysis
Berlin, February 2022
Welteke-Fabricius, U.; Fell, H.-J.
Securing the energy transition with local storage power plants and sustainable biomass for structural change and climate protection in agriculture
Policy Paper
Kassel/Berlin, February 2022
2021
Traber, T., Fell, H.-J.
100% Renewable Energy for Berlin-Brandenburg by 2030
Study
Berlin, December 2021
German | Executive Summary (DE) | Executive Summary (ENG) | Website
Traber, T., Fell, H.-J., Marquitan, S.
A full supply with 100% renewable energies including storage is already competitive today and would reduce energy costs
Short Study
Berlin, October 2021
Traber, T., Fell, H.-J., Hegner, F. S.
An economically viable 100% renewable energy system for all energy sectors of Germany in 2030
Journal Article
Berlin/Garching, September 2021
Article ENG | Supplementary Data (Excel file)
Traber, T., Fell, H.-J., Hegner, F. S.
100% renewable energies for Germany by 2030
EWG Study
Berlin, May 2021
Full Study GER | Executive Summary GER | Executive Summary ENG | Questions & Answers GER
2020
Fell, H.-J., Traber, T.
The path to climate neutrality by 2050 misses the Paris climate targets. The rocky road to truthfulness in climate politics.
EWG Policy Paper
Berlin, December 2020
Jacobs, D., Grashof, K., Del Río, P., Fouquet, D.
The Case for a Wider Energy Policy Mix in Line with the Objectives of the Paris Agreement
Study commissioned by EWG, World Future Council/Global Renewables Congress & Haleakala Foundation
Berlin, December 2020
English | Press Release ENG | Press Release GER | Executive Summary ENG | Executive Summary GER
Traber, T., Fell, H.-J.
Key points of a legislative initiative for reliable and adequate renewable energy supply. Sector coupling and Innovation Act for Renewable Energy (SCIA)
EWG Policy Paper
Berlin, May 2020
Valentin, F., von Bredow, H.
Legal statement on the compatibility of a combined power plant tariff or premium with EU law
Legal Statement commissioned by EWG
vBVH Partnerschaft von Rechtsanwälten mbB
Berlin, March 2020
Traber, T., Fell, H.-J., Schmäling, N.
100% Renewable Energy for all Energy Sectors: An Optimization for the County of Bad Kissingen.
EWG Regional Study
Berlin, March 2020
2019
Traber, T., Fell, H.-J.
Natural Gas makes no Contribution to Climate Protection.
EWG Study
Berlin, September 2019
Fell, H.-J., Traber, T.
Sectoral Greenhouse Gas Emissions Worldwide
EWG Short Analysis
Berlin, August 2019
Jacobs, D.
GET FIT for Ukraine. Advanced Funding Options for Renewable Energy Projects.
Study by IET – International Energy Transition & EWG
Commissioned by State Agency on Energy Efficiency and Energy Saving of Ukraine.
Berlin, July 2019
Ram M., Bogdanov D., Aghahosseini A., et al.
Global Energy System Based on 100% Renewables. Power, Heat, Transport and Desalination Sectors.
Study by EWG & Lappeenranta University of Technology (LUT)
Funded by Deutsche Bundesstiftung Umwelt & Stiftung Mercator
Lappeenranta / Berlin, April 2019
| Summaries, Key Findings, Presentations & Data (English, German, French Mandarin, Russian & Spanish)
H.-J. Fell
The Shift from Feed-In-Tariffs is Hindering the Transformation of the Global Energy Supply to Renewable Energies.
EWG Policy Paper
Berlin, March 2019
2018
Ram M., Bogdanov D., Aghahosseini A., et al.
Global Energy System based on 100% Renewable Energy – Energy Transition in Europe Across Power, Heat, Transport and Desalination Sectors.
Study by EWG & Lappeenranta University of Technology (LUT)
Funded by Deutsche Bundesstiftung Umwelt & Stiftung Mercator
Lappeenranta / Berlin, December 2018
English | Key Findings, Presentations & Data (English, German, French, Spanish, Russian)
Riedl W., Fell, H.-J.
Erneuerbare Energien – die tragende Säule für die CO₂-Emissionsreduktion in Deutschland.
