Fingrid endeavours to minimise the environmental impact of new substations by selecting a location that causes minimal harm to the environment and people. In addition, the environmental impact is taken into consideration in the technical design of each substation.


  • We aim to avoid placing new transformer stations in groundwater areas.
  • We evaluate the environmental risks of our operations and minimise them by means such as using alternative chemicals, shielding pools, oil deflectors and leak monitoring equipment.
  • If necessary, we mitigate the impact of new substations on the landscape.
  • We set limits for noise emissions.
Construction and refurbishment

Fingrid endeavours to minimise the environmental impacts and risks of substation construction. We also improve the environmental safety of substations when we carry out refurbishment projects.


  • We sort and recycle waste effectively.
  • We use working methods that prevent chemical accidents, noise, vibrations and dust formation.
  • We train and audit our contractors.
  • If blasting work is required on a worksite, we check the buildings first.
  • The neighbourhood is notified of construction work in advance.


Operation and maintenance

The careful maintenance of substations extends their service lives and also prevents environmental risks. Fingrid endeavours to minimise the environmental impacts and risks of substations throughout their life cycles.


  • We only handle and store the essential chemicals at the substation.
  • Environmental risks are managed by means such as shielding pools, oil deflectors, leak alarms and fire extinguishing equipment.
  • We train and audit our service providers.
  • We prepare ourselves in case of accidents by issuing operating instructions and supplying oil spill response equipment.
  • At the end of a substation’s life cycle, we reuse or recycle all of the structures and equipment.