{"id":60268,"date":"2025-09-17T10:47:21","date_gmt":"2025-09-17T10:47:21","guid":{"rendered":"https:\/\/www.forbesmiddleeast.com\/lists\/?page_id=60268"},"modified":"2025-09-17T10:47:21","modified_gmt":"2025-09-17T10:47:21","slug":"dietmar-siersdorfer","status":"publish","type":"page","link":"https:\/\/www.forbesmiddleeast.com\/lists\/the-middle-easts-sustainability-leaders-2025\/dietmar-siersdorfer\/","title":{"rendered":"Dietmar Siersdorfer"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container white-container max-width-1100 hundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-center\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1 list-year\" style=\"text-align:center;\"><p>The Middle East\u2019s<\/p>\n<\/div><div class=\"fusion-text fusion-text-2 main-list-name\"><p><a href=\"https:\/\/www.forbesmiddleeast.com\/lists\/the-middle-easts-sustainability-leaders-2025\/\"> Sustainability Leaders 2025<\/a><\/p>\n<\/div><style>\n.custom_ads{\n   display:none !important;\n}\n.sector_size p {\n    font-size: 70px !important;\n    line-height: 50px !important;\n    font-family: Graphik-Semibold !important;\n    color: black 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!important;\n}\n\n\n<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:100% !important;margin-top : 0px;margin-bottom : 0px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 1.92%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 1.92%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;order : 0;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 50px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}@media only screen and (max-width:640px) {.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 20px;padding-right : 10px;padding-left : 10px;}}<\/style><\/div>\n<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container max-width-1140 list_container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: #132030;background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1185.6px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_3 1_3 fusion-flex-column list_image\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 20px 20px 20px 20px;\"><div class=\"fusion-text fusion-text-3 list_image\">    <img decoding=\"async\" width=\"1200\" height=\"1200\" src=\"https:\/\/forbesme-prestaging-media.s3.us-east-2.amazonaws.com\/lists\/uploads\/2025\/09\/15083029\/9.-Dietmar-Siersdorfer.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"\" srcset=\"https:\/\/forbesme-prestaging-media.s3.us-east-2.amazonaws.com\/lists\/uploads\/2025\/09\/15083029\/9.-Dietmar-Siersdorfer-66x66.jpg 66w, https:\/\/forbesme-prestaging-media.s3.us-east-2.amazonaws.com\/lists\/uploads\/2025\/09\/15083029\/9.-Dietmar-Siersdorfer-150x150.jpg 150w, https:\/\/forbesme-prestaging-media.s3.us-east-2.amazonaws.com\/lists\/uploads\/2025\/09\/15083029\/9.-Dietmar-Siersdorfer-200x200.jpg 200w, 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sizes=\"(max-width: 1200px) 100vw, 1200px\" \/>    \n  \n<\/div><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-1{width:33.333333333333% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-1 > .fusion-column-wrapper {padding-top : 20px !important;padding-right : 20px !important;margin-right : 0%;padding-bottom : 20px !important;padding-left : 20px !important;margin-left : 0%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-1{width:100% !important;order : 0;}.fusion-builder-column-1 > .fusion-column-wrapper {margin-right : 0%;margin-left : 0%;}}<\/style><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_2_3 2_3 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 20px 20px 20px 20px;\"><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-1{margin-top:0px!important;margin-bottom:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-one list_title\" style=\"margin-top:0px;margin-bottom:0px;\"><h1 class=\"title-heading-left\" style=\"margin:0;color:#d00436;\">\n<style type=\"text\/css\">\n  @media only screen and (max-width: 600px) {\n    .custom_line_height{\n      line-height: 40px !important;\n    }\n  }\n\n<\/style>\n<h1 class=\"title-heading-left custom_line_height\" style=\"margin:0;color:#d00436;\"><span class=\"custom_rank\">9. <\/span><span class=\"list_entry_title\">Dietmar Siersdorfer<\/span><\/h1>\n\n\n<\/h1><\/div><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-2{margin-top:0px!important;margin-bottom:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-2 fusion-sep-none