Paper: <a href="https://www.researchgate.net/profile/Jan-Figgener/publication/369479477_The_development_of_battery_storage_systems_in_Germany_A_market_review_status_2023/links/641d47ec66f8522c38ccfd6d/The-development-of-battery-storage-systems-in-Germany-A-market-review-status-2023.pdf" rel="nofollow">https://www.researchgate.net/profile/Jan-Figgener/publicatio...</a>