Photovoltaic systems

Photo voltaic system on the roof of building Magasin 6 in Frihamnen port

As part of the company's efforts to become a fossil fuel-free operation, Ports of Stockholm has chosen to commit to photovoltaic systems. There are currently four photovoltaic systems - at Frihamnen, Värtahamnen, Port of Nynäshamn and Port of Kapellskär.

Ports of Stockholm's photovoltaic systems can produce electricity at a cost that is comparable to the purchase price of the electricity market. The systems have a guaranteed lifespan of at least 25 years and experiences so far are positive.

The first photovoltaic system, on the roof of the Magasin 6 building at Frihamnen, was inaugurated in 2013 and is one of Sweden's largest photovoltaic system installations on a roof. It has raised great interest and regularly attracts study visits from many different countries.

The second photovoltaic system is on the roof of the Port of Nynäshamn office building. It came into operation in December 2014 and was expanded during the summer of 2015. The facility is approximately half the size of the one at Frihamnen.

The third photovoltaic system facility was built in 2015 at the Port of Kapellskär. The fourth facility is placed on the roof of the new passenger terminal in Värtahamnen. It came into operation in the summer of 2016.

The photovoltaic system at Frihamnen

  • The system consists of 885 solar panels.
  • The total photovoltaic system surface area is around 1 400 m².
  • The maximum power output is around 225 kW.
  • The estimated annual electricity production is around 200 000 kWh, which equates to the annual power consumption of nine average-size detached houses.
  • The total cost of the facility was approximately SEK 3 million. However, Ports of Stockholm was granted 35 percent (about SEK 1 million) in state subsidies.
  • The price per kWh produced was previously around SEK 0.75 with all costs, grants, depreciation, maintenance, wear and tear and including the addition for electrical certification. From 1 July 2016 Ports of Stockholm has paid an energy tax of SEK 0.29 per kWh for the electricity produced, resulting in an electricity price of around SEK 1.05 per kWh.
  • The facility should have paid for itself within ten years. With the energy tax it will be around 15 years before the investment costs are recouped.

The photovoltaic system at the Port of Nynäshamn

  • The system consists of just over 500 solar panels.
  • The total photovoltaic system area is around 800 m².
  • The maximum power output is around 125 kW.
  • The estimated annual electricity production is around 125 000 kWh.
  • The total cost of the facility was around SEK 1.4 million. However, Ports of Stockholm was granted 35 percent (about SEK 480,000) in state subsidies.
  • The price per kWh produced was previously around SEK 0.75 with all costs, grants, depreciation, maintenance, wear and tear and including the addition for electrical certification. From 1 July 2016 Ports of Stockholm has paid an energy tax of SEK 0.29 per kWh for the electricity produced, resulting in an electricity price of around SEK 1.05 per kWh.
  • The photovoltaic installation should have paid for itself within ten years. With the energy tax it will be around 15 years before the investment costs are recouped.

The photovoltaic system at the Port of Kapellskär

  • The system consists of 255 solar panels.
  • The total photovoltaic system area is around 400 m².
  • The maximum power output is around 60 kW.
  • The estimated annual electricity production is around 55 000 kWh.
  • The total cost of the facility was approximately SEK 1.2 million.
  • The price per kWh produced is around SEK 1.2 with all costs included, depreciation, maintenance, wear and tear and including the addition for electrical certification.
  • The facility will have paid for itself within twenty years.
  • The photovoltaic installation at Kapellskär is owned by a separate company and Ports of Stockholm pays no energy tax on the electricity produced there, as the maximum wattage is less than 255 kW.

The photovoltaic system at Värtahamnen

  • The system consists of 166 solar panels.
  • The total photovoltaic system area is around 270 m².
  • The maximum power output is around 55 kW.
  • The estimated annual electricity production is around 55 000 kWh.
  • The passenger terminal in Värtahamnen strives to be certified according to the environmental classification system Miljöbyggnad Guld. A photovoltaic system was a natural part of the ecocycle when the terminal was built. Therefore no separate cost for the facility is reported.