{"id":46488,"date":"2024-09-20T21:58:35","date_gmt":"2024-09-20T19:58:35","guid":{"rendered":"https:\/\/o7wkziwp0p-staging.wpdns.site\/?page_id=46488"},"modified":"2026-10-23T09:05:03","modified_gmt":"2026-10-23T07:05:03","slug":"management-board","status":"publish","type":"page","link":"https:\/\/greentech.energy\/en\/management-board\/","title":{"rendered":"Management Board \u2013 Leadership Team | greentech"},"content":{"rendered":"<div class=\"et_pb_section_0 et_pb_section et_pb_fullwidth_section et_section_regular et_block_section et_pb_section_parallax\"><span class=\"et-pb-parallax-wrapper\"><span class=\"et-pb-parallax-background et-pb-parallax-background-module--divi-section-0\" style=\"background-image:url(https:\/\/greentech.energy\/wp-content\/uploads\/greentech-team-fieldplanning-scaled.jpg)\"><\/span><\/span>\n<section class=\"et_pb_fullwidth_header_0 et_pb_fullwidth_header et_pb_bg_layout_dark et_pb_text_align_left et_pb_section_parallax et_pb_module et_flex_module hero-module remove_br1 mob_img preset--module--divi-fullwidth-header--default\"><span class=\"et-pb-parallax-wrapper\"><span class=\"et-pb-parallax-background et-pb-parallax-background-module--divi-fullwidth-header-0 et_parallax_bg_phone_exist\" style=\"background-image:url(https:\/\/greentech.energy\/wp-content\/uploads\/greentech-gruppenbild-2026-1.jpg)\"><\/span><\/span><span class=\"et-pb-parallax-wrapper\"><span class=\"et-pb-parallax-background et-pb-parallax-background_phone et-pb-parallax-background_phone-module--divi-fullwidth-header-0\" style=\"background-image:url(https:\/\/greentech.energy\/wp-content\/uploads\/greentech-Management-Board.jpg)\"><\/span><\/span><div class=\"et_pb_fullwidth_header_container left\"><div class=\"header-content-container center\"><div class=\"header-content et_flex_module\"><h1 class=\"et_pb_module_header\">The greentech Management Board.<\/h1><div class=\"et_pb_header_content_wrapper\"><p>As a group of companies we work together collaboratively, successfully and in a value adding manner. We are led by a strong management team.<\/p>\n<\/div><div class=\"et_pb_header_button_wrapper\"><a class=\"et_pb_button et_pb_more_button et_pb_button_two\" href=\"#introduction\">Mehr erfahren<\/a><\/div><\/div><\/div><\/div><div class=\"et_pb_fullwidth_header_overlay\"><\/div><div class=\"et_pb_fullwidth_header_scroll\"><\/div><\/section>\n<\/div>\n\n<div class=\"et_pb_section_1 et_pb_section et_section_regular et_block_section\" id=\"introduction\">\n<div class=\"et_pb_row_0 et_pb_row et_pb_gutters2 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_0 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_text_0 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h2>Act with foresight, manage successfully, grow together<\/h2>\n<\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_1 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_text_1 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><p>The greentech Group is led by an experienced management board. It is formed by five managing partners.<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_1 et_pb_row et_pb_gutters2 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_2 et_pb_column et_pb_column_4_4 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_image_0 et_pb_image et_animated et_pb_module et_block_module object-fit-cover preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/Anlage_Beachflag.jpg\" width=\"1512\" height=\"756\" class=\"wp-image-45678\" alt=\"greentech-Flagge vor moderner Photovoltaikanlage bei sonnigem Wetter \u2013 Symbolbild f\u00fcr F\u00fchrung und nachhaltige Unternehmenswerte.