Sonnedix closes €730m loan from nine banks for solar and storage

Sonnedix has closed a €730m syndicated loan from nine banks. The money will refinance existing plants, pay for operational upgrades, and fund new solar and battery capacity in Italy, Spain, Portugal, and France. Net Zero Investor reported the deal on August 3.

The lenders are AIB, Crédit Agricole CIB, CIBC, ING, Intesa Sanpaolo, Sabadell, Santander CIB, Société Générale, and UniCredit. The proceeds will back photovoltaic projects with about 540MW of combined capacity and two battery energy storage systems. Italy accounts for more than 350MW of the solar total; Spain, Portugal, and France split the rest.

Crédit Agricole CIB and Santander CIB served as co-financial advisors. ING took the ESG coordinator role, which usually means the loan's terms include sustainability performance conditions. The report does not specify those conditions, but the coordinator's presence suggests the green credentials are part of the loan's binding terms.

Axel Thiemann, Sonnedix's chief executive, tied the financing to the company's storage push: "This financing reflects Sonnedix's commitment to developing high quality renewable projects in our strategic markets," he said, according to Net Zero Investor. "It follows our recent BESS portfolio acquisition in Italy and underscores the pace at which we are scaling our storage capabilities across Europe."

Sonnedix is unlisted and based in the UK. Institutional investors advised by J.P. Morgan Asset Management have held a majority stake since 2014. With no public equity market to tap, syndicated bank debt is the company's main route to large-scale capital. That nine banks committed €730m points to the strength of project finance in the region's solar sector.

The loan does three jobs. It refinances existing debt, pays for optimization work, and funds new construction. Putting all three in one syndicated facility lets Sonnedix reprice older borrowings at current market rates while the two battery systems and the new solar capacity move toward operation. Net Zero Investor presents the transaction as a way to strengthen the company's ability to attach storage to its solar portfolio and make the grid more flexible and resilient.

Solar-plus-storage is what separates this loan from a plain construction loan. Two batteries look small next to a solar fleet of roughly 540MW, but they give Sonnedix a stake in power markets where storage revenues are still being defined. The batteries act as a hedge: capture midday solar output, sell it when prices climb, and collect the spread. The chief executive's reference to a recent BESS acquisition in Italy suggests this is a strategy being built, not a one-off.

The lenders span Ireland, France, Italy, Spain, the Netherlands, and Canada. Net Zero Investor frames that spread as evidence of growing demand for large-scale solar and storage projects.

The report leaves out the loan's pricing, maturity, and the location and capacity of the two battery systems. Those details would say how expensive this capital is and where the storage build-out will happen. Without them, the deal's economics are only partly visible, which is common in syndicated loan coverage. The next disclosures, from Sonnedix or the banks, will show how much of the storage promise is real.