ADLER Solar GmbH
ADLER Solar GmbH has been using BCS since 2015 as a central platform for order processing, quotation design, documentation, and invoicing. From the first customer contact and project creation through to later billing, sales-related and operational processes are structured in BCS. Quotation creation with BIRT is particularly important: customer data, technical information, item data, profitability calculations, and additional project data are transferred directly from BCS into individually designed quotation documents.
BCS in use
ADLER Solar GmbH uses BCS for the following tasks:
- Offer preparation
- Customer relationship management (CRM)
- Personnel management
- Project controlling
- Project planning
- Invoicing
- Resource management
- Expense management
- Customer support system
- Holiday management
- Time recording
- Reporting
- Document management
Profile
ADLER Solar is a specialist provider of sustainable energy solutions based in Bremen, Germany. Founded in 2008, the company has around 65 employees at its Bremen location and is one of the leading specialist providers of sustainable energy solutions in northwestern Germany. ADLER Solar plans and installs photovoltaic systems, battery storage systems, charging infrastructure, and heat pumps, offering integrated energy solutions for residential and commercial customers from a single source. BCS supports end-to-end processing from sales, quotation, and order management through to project execution, documentation, service, and invoicing.
Products and services: photovoltaic systems / PV systems / solar systems, battery storage / energy storage, charging infrastructure / wallboxes / e-mobility, heat pumps, energy management, service, and documentation.

Johannes Korte
Head of Central Services and Authorized Signatory
BCS provides long-term relief through clear processes and structures, maximizes the benefits of data maintenance across all process steps, and enables the simultaneous management of multiple clients without switching systems. The integration of external project stakeholders and flexible interfaces—such as those with in-house systems and DATEV—further enhance efficiency and adaptability.