\" title=\"greentech \u2013 Verantwortung und Vision im Bereich Solarenergie\" \/><\/span><\/div>\n\n<div class=\"et_pb_image_1 et_pb_image et_animated et_pb_module et_block_module object-fit-cover preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/greentech-gruppenbild-2026-1.jpg\" width=\"2560\" height=\"1706\" class=\"wp-image-67375\" alt=\"Teambilder - Board\" title=\"Teambilder - Board\" \/><\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_section_2 et_pb_section et_section_regular et_block_section inner-section\" id=\"team\">\n<div class=\"et_pb_row_2 et_pb_row et_pb_gutters2 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_3 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_text_2 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h2 class=\"vc_custom_heading projektentwicklung_section_title vc_custom_1649939033963 fusion-responsive-typography-calculated\" data-fontsize=\"40\" data-lineheight=\"47px\">The Management Board<\/h2>\n<\/div><\/div>\n<\/div>\n\n<div class=\"et_pb_column_4 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_text_3 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h6><\/h6>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_3 et_pb_row et_pb_equal_columns et_pb_gutters1 et_block_row et_animated team-member-row preset--module--divi-row--default\">\n<div class=\"et_pb_column_5 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_image_2 et_pb_image et_animated et_pb_module et_block_module team-image preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/Ingo-Rehmann.jpg\" width=\"2880\" height=\"1920\" class=\"wp-image-47628\" alt=\"Ingo Rehmann leitet das Management Boards der greentech Gruppe und treibt federf\u00fchrend die Unternehmens- und Strategieentwicklung voran\" title=\"Ingo Rehmann, Chief Executive Officer (CEO) der greentech Gruppe\" \/><\/span><\/div>\n<\/div>\n\n<div class=\"et_pb_column_6 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_team_member_0 et_pb_team_member et_pb_team_member_no_image et_pb_bg_layout_light et_pb_module et_flex_module team-member-content\"><div class=\"et_pb_team_member_description\"><h5 class=\"et_pb_module_header\">Ingo Rehmann<\/h5><p class=\"et_pb_member_position\">Chief Executive Officer (CEO)<\/p><div class=\"et_pb_team_member_description_content\"><p>Ingo Rehmann hat die Leitung des Management Boards der greentech Gruppe inne und treibt in seiner Funktion federf\u00fchrend die Unternehmens- und Strategieentwicklung voran. In seiner Funktion als CEO spricht Rehmann f\u00fcr die Unternehmensgruppe und repr\u00e4sentiert greentech nach au\u00dfen. Gemeinsam mit dem CFO verantwortet er auch die Berichterstattung an die Share- und Stakeholder.<\/p>\n<p>Dar\u00fcber hinaus steht Ingo Rehmann dem Bereich Projektentwicklung vor und verantwortet die gruppenweite Projektentwicklung von Photovoltaik- und Batteriespeicherl\u00f6sungen bis zur Baureife in den greentech Kernm\u00e4rkten Deutschland, Gro\u00dfbritannien und Italien. Au\u00dferdem f\u00fchrt er den Bereich Central Services, der als interner Dienstleister gruppen\u00fcbergreifend zentrale Leistungen, wie Accounting, Human Resources, Corporate Development oder IT-Services b\u00fcndelt.<\/p>\n<p>Ingo Rehmann ist seit 2005 in der PV-Industrie aktiv. Bei der Conergy AG bekleidete er verschiedene Management-Positionen, unter anderem in den Bereichen M&A und als Head of Market Intelligence. Im Jahr 2008 gr\u00fcndete er greentech und entwickelte das Unternehmen zu einem der gro\u00dfen unabh\u00e4ngigen PV O&M und Engineering-Unternehmen in Europa. Er studierte Betriebswirtschaft in Deutschland, Australien und Spanien.<\/p>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_4 et_pb_row et_pb_equal_columns et_pb_gutters1 et_block_row et_animated team-member-row preset--module--divi-row--default\">\n<div class=\"et_pb_column_7 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_image_3 et_pb_image et_pb_module et_block_module team-image preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/aleksis-schaefer.jpg\" width=\"2648\" height=\"1765\" class=\"wp-image-13012\" alt=\"Aleksis Sch\u00e4fer, Chief Financial Officer (CFO) bei greentech\" title=\"aleksis-schaefer-greentech\" \/><\/span><\/div>\n<\/div>\n\n<div class=\"et_pb_column_8 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_team_member_1 et_pb_team_member et_pb_team_member_no_image et_pb_bg_layout_light et_pb_module et_flex_module team-member-content\"><div class=\"et_pb_team_member_description\"><h5 class=\"et_pb_module_header\">Aleksis Sch\u00e4fer<\/h5><p class=\"et_pb_member_position\">Chief Financial Officer (CFO)<\/p><div class=\"et_pb_team_member_description_content\"><p>Als CFO ist Aleksis Sch\u00e4fer verantwortlich f\u00fcr die Bereiche Corporate Finance & Corporate Controlling, Corporate Accounting sowie Data Science. Gemeinsam mit dem CEO verantwortet er auch die Berichterstattung an die Share- und Stakeholder.