Author
Michael Fuhs
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Articles written by Michael Fuhs
Three emerging structures for solar-plus-storage PPAs
The PPA price for pure photovoltaic projects has fallen by 20% over the past year, making such contracts less competitive. However, clear structures for bankable hybrid PPAs are now beginning to take shape, says Pieter van der Mullen, Senior Account Manager at LevelTen Energy, in an interview with pv magazine.
Nov 11, 2025
Volytica on maximizing battery value with advanced diagnostics
Using cloud-based software, the young company analyzes batteries during operation in large-scale stationary storage systems and electric vehicles. The platform diagnoses battery aging, whether cells are performing unevenly, and whether there are risks of failure or even fire.
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How Germany’s DAL finances large-scale batteries
Peer Güntzel, deputy managing director of the asset financing business, explains how he assesses battery revenue potential and risk. While hybrid power purchase agreements (PPAs), for solar-plus-storage sites show promise, generating "merchant" revenue from pure, unsubsidized energy trading could become more difficult.
How Germany’s Green Flexibility will spend its $455m battery fund
Christoph Ostermann, founder and CEO of Bavarian business Green Flexibility, tells pv magazine how the young company will spend the €400 million ($455 million) raised by selling shares to Swiss investor Partners Group. With the cash to be invested into battery energy storage systems (BESS), former Sonnen co-founder Ostermann explains acquisitions will be made alongside in-house development but insists any acquired BESS must have a grid connection commitment.
Large-scale storage financing: “There must be no uncovered risks”
The pipeline for battery storage projects is expanding, but many still lack financing. Florian Hock and Marcus Starke from the Structured Finance Energy Origination division at Nord/LB discuss what truly matters, from coherent overall concepts and reliable contractual partners to the role of municipalities and securing revenues through tolling agreements.
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Vattenfall plans 3 GW of batteries, offers tolling contracts
Vattenfall representatives Nicola Kleihues and Daniel Schwarz tell pv magazine about the power company's strategy in Germany and what it considers when buying project rights there. They also explain how to evaluate tolling offers to secure energy-storage-based electricity flexibility for a fixed fee.
German battery investment dynamics ‘extremely good’
The potentially faster return on investment at solar sites which have batteries added are attracting German developers and site owners. Janis Schäfer, partner at finance company Pine Valley Capital, shares his perspective on battery bankability and a trend towards "merchant" facilities.
Germany’s Solarwatt launches new inverters, batteries
The manufacturer has launched six inverters and batteries as part of its Solarwatt Home line and outlined its future strategy. The German company, currently in transition, recently closed its solar module plant in Germany and announced staff reductions.
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