One of Germany’s largest municipal housing companies (70,000+ units) manages apartments, parking, commercial spaces, cooperative shares and savings, internet packages, staff data, and more. The core platform was an AS/400 with many separate systems—migrated once after reunification and then maintained largely by hand.
A regulation-aware calculation and contracting engine that gets electricity pricing right—from energy price (Arbeitspreis) and demand charges (Leistungspreis) to grid fees, levies & taxes, advance payments, and regional add-ons. It...