(function() { function getParam(param) { let params = new URLSearchParams(window.location.search); return params.get(param); } function storeClickId(param, storageKey) { let value = getParam(param); if (value) { let record = { value: value, expiry: new Date().getTime() + 90 * 24 * 60 * 60 * 1000 }; localStorage.setItem(storageKey, JSON.stringify(record)); console.log(`✅ Stored ${param}:`, record); } else { console.log(`⚠ No ${param} found in URL`); } } function updateHubSpotIframe(attempt = 0) { let iframe = document.querySelector('iframe[src*="hsforms.com"]'); if (!iframe) { console.warn(`⚠ Attempt ${attempt}: HubSpot iFrame not found.`); if (attempt < 20) setTimeout(() => updateHubSpotIframe(attempt + 1), 500); return; } let gclid = JSON.parse(localStorage.getItem("gclid"))?.value || ""; let fbclid = JSON.parse(localStorage.getItem("fbclid"))?.value || ""; let li_fat_id = JSON.parse(localStorage.getItem("li_fat_id"))?.value || ""; let newSrc = iframe.src.split("?")[0] + `?google_clickid=${encodeURIComponent(gclid)}` + `&meta_clickid=${encodeURIComponent(fbclid)}` + `&linkedin_clickid=${encodeURIComponent(li_fat_id)}`; console.log("🔄 Updating HubSpot iFrame to:", newSrc); iframe.src = newSrc; } // Delay execution until page is fully loade
top of page

Construction commences in Ettringen: green flexibility to deliver a 25 MWh large-scale battery storage system with grid-neutral integration

  • 2 days ago
  • 2 min read

Updated: 2 days ago

green flexibility has commenced construction of a 25 MWh battery energy storage system (BESS) in Ettringen, representing an investment of approximately €10 million in regional energy infrastructure. In close coordination with the distribution system operator LEW Verteilnetz GmbH, a grid-neutral operating concept has been agreed upon, taking local network constraints into account and enabling stable and sustainable integration into the power grid.


Kempten/Ettringen, June 9, 2026


Energy storage systems are indispensable to the success of the energy transition, particularly when they are effectively integrated into regional energy structures. They provide the flexibility required to manage an increasingly volatile energy system and help balance electricity supply and demand. With projects such as the one in Ettringen, green flexibility is actively driving this transformation forward.

 

Construction has now begun on a large-scale battery storage with a power output of 10 MW and a storage capacity of 25 MWh near an existing substation in Ettringen. Commissioning is scheduled for the end of 2026. The site was deliberately selected to make efficient use of existing grid infrastructure.

 

At the same time, the grid connection concept developed in collaboration with the local network operator enables grid-neutral operation, ensuring that the facility does not place additional strain on the network during periods of regional congestion. This approach is based on green flexibility’s REGIOlink concept, which utilizes a Flexible Connection Agreement established jointly with LEW Verteilnetz GmbH. The arrangement allows the storage asset to operate flexibly and economically while maintaining full grid neutrality.

 

“REGIOlink has become a key component of many of our projects. We are deliberately implementing this concept in Ettringen as well, because the energy transition can only succeed through collaboration. By doing so, we create value for the region, relieve pressure on the electricity grid, and actively contribute to the transformation toward a more decentralized and resilient energy system,” said Christoph Lienert, Co-Founder and Managing Director of green flexibility.

 

Battery Storage Strengthens Security of Supply in Ettringen

Once operational, the battery storage facility in Ettringen will help stabilize the electricity grid, mitigate peak loads, and store surplus energy generated by wind and solar installations. Thanks to its ability to absorb and discharge electricity within seconds, the system will make an important contribution to regional security of supply and support the increasing flexibility requirements of a more decentralized energy system.

 

As with all of its projects, green flexibility places great emphasis on close cooperation with local stakeholders in Ettringen, underlining the company’s commitment to regional value creation and partnership-based project development.


Press photos

-        Photo of Christoph Lienert, COO & Co-Founder green flexibility

-        3D Visualization of the Ettringen project: Link

-        Photo of an existing facility in Immenstadt, scheduled to commence operations in June

Photo credits: green flexibility

 
 
bottom of page