<\/p>\n<p>Aleksis Sch\u00e4fer kam 2010 zu greentech und verantwortete unter anderem den Aufbau des Asset Management Bereichs. Er ist seit 2005 in der PV-Industrie aktiv, wo er bei der Conergy AG zun\u00e4chst Erfahrungen im Bereich Post-Merger Integration sammelte. 2008 wechselte er als Unternehmensberater zur Boston Consulting Group. Aleksis Sch\u00e4fer hat Betriebswirtschaft an der RWTH Aachen studiert und h\u00e4lt einen Master in Engineering Physics an der Technischen Universit\u00e4t Helsinki.<\/p>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n\n\n<div class=\"et_pb_row_7 et_pb_row et_pb_equal_columns et_pb_gutters1 et_block_row et_animated team-member-row preset--module--divi-row--default\">\n<div class=\"et_pb_column_13 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_image_6 et_pb_image et_pb_module et_block_module team-image preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/joern-carstensen-chief-technical-officer-greentech.jpeg\" width=\"1920\" height=\"1536\" class=\"wp-image-47634\" alt=\"Joern Carstensen Chief Technical Officer (CTO)\" title=\"Jorn-Carstensen\" \/><\/span><\/div>\n<\/div>\n\n<div class=\"et_pb_column_14 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_team_member_4 et_pb_team_member et_pb_team_member_no_image et_pb_bg_layout_light et_pb_module et_flex_module team-member-content\"><div class=\"et_pb_team_member_description\"><h5 class=\"et_pb_module_header\">J\u00f6rn Carstensen<\/h5><p class=\"et_pb_member_position\">Chief Technical Officer (CTO)<\/p><div class=\"et_pb_team_member_description_content\"><div>\n<p id=\"message\">In seiner Rolle als CTO b\u00fcndelt J\u00f6rn Carstensen die Leitung aller technischen Bereiche der greentech Gruppe. Er ist verantwortlich f\u00fcr Anlagenbau, Engineering Services und Technisches Management. Ziel ist es, einheitliche Standards und Prozesse in allen technischen Bereichen bei greentech zu schaffen und so unternehmensweite Synergien, hohe Qualit\u00e4t und gr\u00f6\u00dftm\u00f6gliche Transparenz sicherzustellen.<\/p>\n<p>J\u00f6rn Carstensen kam 2014 als Business Development Manager zu greentech. Neben der Erschlie\u00dfung verschiedener europ\u00e4ischer M\u00e4rkte baute er den Bereich Engineering & Technical Advisory auf. Von 2006 bis 2014 war er f\u00fcr die Conergy Group in verschiedenen internationalen Funktionen im Corporate und Business Development t\u00e4tig. Zuvor arbeitete er f\u00fcr eine Beratungseinheit von Accenture und unterst\u00fctzte Versorgungsunternehmen bei strategischen und organisatorischen Fragestellungen. J\u00f6rn Carstensen hat Wirtschaftsingenieurwesen mit Schwerpunkt Energie- und Umweltmanagement an den Universit\u00e4ten Flensburg und Southampton studiert.<\/p>\n<\/div>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_8 et_pb_row et_pb_equal_columns et_pb_gutters1 et_block_row et_animated team-member-row preset--module--divi-row--default\">\n<div class=\"et_pb_column_15 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_image_7 et_pb_image et_animated et_pb_module et_block_module team-image preset--module--divi-image--default\"><span class=\"et_pb_image_wrap\"><img decoding=\"async\" src=\"https:\/\/greentech.energy\/wp-content\/uploads\/jacob-isenberg-greentech-mgt-1.jpg\" width=\"1920\" height=\"1280\" class=\"wp-image-67399\" alt=\"Jacob Isenberg\" title=\"Jacob Isenberg\" \/><\/span><\/div>\n<\/div>\n\n<div class=\"et_pb_column_16 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_team_member_5 et_pb_team_member et_pb_team_member_no_image et_pb_bg_layout_light et_pb_module et_flex_module team-member-content\"><div class=\"et_pb_team_member_description\"><h5 class=\"et_pb_module_header\">Jacob Isenberg<\/h5><p class=\"et_pb_member_position\">Chief Investment Officer (CIO)<\/p><div class=\"et_pb_team_member_description_content\"><p>Jacob Isenberg has been a member of greentech Group\u2019s Management Board as Chief Investment Officer (CIO) since 1 May 2026. In this role, he is responsible for investment and transaction activities for photovoltaic and battery energy storage projects, as well as for executing the Group\u2019s IPP strategy.