fusion-title-text fusion-title-size-two list_category4\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\">\n<style type=\"text\/css\">\n  .properties_title {\n    color: black;\n    font-weight: 600;\n    font-size: 20px;\n    font-family: 'Euclid';\n}\n\n.custom-spk-value-new {\n    font-family: \"Euclid\" !important;\n    font-size: 17px !important;\n    color: black;\n}\n<\/style>\n\n<div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\"><span class=\"properties_title\">Company: <\/span><span class=\"custom-spk-value-new\">Siemens Energy<\/span><\/div>\n\n\n<\/div><\/div><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-3{margin-top:0px!important;margin-bottom:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-3 fusion-sep-none fusion-title-text fusion-title-size-two list_category4\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\">\n<style type=\"text\/css\">\n  .properties_title {\n    color: black;\n    font-weight: 600;\n    font-size: 20px;\n    font-family: 'Euclid';\n}\n\n.custom-spk-value-new {\n    font-family: \"Euclid\" !important;\n    font-size: 17px !important;\n    color: black;\n}\n<\/style>\n\n<div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\"><span class=\"properties_title\">Designation: <\/span><span class=\"custom-spk-value-new\"> Managing Director, Middle East and Africa <\/span><\/div>\n\n\n<\/div><\/div><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-4{margin-top:0px!important;margin-bottom:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-4 fusion-sep-none fusion-title-text fusion-title-size-two list_category4\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\">\n<style type=\"text\/css\">\n  .properties_title {\n    color: black;\n    font-weight: 600;\n    font-size: 20px;\n    font-family: 'Euclid';\n}\n\n.custom-spk-value-new {\n    font-family: \"Euclid\" !important;\n    font-size: 17px !important;\n    color: black;\n}\n<\/style>\n\n<div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\"><span class=\"properties_title\">Established: <\/span><span class=\"custom-spk-value-new\">2020<\/span><\/div>\n\n\n<\/div><\/div><style type=\"text\/css\">@media only screen and (max-width:1024px) {.fusion-title.fusion-title-5{margin-top:0px!important;margin-bottom:0px!important;}}<\/style><div class=\"fusion-title title fusion-title-5 fusion-sep-none fusion-title-text fusion-title-size-two list_category4\" style=\"margin-top:0px;margin-bottom:0px;\"><div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\">\n<style type=\"text\/css\">\n  .properties_title {\n    color: black;\n    font-weight: 600;\n    font-size: 20px;\n    font-family: 'Euclid';\n}\n\n.custom-spk-value-new {\n    font-family: \"Euclid\" !important;\n    font-size: 17px !important;\n    color: black;\n}\n<\/style>\n\n<div class=\"title-heading-left title-heading-tag\" style=\"margin:0;color:#ffffff;\"><span class=\"properties_title\">Headquarters: <\/span><span class=\"custom-spk-value-new\">Global: Germany; Regional: U.A.E.<\/span><\/div>\n\n\n<\/div><\/div><div class=\"fusion-text fusion-text-4\" style=\"font-size:17px;line-height:1.7;letter-spacing:0.01em !Important;color:#ffffff;\">\n<style type=\"text\/css\">\n  ._22Ymv{\n    font-family: \"Euclid\" !important;\n    color: black !important;\n    margin-top: 10px;\n  }\n  \n<\/style>\n<div class=\"_22Ymv\">\n<p>In 2025, Siemens Energy upgraded Morocco\u2019s Koudia Al Baida wind project by replacing 90 turbines with 20 modern Siemens Gamesa units, doubling capacity to 100 MW. It also launched Saudi Arabia\u2019s first sulfur hexafluoride-free GIS project with Elswedy Electric, cutting over 6,100 tons of CO\u2082 emissions annually. In January 2025, Siemens Energy began building a high-voltage substation in Nagaa Hammadi, Egypt, to transmit 1 GW of solar power\u2014enough for nearly a million homes. Siersdorfer has led the company since 2020 after first joining Siemens in Germany in 1987.