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The Estonia Presentation

Webseminar at University Estonia

Today‘s energy situation & future CO2 - development
Importance of energy efficiency
Global population development & energy justice
Portfolio of energy resources
Future energy picture – wind – all other RE - solar
Need for and different types of electricity storage
Inertia fusion technology as potential addition
Summary & conclusion.

Download: 231201_Estonia_as_presented.pdf


Sustainability bonds to allow investment in Africa into renewable energy in order to prevent energy injustice and reach the Paris climate goal

My contribution for the EUTECH online conference

  • Africa - the continent with most people in the coming decades
  • Energy justice - to prevent migration with unprecedented numbers
  • An ideal case would be the investment into electrification with renewables (PV, wind and storage) - and NOT in fossil technologies > loans needed!
  • Necessaty for a joint undertaking between Europe and Africa:
    „PPP" (Public money to secure the loans), Private money from various stakeholders for the loans, Partnership agreement between African states together with their utilities and European states together with their financing institutions (e.g. KfW, EIB, …)
  • Sustainability bonds as vehicle to execute the PPP

Download: 231220_EUTECH_ESG_Afrika_online_Präsentation.pdf


Globale Energiegerechtigkeit und das Pariser Klimaziel

Notwendigkeit für neue Finanzierungsmodelle

Die heutige Welt ist geprägt von einer großen Ungerechtigkeit der Energieverteilung in den reichen und armen Ländern, aber für alle ist die Notwendigkeit einer schnellen Umsetzung für eine CO2 - freie Welt bis 2050 gemäß dem Pariser Klimaziel überlebenswichtig. Beide Herausforderungen lassen sich meistern, wenn die reichen Länder ihre moralische Verpflichtung erfüllen, den armen Ländern mit geeigneten Finanzierungsinstrumenten die Möglichkeit zu erlauben, statt in fossile in erneuerbare Technologien zu investieren. Ein mögliches Finanzierungsmodell mit den notwendigen Änderungen der heutigen Kreditvergabe wird dargestellt. Die heute um einen Faktor 5 höheren Investitionskosten für Batterie und Stromspeicherung im Vergleich zu Kohlekraftwerken führen ohne Unterstützung zur Installation von fossilen Kraftwerken, mit unvorhersehbaren Folgen für uns alle.

Download: 221130_Energiegerechtigkeit und Parisziel_HWB_WH.pdf




This paper highlights that without appropriate long-term financing schemes most investments for energy supply in countries like Africa, India and South America unfortunately will be undertaken in fossil technologies. The simple reason is the fact that the investment necessary for a given quantity of energy per year is by a factor of ~5 less for fossil compared to renewable technologies. In an "ideal" world - zero Carbon emissions and equal energy per capita globally in the 2050s - the needed investments are 1,700 bn € annually starting in 2025 with a peak of 2,500 bn € in the mid-2030s and going to zero in the 2060s. Two additional scenarios...

Download: 220926_WCPEC 8_Milano_Africa_India_SA_RE investment.pdf


Opportunities and Threats for new and old Economies

WREC Lisbon - "Zero Carbon World"

First a rationale is given why we need a "Zero Carbon world" and why this will cause an energy as well as an industry transition. Second it is identified what is necessary as a future economy for not only to stay competitive with existing technologies but even more to participate in tomorrow's big industries in an international environment. With two case studies, photovoltaics and batteries, Germany as example for an old economy and China for a new economy it is concluded that old economies cannot rest on their successful old industries and if they do, new economies can kick-start new industries with appropriate boundary conditions and take the global lead.

Download: 200914_WREC_Lisbon_Opport and threads for new and old economies.pdf


Smart houses and regions as building blocks for 100% renewable energy globally

31. July 2018

This paper gives evidence that in contrast to the old big and centralized approach with large power stations there is now a solution possible which starts bottom-up. Individual houses are no longer only consuming electricity but will also produce electricity with PV systems on their roof - they become pro-sumers. The same happens with multi-family houses, offices and SME's...