<\/p>\n<p>Prior to joining greentech, Jacob Isenberg served as CFO of E.R. Capital Holding, of which greentech is a part. Through his time at E.R. Capital Holding, he is well acquainted with greentech and with the market and business environment of the renewable energy sector. Earlier in his career, he worked, among others, for Hapag-Lloyd, Accenture and a HealthTech start-up, bringing experience in corporate and asset finance as well as strategy across a range of corporate settings.<\/p>\n<p>Jacob Isenberg lives and works in Hamburg. He studied in Milan, Singapore and Hamburg, and holds an M.Sc. in Economics, Politics and Management from Universit\u00e0 Bocconi (Italy).<\/p>\n<\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_section_3 et_pb_section et_section_regular et_block_section\">\n<div class=\"et_pb_row_9 et_pb_row et_pb_gutters2 et_block_row preset--module--divi-row--default\">\n<div class=\"et_pb_column_17 et_pb_column et_pb_column_4_4 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough\">\n<div class=\"et_pb_text_4 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module et_pb_text_align_center preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h2>You might also be interested in<\/h2>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n<div class=\"et_pb_row_10 et_pb_row et_pb_gutters2 et_block_row interested-row preset--module--divi-row--default\">\n<div class=\"et_pb_column_18 et_pb_column et_pb_column_1_2 et_block_column et_pb_css_mix_blend_mode_passthrough et_animated interested-col\">\n<div class=\"et_pb_text_5 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module services-cta-title preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h3>Our sustainable<br \/>Engagement &amp; ESG Activities.<\/h3>\n<\/div><\/div>\n\n<div class=\"et_pb_module et_pb_button_module_wrapper et_pb_button_0_wrapper preset--module--divi-button--default_wrapper\"><a class=\"et_pb_button_0 et_pb_button et_pb_bg_layout_light et_animated et_pb_module et_block_module global-btn preset--module--divi-button--default\" href=\"https:\/\/greentech.energy\/esg-nachhaltigkeit\/\">Learn more<\/a><\/div>\n<\/div>\n\n<div class=\"et_pb_column_19 et_pb_column et_pb_column_1_2 et-last-child et_block_column et_pb_css_mix_blend_mode_passthrough et_animated interested-col\">\n<div class=\"et_pb_text_6 et_pb_text et_pb_bg_layout_light et_animated et_pb_module et_block_module services-cta-title preset--module--divi-text--default\"><div class=\"et_pb_text_inner\"><h3>About greentech<\/h3>\n<\/div><\/div>\n\n<div class=\"et_pb_module et_pb_button_module_wrapper et_pb_button_1_wrapper preset--module--divi-button--default_wrapper\"><a class=\"et_pb_button_1 et_pb_button et_pb_bg_layout_light et_animated et_pb_module et_block_module global-btn preset--module--divi-button--default\" href=\"https:\/\/greentech.energy\/ueber-greentech\/\" target=\"_blank\">Learn more<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":11,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-46488","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/pages\/46488","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/comments?post=46488"}],"version-history":[{"count":15,"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/pages\/46488\/revisions"}],"predecessor-version":[{"id":72058,"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/pages\/46488\/revisions\/72058"}],"wp:attachment":[{"href":"https:\/\/greentech.energy\/en\/wp-json\/wp\/v2\/media?parent=46488"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}