<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE article  PUBLIC "-//NLM//DTD Journal Publishing DTD v3.0 20080202//EN" "http://dtd.nlm.nih.gov/publishing/3.0/journalpublishing3.dtd"><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" dtd-version="3.0" xml:lang="en" article-type="research article"><front><journal-meta><journal-id journal-id-type="publisher-id">EPE</journal-id><journal-title-group><journal-title>Energy and Power Engineering</journal-title></journal-title-group><issn pub-type="epub">1949-243X</issn><publisher><publisher-name>Scientific Research Publishing</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.4236/epe.2017.99033</article-id><article-id pub-id-type="publisher-id">EPE-78606</article-id><article-categories><subj-group subj-group-type="heading"><subject>Articles</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Engineering</subject></subj-group></article-categories><title-group><article-title>
 
 
  Editorial Special Issue on “Energetic Complementarity”
 
</article-title></title-group><contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Alexandre</surname><given-names>Beluco</given-names></name><xref ref-type="aff" rid="aff1"><sub>1</sub></xref></contrib></contrib-group><aff id="aff1"><label>1</label><addr-line>Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil</addr-line></aff><author-notes><corresp id="cor1">* E-mail:</corresp></author-notes><pub-date pub-type="epub"><day>22</day><month>08</month><year>2017</year></pub-date><volume>09</volume><issue>09</issue><fpage>486</fpage><lpage>488</lpage><history><date date-type="received"><day>January</day>	<month>25,</month>	<year>2017</year></date><date date-type="rev-recd"><day>Accepted:</day>	<month>August</month>	<year>19,</year>	</date><date date-type="accepted"><day>August</day>	<month>22,</month>	<year>2017</year></date></history><permissions><copyright-statement>&#169; Copyright  2014 by authors and Scientific Research Publishing Inc. </copyright-statement><copyright-year>2014</copyright-year><license><license-p>This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/</license-p></license></permissions><abstract><p>
 
 
  This editorial presents the motivations that were the focus of the papers that make up this Special Issue on energetic complementarity. The articles deal with the application of the concept of energetic complementarity in time under certain conditions and with the proposition of new means to evaluate complementarity in time between more than two renewable energy resources. An article further proposes a method for establishing energetic complementarity in space, a concept that is important and necessary for management and planning of energy resources but does not yet have tools that allow it to be quantified and handled appropriately. In addition, two letters to the editor discuss issues that still need to be matured for a better understanding and application of the concept of energetic complementarity, both in time and space.
 
</p></abstract><kwd-group><kwd>Component: Energetic Complementarity</kwd></kwd-group></article-meta></front><body><sec id="s1"><title>Acknowledgements</title><p>This work (including this paper and the organization of this special issue) was developed as a part of research activities on water resources management and renewable energy at the Instituto de PesquisasHidr&#225;ulicas (IPH), Universidade Federal do Rio Grande do Sul (UFRGS). The author acknowledges the support received by the institution and the financial support received from CNPq for his research work (proc. n. 309021/2014-6.).</p></sec><sec id="s2"><title>Cite this paper</title><p>Beluco, A. (2017) Editorial Special Issue on “Energetic Complementarity”. Energy and Power Engineering, 9, 486-488. https://doi.org/10.4236/epe.2017.99033</p></sec></body><back><ref-list><title>References</title><ref id="scirp.78606-ref1"><label>1</label><mixed-citation publication-type="book" xlink:type="simple">Beluco, A., Souza, P.K., Livi, F.P. and Caux, J. (2015) Energetic Complementarity with Hydropower and the Possibility of Storage in Batteries and Water Reservoirs. In: Sorensen, B., Ed., Solar Energy Storage, Academic Press, London, 155-158.  
https://doi.org/10.1016/B978-0-12-409540-3.00007-4</mixed-citation></ref><ref id="scirp.78606-ref2"><label>2</label><mixed-citation publication-type="other" xlink:type="simple">Beluco, A., Souza, P.K. and Krenzinger, A. (2008) A Dimensionless Index Evaluating the Time Complementarity between Solar and Hydraulic Energy. Renewable Energy, 33, 2157-2165. https://doi.org/10.1016/j.renene.2008.01.019</mixed-citation></ref><ref id="scirp.78606-ref3"><label>3</label><mixed-citation publication-type="other" xlink:type="simple">Cantao, M.P., Bessa, M.R., Bettega, R., Detzel, D.H.M. and Lima, J.M. (2017) Evaluation of Hydro-Wind Complementarity in the Brazilian Territory by Means of Correlation Maps. Renewable Energy, 101, 1215-1225.  
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