EWG Study
Berlin, September 2018
Fell H.-J., Stegen E.
The Disaster of the European Nuclear Industry
EWG Study
Berlin, March 2018
Fell H.-J.
Policy Recommendations to Achieve 100% Renewable Energy
EWG Policy Paper
Berlin, January 2018
2017
Ram M., Bogdanov D., Aghahosseini A., et al.
Global Energy System based on 100% Renewable Energy – Power Sector
Study by EWG & Lappeenranta University of Technology (LUT)
Funded by Deutsche Bundesstiftung Umwelt (DBU) & Stiftung Mercator
Lapeenranta/Berlin, November 2017
English | Key Findings | Executive Summary | Presentation | Supplementary Data
Fell, H.-J.
International Energy Agency still gets its World Energy Outlook wrong
EWG Study
Berlin, November 2017
| German
Fell, H.-J.
The Shift from Feed-In-Tariffs to Tenders is Hindering the Transformation of the Global Energy Supply to Renewable Energies
EWG Policy Paper
Commissioned by IRENA (International Renewable Energy Agency)
Berlin, July 2017
| German
Child M., Breyer C., Bogdanov D., Fell H.-J.
The Role of Storage Technologies for the Transition to a 100% Renewable Energy System in Ukraine
EWG Conference Paper
11th International Renewable Energy Storage Conference
Düsseldorf, March 2017
Energy Watch Group
India, Iran and Nigeria can Switch to 100% Renewable Electricity by 2050
EWG Policy Brief
Berlin / Laapeenranta, March 2017
Fell, H.-J.
Energy Sector in Ukraine: Challenges and Chances
EWG Policy Brief
Berlin, January 2017
2016
Energy Watch Group
The International Energy Agency undermines global climate protection and energy security in its latest World Energy Outlook
EWG Policy Paper
Berlin, November 2016
Schwarz, J., Fell, H.-J.
German Climate Policy – From Trailblazer to Decelerator
Study by ASPO Deutschland & EWG
Berlin, November 2016
Energy Watch Group
International Energy Agency’s Renewables Forecast: Old Wine in New Bottles
EWG Policy Paper
Berlin, October 2016
Breyer, C., Gulagi, A., Fell, H.-J.
Sustainable and Low-Cost Energy System for India without Nuclear and Coal Base Load
EWG Study
Berlin, September 2016
2015
Breyer, C., Fell, H.-J., Zittel, W.
IEA creates misleading future scenarios for solar power generation
EWG Policy Brief
Berlin, November 2015
Metayer, M., Breyer, C., Fell, H.-F.
The projections for the future and quality in the past of the World Energy Outlook for solar PV and other renewable energy technologies
Study by EWG & Laapeenranta University of Technology
Berlin / Laapeenranta, November 2015
Zittel, W.
Fracking – An Interim Review
Study by EWG & Ludwig Bölkow Stiftung
Berlin, March 2015
German | Executive Summary ENG
2014
Zittel, W., Fell, H.-J.
The EU’s dependency on Russia for natural gas can only be reversed with a rapid expansion of renewable energy sources.
EWG Study
Berlin, April 2014
2013
Zittel, W., Zerhusen, J., Fell, H.-J.
Fossil and Nuclear Fuels – the Supply Outlook
EWG Study
Berlin, March 2013
2010
Zittel, W.
Worldwide Estimated Yearly Energy Costs
EWG Study
Berlin, March 2010
2008
Rechsteiner, R.
Wind Power in Context – A clean Revolution in the Energy Sector
EWG Study
Berlin, December 2008
Schindler, J., Zittel, W.
Crude Oil – The Supply Outlook
EWG Study
Berlin, February 2008
Peter, S., Lehmann, H.
Renewable Energy Outlook 2030: Energy Watch Group Global Renewable Energy Scenarios
Study commissioned by EWG & World Council for Renewable Energy (WCRE), Supported by Ludwig-Bölkow-Stiftung
iSuSI Sustainable Solutions and Innovations
Berlin, February 2008
2007
Schindler, Z., Zittel, W.
Coal: Resources and Future Production
EWG Study
Berlin, March 2007
2006
Schindler, Z., Zittel, W.
Uranium Resources and Nuclear Energy
EWG Study
Berlin, December 2006