{"id":22850,"date":"2018-12-20T14:44:14","date_gmt":"2018-12-20T13:44:14","guid":{"rendered":"https:\/\/www.vergnet-hydro.com\/vh\/?p=22850"},"modified":"2019-01-03T13:45:17","modified_gmt":"2019-01-03T12:45:17","slug":"peut-on-rever-du-tout-solaire","status":"publish","type":"post","link":"https:\/\/www.vergnet-hydro.com\/vh\/peut-on-rever-du-tout-solaire\/","title":{"rendered":"Voeux du Pr\u00e9sident: Peut-on r\u00eaver du tout solaire? Et, \u00e0 quel horizon?"},"content":{"rendered":"<p>La volont\u00e9 d\u2019am\u00e9liorer le service de l\u2019eau dans les petits villages d\u2019Afrique incite de plus en plus d\u2019acteurs \u00e0 vouloir se tourner davantage vers le pompage solaire \u00e0 la place du pompage manuel. L\u2019objectif est louable, car visant \u00e0 faciliter la vie des utilisateurs \u00e0 travers une solution technique plus moderne. Cependant, \u00e0 l\u2019heure o\u00f9 l\u2019on met en avant la durabilit\u00e9 des syst\u00e8mes, il n\u2019est pas inutile d\u2019analyser les choses en combinant les \u00e9l\u00e9ments techniques et \u00e9conomiques simultan\u00e9ment plut\u00f4t que de les regarder ind\u00e9pendamment.<\/p>\n<h3>L&#8217;\u00e9nergie solaire : une \u00e9nergie \u00e0 durabilit\u00e9 limit\u00e9e<\/h3>\n<p>La gratuit\u00e9 et la disponibilit\u00e9 infinie, \u00e0 l\u2019\u00e9chelle humaine, de l\u2019\u00e9nergie solaire sont des conditions n\u00e9cessaires \u00e0 la durabilit\u00e9 des syst\u00e8mes sans pour autant \u00eatre suffisantes :<\/p>\n<ul>\n<li>Sur le plan technique tout d\u2019abord. M\u00eame si les panneaux solaires offrent une garantie, dont la mise en \u0153uvre reste complexe, de 25 ans sur le maintien de 80% de leur taux de productivit\u00e9, les autres composants du syst\u00e8me offrent, au mieux, des garanties de 1 \u00e0 2 ans avec des dur\u00e9es de vie qui restent aujourd\u2019hui \u00e0 d\u00e9terminer. Le remplacement de ces composants doit imp\u00e9rativement \u00eatre pris en compte.<\/li>\n<li>Sur le plan \u00e9conomique, au-del\u00e0 de l\u2019investissement qui reste plus cons\u00e9quent que pour des pompes manuelles, remplacer les \u00e9l\u00e9ments techniques pr\u00e9c\u00e9dents et confier n\u00e9cessairement l\u2019exploitation \u00e0 un professionnel ont un co\u00fbt devant \u00eatre support\u00e9 par les usagers donc par le prix de vente du service de l\u2019eau.<\/li>\n<\/ul>\n<h3>Fiabilit\u00e9 et viabilit\u00e9: les conditions d&#8217;un service de l&#8217;eau<\/h3>\n<p>Si les co\u00fbts de maintenance des pompes manuelles sont relativement bien ma\u00eetris\u00e9s aujourd\u2019hui, leur couverture par la vente du service de l\u2019eau reste d\u00e9pendante du d\u00e9ploiement de solutions techniques fiables et de syst\u00e8mes de gestion optimis\u00e9s. L\u2019estimation des co\u00fbts d\u2019exploitation d\u2019un syst\u00e8me solaire doit donc \u00eatre d\u00e9termin\u00e9e ainsi que l\u2019impact de l\u2019am\u00e9lioration du service sur les consommations.<\/p>\n<p>Le maintien d\u2019un tarif abordable du prix de vente du service de l\u2019eau \u00e9tant en effet n\u00e9cessaire afin de n\u2019exclure personne, la viabilit\u00e9 et l\u2019\u00e9quilibre \u00e9conomique du syst\u00e8me se jouent bien entre les co\u00fbts d\u2019exploitation et les consommations du point d\u2019eau.<\/p>\n<p>Envisager le remplacement syst\u00e9matique des pompes manuelles par des pompes solaires sans r\u00e9soudre cette probl\u00e9matique serait au mieux hasardeux, au pire catastrophique. Dans ces conditions, comment parler de durabilit\u00e9 si l\u2019on fait abstraction de l\u2019\u00e9quation \u00e9conomique du syst\u00e8me ? Ne serions-nous pas l\u00e0 en train de reproduire les erreurs du pass\u00e9 ?<\/p>\n<h3>Une \u00e9quation \u00e0 r\u00e9soudre technologiquement et \u00e9conomiquement<\/h3>\n<p>L\u2019\u00e9nergie solaire est certes une solution d\u2019avenir pour l\u2019Afrique mais qui n\u2019a rien de miraculeux. Il faut garder une approche rationnelle et surtout qualifier les limites \u00e9conomiques du mod\u00e8le. Nos estimations, bas\u00e9es sur les technologies solaires et les consommations moyennes actuelles, nous laissent pour le moment sceptiques sur la viabilit\u00e9 \u00e9conomique des solutions solaires pour les plus petits centres de quelques centaines, voire quelques milliers d\u2019habitants. Forts de notre exp\u00e9rience, de celles de nos partenaires et de nos constats au quotidien aupr\u00e8s des usagers, nous cherchons actuellement des solutions pour r\u00e9soudre cette difficile \u00e9quation et d\u00e9terminer le seuil et les conditions de viabilit\u00e9 de ces syst\u00e8mes. C\u2019est \u00e0 cette seule condition que l\u2019on pourra \u00e9tendre plus largement, et ce sans compromettre la durabilit\u00e9 des syst\u00e8mes et des services, les solutions de pompage solaire y compris dans les petits villages de 400 habitants.<\/p>\n<p>L\u2019important reste une fois de plus de ne pas confondre vitesse et pr\u00e9cipitation !<\/p>\n<p><strong>Je vous souhaite mes Meilleurs V\u0153ux pour cette Ann\u00e9e 2019 !<\/strong><br \/>\n<strong>Amicalement<\/strong><\/p>\n<p><strong>Thierry BARBOTTE<\/strong><br \/>\n<strong>Pr\u00e9sident D\u2019ODIAL SOLUTIONS<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La volont\u00e9 d\u2019am\u00e9liorer le service de l\u2019eau dans les petits villages d\u2019Afrique incite de plus en plus d\u2019acteurs \u00e0 vouloir se tourner davantage vers le&#8230;<\/p>\n","protected":false},"author":5,"featured_media":22853,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_vp_format_video_url":"","_vp_image_focal_point":[],"footnotes":""},"categories":[60,158,1,58,159,203],"tags":[],"class_list":["post-22850","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eau-potable","category-gestion","category-non-classe","category-reseaux-dadduction-deau-potable","category-service-de-leau","category-solaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Voeux du Pr\u00e9sident: Peut-on r\u00eaver du tout solaire? 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