Wien Energie is Austria's largest regional energy supplier and a wholly owned subsidiary of Wiener Stadtwerke, the City of Vienna's utility group, serving over two million customers in the Vienna metropolitan area. As a cornerstone of Vienna's smart city strategy, Wien Energie operates an extensive smart grid infrastructure that integrates renewable energy sources, advanced metering systems, and intelligent load management across the city.
The company is a major investor in solar, wind, and district heating, operating one of Europe's largest urban solar programmes and managing Vienna's extensive district heating network, which serves over 440,000 households. Wien Energie is at the forefront of digital energy innovation, deploying smart meters citywide, piloting peer-to-peer energy trading on blockchain platforms, and developing energy communities that empower citizens to produce and share renewable electricity.
The company's innovation lab tests new business models including electric vehicle charging networks, energy storage solutions, and demand-response programmes that help balance grid load during peak periods. Wien Energie participates in several EU-funded smart city research projects, contributing Vienna's experience as a testbed for urban energy transition.
Its collaboration with ASCR (Aspern Smart City Research) in Vienna's Seestadt development has produced valuable insights into how smart energy systems can be integrated into new urban districts from the ground up. The company's approach to combining large-scale infrastructure investment with citizen-facing digital services makes it a model for how traditional energy utilities can transform into smart city enablers.