Siemens modeled what kind of technologies Helsinki can use to meet its ambitious climate targets in a cost-efficient way. The City Performance Tool (CyPT) has been used in other cities such as Vienna, Copenhagen and London already. Helsinki aims to be carbon neutral by 2050. The ten chosen technologies can bring up to 50 per cent of emissions savings until 2030 compared to the emissions in 1990. Without investments in the technologies the emissions in 2030 would be only 34 per cent lower than in 1990. The City of Helsinki Environment Centre has been collaborating with Siemens by providing information for the modeling. Also other departments of the City of Helsinki were involved in choosing the technologies.