This document discusses the development of a new e-commerce system for IBC SOLAR built on TYPO3. It describes some of the challenges in previous systems and decisions made in developing the new system. Key points include using the BMEcat standard for the domain model, leveraging Extbase and the kickstarter to generate model objects, and using Apache Solr for faceted search of product data. Data integration was handled with Pentaho ETL and initial Extbase performance issues were addressed.