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Press release · 16 June 2026

From nuclear power site to Germany’s digital infrastructure: engrida project presented publicly to the municipal council for the first time

Wirth Gruppe and the town of Philippsburg present plans for a hyperscale data centre campus with a direct 380 kV connection; urban land-use planning procedure for the special zone “DEC Daten.Energie.City” is initiated; waste heat is to supply Philippsburg households in future and, in the longer term, other municipalities on the Upper Rhine as well.

Press release

Philippsburg / Waghäusel, 16 June 2026. At today’s public meeting of the Philippsburg municipal council, the Wirth Gruppe, together with the town of Philippsburg, presented the plans for the engrida project publicly for the first time. A hyperscale-class data centre campus is to be built on the Campus Nord and Campus Süd sites in the Philippsburg-Huttenheim industrial park (the grounds of the former Goodyear plant). The grid connection at the existing 380 kV extra-high-voltage level at the former site of the Philippsburg nuclear power plant is secured by a contract concluded with TransnetBW. To make the connection, engrida is building its own substation close to the switchgear as well as underground cable routes to the industrial park.

The project is being developed as a development plan for the special zone “DEC Daten.Energie.City” within a joint planning area. The town and the project developer have agreed to conduct the procedure in close and transparent coordination with the Karlsruhe District Office and the specialist authorities.

Mayor Stefan Martus

Something stood here before, and something is coming here again. For decades, Philippsburg has been an energy location for the whole of Baden-Württemberg: nuclear power, now the ULTRANET converter, soon one of the largest battery storage systems in Germany, in the longer term green hydrogen, and now, with engrida, digital infrastructure on a scale of national importance as well. In Philippsburg we are used to big things, but this tops everything. We are shaping our structural change ourselves instead of waiting for others to shape it for us. With engrida, we are getting back some of the jobs and added value we lost when Goodyear closed: skilled, future-proof, with sustainable trade tax revenue. We are using industrial land that we already have instead of sealing new green spaces. And one thing is particularly close to my heart: in Germany, the heating transition has not really even started yet. Here we can make it tangible. In future, the waste heat from this campus is to arrive in Philippsburg living rooms, and we would like to explore carefully in what form our neighbouring municipalities on the northern Upper Rhine can benefit from it too. Dear citizens, dear colleagues in the neighbouring municipalities, dear region: let’s get going. We are doing this together: as equals, at pace and, above all, on our own terms.

Markus Wirth · Wirth Gruppe

The Wirth Gruppe is a family business with deep regional roots, based in Waghäusel, a few kilometres from Philippsburg. We are not investing here from outside, but in our own home region, and with a horizon spanning generations. engrida is more than a data centre project: we are combining energy, grid and data into an integrated platform, making use of one of the most valuable infrastructures Germany has: the existing 380 kV connection at the former KKP site. From an economic point of view, it would hardly be justifiable not to make this extra-high-voltage infrastructure usable for our country’s digital sovereignty. We are doing this on a brownfield site, with waste heat use for the region and in genuine partnership with the town of Philippsburg and its citizens. We have owned the site for more than seven years, and it has always been clear to us: there is no better one. In Mayor Stefan Martus and the Philippsburg municipal council, we have partners at our side of the kind one can only wish for in Germany for a project of this scale. We expressly thank them for this.

Dr. Oliver Strangfeld · Member of the Management Board of TransnetBW

By connecting this first data centre to TransnetBW’s extra-high-voltage grid, we are reaching an important milestone: we are bringing new digital infrastructure onto the grid and thereby creating a key prerequisite for value creation and future viability in the Philippsburg region. At the same time, we see that the number of grid connection requests is currently rising sharply, especially for battery storage systems and data centres. This shows how great the demand is, but it also makes clear: for available grid capacity to be allocated fairly, transparently and in a way that serves the system, clear rules are needed. The new maturity-level procedure of the four transmission system operators in Germany is an important step towards exactly that. It assesses applications not on a first-come, first-served basis, but according to comprehensible criteria and their actual readiness for implementation.

Heat for the region

An essential part of the project is the extraction of the low-temperature waste heat produced by cooling the data centre. The concept is designed to comply with the German Energy Efficiency Act (EnEfG); the spatial anchor point is the town of Philippsburg. Beyond the municipal level, Wirth Gruppe and the town are exploring, as a first step, in what form neighbouring municipalities on the northern Upper Rhine could also be involved in the longer term. Concrete talks with potentially interested neighbouring municipalities and public utilities will follow in the further procedure.

What this means for Philippsburg

A familiar address, a new task. Where electricity for half of Baden-Württemberg was generated for decades, a place of digital value creation is now emerging, on the same extra-high-voltage grid to which the nuclear power plant was already connected. The reservation of the grid connection is contractually secured with TransnetBW.

Brownfields become land for the future. The former Goodyear site has been revitalised by the Wirth Gruppe in recent years; hundreds of jobs have already been created there. With engrida, the full potential of this site is now being realised. Campus Nord and Campus Süd are being built step by step, on land that was already industrial. No greenfield site is lost in the process.

Philippsburg moves closer to the world. No fewer than five major data highways lead directly to the site. This makes Philippsburg as well connected digitally as only a few places in Germany: from an industrial location on the Upper Rhine to a digital hub of the country.

About the Wirth Gruppe

The Wirth Gruppe, based in Waghäusel (Baden-Württemberg), was founded in 1997 and is now managed in the second generation by Markus and Andreas Wirth. The group is active nationally and internationally in the business areas of real estate, renewable energy and strategic investments. In the energy sector, it is one of the established medium-sized platforms in Germany.

About engrida

engrida is the project name for the integrated energy, grid and data platform at the Philippsburg site. The name combines the three pillars Energy · Grid · Data.

About TransnetBW

As a transmission system operator, TransnetBW GmbH secures the electricity supply for around eleven million people in Baden-Württemberg and creates the infrastructure for the energy transition by maintaining, optimising and expanding the power grid as needed. The TransnetBW grid covers an area of 34,600 square kilometres. All players on the electricity market can use this grid on a non-discriminatory basis and on market-based terms.

Press contacts

Wirth Gruppe
Markus Wirth
engrida@wirthgruppe.com
Town of Philippsburg
Mayor Stefan Martus

Phone: +49 7256 87100

stefan.martus@philippsburg.de
TransnetBW
Clemens von Walzel
c.vonwalzel@transnetbw.de
Press release · 16 June 2026 · engrida To the press overview