1.0Optimus Energyhttps://optimusenergy.gr/en/ekalogeropoulou@optimusenergy.grhttps://optimusenergy.gr/en/author/ekalogeropoulou-optimusenergy-gr/rich600338<blockquote class="wp-embedded-content" data-secret="oVthMep0Wx"><a href="https://optimusenergy.gr/en/2026/05/21/balkan-battery-day-2026/">Balkan Battery Day 2026</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://optimusenergy.gr/en/2026/05/21/balkan-battery-day-2026/embed/#?secret=oVthMep0Wx" width="600" height="338" title="“Balkan Battery Day 2026” — Optimus Energy" data-secret="oVthMep0Wx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://optimusenergy.gr/wp-includes/js/wp-embed.min.js </script> https://optimusenergy.gr/wp-content/uploads/2026/08/0521-Balkan-Battery-Day-scaled.jpg25601707Elena Kalogeropoulou, Head of Flexibility at Optimus Energy, participated in Balkan Battery Day 2026, contributing to the discussion on how the rapidly evolving European electricity markets are reshaping the financing, operation and long-term bankability of Battery Energy Storage Systems (BESS). Elena joined the panel “Financing and Bankability of BESS Projects”, moderated by Iulian Harpa, Managing […]