<\/p>\n<p><\/p>\n<\/div>\n\n\n\n<\/div><div class=\"fusion-text fusion-text-5\">  <style type=\"text\/css\">\n    .nav_link, .nav_link:hover {\n      color: #D00436 !important;\n      font-size: 16px;\n      margin: 0 10px;\n    }\n    .nav_link i {\n        font-size: 13px;\n    }\n    .nav_link{\n      overflow: hidden;\n      white-space: nowrap;\n    }\n    @media only screen and (min-width: 768px) {\n      .Next{\n        text-align: right;\n      }\n      .previous{\n        text-align: left;\n      }\n    }\n  <\/style>\n  <div class=\"row\">\n    <div class=\"navigation\">\n      <div class=\"col-lg-6 col-md-6 col-sm-12\">\n                    <div class=\"previous\">\n            \n            <a class=\"nav_link\" href=\"https:\/\/www.forbesmiddleeast.com\/lists\/the-middle-easts-sustainability-leaders-2025\/walid-sheta\/\" title=\"Walid Sheta\">\n              <i class=\"fa fa-chevron-left\" aria-hidden=\"true\" node-item=\"165\"><\/i>\n              Walid Sheta<\/a>\n\n            <\/div>\n              <\/div>\n      <div class=\"col-lg-6 col-md-6 col-sm-12\">\n                  <div class=\"Next\">\n          <a class=\"nav_link\" href=\"https:\/\/www.forbesmiddleeast.com\/lists\/the-middle-easts-sustainability-leaders-2025\/daxita-rajcoomar\/\" title=\"Daxita Rajcoomar\">Daxita Rajcoomar          <i class=\"fa fa-chevron-right\" aria-hidden=\"true\" node-item=\"156\"><\/i>\n            \n          <\/a>\n          \n          <\/div>\n              <\/div>\n    <\/div>\n  <\/div>\n  \n<\/div><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-2{width:66.666666666667% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-2 > .fusion-column-wrapper {padding-top : 20px !important;padding-right : 20px !important;margin-right : 0%;padding-bottom : 20px !important;padding-left : 20px !important;margin-left : 0%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-2{width:100% !important;order : 0;}.fusion-builder-column-2 > .fusion-column-wrapper {margin-right : 0%;margin-left : 0%;}}<\/style><\/div><style type=\"text\/css\">.fusion-fullwidth.fusion-builder-row-2 a:not(.fusion-button):not(.fusion-builder-module-control):not(.fusion-social-network-icon):not(.fb-icon-element):not(.fusion-countdown-link):not(.fusion-rollover-link):not(.fusion-rollover-gallery):not(.fusion-button-bar):not(.add_to_cart_button):not(.show_details_button):not(.product_type_external):not(.fusion-view-cart):not(.fusion-quick-view):not(.fusion-rollover-title-link):not(.fusion-breadcrumb-link):hover, .fusion-fullwidth.fusion-builder-row-2 a:not(.fusion-button):not(.fusion-builder-module-control):not(.fusion-social-network-icon):not(.fb-icon-element):not(.fusion-countdown-link):not(.fusion-rollover-link):not(.fusion-rollover-gallery):not(.fusion-button-bar):not(.add_to_cart_button):not(.show_details_button):not(.product_type_external):not(.fusion-view-cart):not(.fusion-quick-view):not(.fusion-rollover-title-link):not(.fusion-breadcrumb-link):hover:before, .fusion-fullwidth.fusion-builder-row-2 a:not(.fusion-button):not(.fusion-builder-module-control):not(.fusion-social-network-icon):not(.fb-icon-element):not(.fusion-countdown-link):not(.fusion-rollover-link):not(.fusion-rollover-gallery):not(.fusion-button-bar):not(.add_to_cart_button):not(.show_details_button):not(.product_type_external):not(.fusion-view-cart):not(.fusion-quick-view):not(.fusion-rollover-title-link):not(.fusion-breadcrumb-link):hover:after {color: #000000;}.fusion-fullwidth.fusion-builder-row-2 .pagination a.inactive:hover, .fusion-fullwidth.fusion-builder-row-2 .fusion-filters .fusion-filter.fusion-active a {border-color: #000000;}.fusion-fullwidth.fusion-builder-row-2 .pagination .current {border-color: #000000; 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It also launched Saudi Arabia\u2019s first sulfur hexafluoride-free GIS project with Elswedy Electric, cutting over 6,100 tons of CO\u2082 emissions annually. In January 2025, Siemens Energy began building a high-voltage substation in Nagaa Hammadi, Egypt, to transmit 1 GW of solar power\u2014enough for nearly a million homes. Siersdorfer has led the company since 2020 after first joining Siemens in Germany in 1987.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.forbesmiddleeast.com\/lists\/the-middle-easts-sustainability-leaders-2025\/dietmar-siersdorfer\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dietmar Siersdorfer\" \/>\n<meta property=\"og:description\" content=\"In 2025, Siemens Energy upgraded Morocco\u2019s Koudia Al Baida wind project by replacing 90 turbines with 20 modern Siemens Gamesa units, doubling capacity to 100 MW. It also launched Saudi Arabia\u2019s first sulfur hexafluoride-free GIS project with Elswedy Electric, cutting over 6,100 tons of CO\u2082 emissions annually. In January 2025, Siemens Energy began building a high-voltage substation in Nagaa Hammadi, Egypt, to transmit 1 GW of solar power\u2014enough for nearly a million homes. 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