Download: 180731_WREC_Kingston_Smart houses and regions.pdf


Photovoltaics as a Major Contributor to the Future Global Energy Needs and a 100% Renewably Powered World

Donnerstag, 12. Januar 2017

book chapter in Springer (2017), page 55 - 93, Ali Sayigh (editor), ISBN 978-319-39280-6

The summary of the book chapter can be downloaded here 170131_Springer_W_Hoffmann_chapter.pdf


PV as a Major Contributor to the 100% Renewably Powered World and Solving the Climate Battle

Montag, 05. Dezember 2016

Paper based on a presentation given at World Renewable Energy Council, conference in Bahrain on 5th December 2016

Download: 161231_Bahrain_PV_major_contributor_for_a_100_RE_world.pdf


Die weltweite Energieversorgung mit 100% Erneuerbaren Energien

Vortrag an der HTWG Konstanz am 27. Februar 2015

  • Weltweiter Energieverbrauch heute
  • Energieeffizienzmaßnahmen
  • Zukünftige Weltbevölkerung und fairer Energiebedarf
  • Die wichtigsten Erneuerbaren Energietechnologien: Wind, Wasser, Bioenergie, Solarthermie (Wärme und Strom), Photovoltaik
  • Historisches und künftiges Wachstum PV Markt, Preisentwicklung, Preis-Erfahrungs-Kurven, Speicherung
  • „Nachhaltiges“ Portfolio der Erneuerbaren Energien
  • Zukünftige Versorgung mit 100% EE

Download: 150227_HTWG_Konstanz.pdf


The Economic Competitiveness of Renewable Energy - Pathways to 100% Global Coverage

Winfried Hoffmann, Wiley/Scrivener Publishing, ISBN 978-1-118-23790-8

It is the pretension of this book to give a comprehensive picture of today’s energy world, to describe the potential for energy savings which can be achieved and to get an understanding of technology development which will lead to a 100% renewably powered world as the most likely situation. This is based on the long-term economic and ecological superiority of renewables over traditional energy sources. It is the combination of these topics which makes the book unique.

The INTRODUCTION (Chapter 1) starts with a description of a general phenomenon, namely the fundamental changes taking place in the world we are living in today.
The ANALYSIS OF TODAY’S ENERGY SITUATION (Chapter 2) first describes basic energy terms for those who are not experts in this field.

The IMPORTANCE OF EFFICIENCY MEASURES (Chapter 3) has nothing to do with renewable technologies but the measures described will help a lot to achieve a 100% renewable contribution sooner rather than later.

An OVERVIEW OF THE MOST IMPORTANT RENEWABLE ENERGY TECHNOLOGIES (Chapter 4) starts with an outline of the huge potential of renewable energy resources and describes in some detail the most important renewable technologies.

The PV MARKET DEVELOPMENT (Chapter 5) not only describes the increase of PV installations over time but also addresses the boundary conditiones for new products to enter the market.

The PV VALUE CHAIN AND TECHNOLOGY (Chapter 6) summarizes the various PV technologies c-Si wafer and Thin-Film in greater detail, but also describes concentrated PV, Dye solar cells and organic devices.

THE ASTONISHING PREDICTIVE POWER OF PRICE EXPERIENCE CURVES (Chapter 7) shows impressively what even research and industry people from the same technology sector could often not believe.

The FUTURE TECHNOLOGY DEVELOPMENT (Chapter 8) is discussed for all renewable technologies. The potential price development is based on the respective Price Experience Curve.

For FUTURE ENERGY PROJECTIONS – THE 150 PW-HOUR CHALLENGE (Chapter 9), some well-known projections from the IEA and Greenpeace are shown for reference. The market development for the various renewables and their potential market share are described in some detail.

The LIKELIHOOD AND TIMELINE FOR A WORLD POWERED BY 100% RENEWABLES (Chapter 10) deals with the potential development. In CONCLUSION: THE 100% RENEWABLE ENERGY PUZZLE (Chapter 11) summarizes the findings and discussions from this book in form of a 3 by 3 element puzzle.

Download: 140322_Wiley_book_Economic_competitiveness_of_renewable_energy.pdf

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