Kellosaari Diesel Power Plant, Helsinki, Finland - 118 MW

Kellosaari is a diesel power plant located in Helsinki, Finland, with a capacity of 118 MW. Owned by Helsingin Energia, the facility is operational and plays a role in the region's power generation mix. As a diesel plant, it is typically used for peak load or backup power due to its ability to start quickly. The plant operates on oil as its primary fuel. In Finland, power generation is subject to EU regulations, including the Industrial Emissions Directive (2010/75/EU) and Best Available Techniques (BAT) conclusions for large combustion plants. These frameworks set emission limits for SOx, NOx, and particulates, and require monitoring and reporting. Diesel plants, while flexible, have higher CO2 emissions per MWh compared to natural gas or renewables. Its location in the capital region underscores its importance for local energy security. Its capacity places it in the medium-scale range for diesel plants in Finland.

Kellosaari's use of oil as fuel results in higher CO2, SOx, and NOx emissions compared to natural gas or renewable sources. The plant is located in Helsinki, a densely populated urban area, which may raise local air quality concerns. However, it operates under EU emissions standards and likely employs abatement technologies to meet regulatory limits. Its role as a peaking plant means it runs fewer hours annually, reducing overall environmental impact.