Forum Virium Helsinki provides open data from Finland

Tool for looking up environment related statistics, in English:
Excel on energy and water use in 2013, has also English field descriptions:
Overview excel on:
1. sheet provides general info on Helsinki: population, energy use and energy production
2. sheet shows current carbon foot-print
3. sheet shows Helsinki CO2-emission basic scenario where likely mitigation activities have taken place
4. sheet shows more means for mitigation of CO2-emissions

Energy statistics for Finland and Nordic

Nordpool — Price information  for Electricity Market

General energy consumption-production and price data

Fingrid — data for energy consumption and production

Renewable energy data

Espoo City solar energy map

CO2 data

Helsinki CO2 emissions in 2030

Green house gas emission in Finland statistics