David Elliott - Renewable Energy

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The use of renewables is spreading rapidly. Over a quarter of global electricity is already generated from solar, wind, hydro and biomass energy. With costs falling significantly, renewables are booming, helping to avoid the major climate change risks associated with fossil fuel use in power stations, homes and vehicles. But can we get rid of all of these dirty energy sources – and nuclear power, as well – and deliver 100% of our energy from renewables? Or are renewable energy systems inherently unreliable and expensive, given the need to deal with their variability? <br /><br />In this timely analysis, leading energy expert David Elliott tackles these issues head on and asks to what extent renewables can deliver a technologically and economically viable energy future. Exploring both the progress and problems of renewables against a backdrop of rising energy demand, he argues that, on balance, they do seem to be living up to their promises. With renewables rapidly expanding across the globe, and China now leading the pack, a renewable future could really be on the horizon.

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Contents

1 Dedication Dedication To Godfrey Boyle, a friend, colleague and visionary, much missed

2 Title page Renewable Energy Can it Deliver? David Elliott polity

3 Copyright page Copyright page Copyright © David Elliott 2020 The right of David Elliott to be identified as Author of this Work has been asserted in accordance with the UK Copyright, Designs and Patents Act 1988. First published in 2020 by Polity Press Polity Press 65 Bridge Street Cambridge CB2 1UR, UK Polity Press 101 Station Landing Suite 300 Medford, MA 02155, USA All rights reserved. Except for the quotation of short passages for the purpose of criticism and review, no part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission of the publisher. ISBN-13: 978-1-5095-4163-8 ISBN-13: 978-1-5095-4164-5 (pb) A catalogue record for this book is available from the British Library. Library of Congress Cataloging-in-Publication Data Names: Elliott, David, 1943- author. Title: Renewable energy : can it deliver? / David Elliott. Description: Cambridge, UK ; Medford, MA, USA : Polity, 2020. | Includes bibliographical references and index. | Summary: “An incisive introduction to renewable energy and its global expansion”-- Provided by publisher. Identifiers: LCCN 2019052504 (print) | LCCN 2019052505 (ebook) | ISBN 9781509541638 | ISBN 9781509541645 (pb) | ISBN 9781509541652 (epub) Subjects: LCSH: Renewable energy sources. Classification: LCC TJ808 .E453 2020 (print) | LCC TJ808 (ebook) | DDC 333.79/4--dc23 LC record available at https://lccn.loc.gov/2019052504 LC ebook record available at https://lccn.loc.gov/2019052505 The publisher has used its best endeavours to ensure that the URLs for external websites referred to in this book are correct and active at the time of going to press. However, the publisher has no responsibility for the websites and can make no guarantee that a site will remain live or that the content is or will remain appropriate. Every effort has been made to trace all copyright holders, but if any have been overlooked the publisher will be pleased to include any necessary credits in any subsequent reprint or edition. For further information on Polity, visit our website: politybooks.com

4 Acknowledgements Acknowledgements Thanks for some criticism, advice and input from Tam Dougan, editor of the long-running Renew newsletter, previously based at the Open University and now run independently.

5 Boxes

6 Abbreviations Abbreviations BECCSbioenergy with carbon capture and storageBECCUbioenergy with carbon capture and utilizationCCScarbon capture and storageCCUcarbon capture and utilizationCHPcombined heat and powerCO2carbon dioxideCSPconcentrated solar powerDACSdirect air capture and storageEROEIenergy return on energy investedGDPgross domestic productIEAInternational Energy AgencyIRENAInternational Renewable Energy AgencyLNGliquid natural gasLUT/EWGLappeenranta University of Technology/Energy Watch GroupNETnegative emissions technologyNGOnon-governmental organizationP2Gpower-to-gasPVphotovoltaic solar powerREN21Renewable Energy Network for the 21st CenturyWECWorld Energy Council

7 Preface Preface The use of renewable energy is spreading rapidly, and some claim that wind, solar and other renewables can and will become the dominant global energy sources within a few decades, thus avoiding major climate change problems. Concerns about climate change have been a key driver, leading to growing government support. However, the falling cost of renewable energy has also become a major driver. Some renewable energy technologies are now competitive across the board and costs continue to fall, with a new commercial dynamic adding impetus to their uptake. This book asks whether that trend will be sufficient to ensure that renewables expand fast enough globally to limit climate change to survivable levels without imposing high costs. There are certainly many who doubt that this is possible. Some critics argue that renewable energy systems are inherently unreliable and expensive, and they look to nuclear power as an alternative non-fossil option, and possibly also to cleaning up fossil fuel use. This book seeks to meet these claims head on and asks to what extent renewables can deliver a technologically and economically viable energy future, and whether other technical options and energy policies to support them are also needed. It explores how important renewable energy technology might be by looking at its progress so far and at its future potential and problems in a context where other approaches are also on offer. Much has been promised from renewables and, so far, they seem to be living up to the promises as they accelerate ahead. This book looks at whether that can and will continue.

8 1 Introduction: All Change? 1 Introduction: All Change? Renewables are no longer marginal but have become mainstream. This introductory chapter asks what has driven their recent success – and can it continue?

9 2 The Renewable Transition 2 The Renewable Transition To set the scene, this chapter looks in outline at the key renewable options and systems, their potentials, costs and problems. It reviews the basic issues of choice at stake and also looks at how rapidly the options might be deployed.

10 3 Energy Technologies for the Future

11 4 System Development: Tying It All Together

12 5 The Limits to a Sustainable Future

13 6 The Geopolitics of the Transition

14 7 Global Action

15 8 Conclusions

16 References

17 Index

18 End User License Agreement

Guide

1 Cover

2 Contents

3 1 Introduction: All Change? 1 Introduction: All Change? Renewables are no longer marginal but have become mainstream. This introductory chapter asks what has driven their recent success – and can it continue?

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