TenneT worked with IBM and Sonnen E-services to deploy blockchain technology to manage grid congestion using household batteries. This project kicked off in 2017 and was considered a success. This pilot was kicked off at the same time at TenneT's prjoect with Vandebron.
1. [https://www.tennet.eu/fileadmin/user_upload/Company/News/German/Hoerche…](https://www.tennet.eu/fileadmin/user_upload/Company/News/German/Hoerche…)
2. [https://www.tennet.eu/news/detail/europes-first-blockchain-project-to-s…](https://www.tennet.eu/news/detail/europes-first-blockchain-project-to-s…)
3. [https://equigy.com/case/sonnen-pilot-how-home-storage-helps-to-balance-…](https://equigy.com/case/sonnen-pilot-how-home-storage-helps-to-balance-…)
4. [https://www.tennet.eu/news/detail/tennet-continuing-with-blockchain-aft…](https://www.tennet.eu/news/detail/tennet-continuing-with-blockchain-aft…)