Reduced environmental impact in all areas of the business

Stena works for sustainable and ecologically sound use of resources, abiding by the precautionary principles for the protection of the environment, in order to prevent pollution, increase the efficiency of energy use and minimise waste and greenhouse gas emissions.

Stena Renewable’s wind farms are involved in the transition to a renewable energy system and therefore a better environment. In the hour it takes to read this report, Stena Renewable’s wind turbines will have produced sufficient electricity to drive an electric car more than 505,000 kilometres, or nearly 13 circuits of the earth.

Prize-winning methanol project

On 1 January 2015, a new directive came into force for shipping in the Baltic Sea, the North Sea, the English Channel and the coasts of North America. Under the new rules, the maximum permissible sulphur content for marine fuels used in the areas is 0.1%, compared with 1% previously and 3.5% in the rest of the world. One way to reduce sulphur emissions further is to use alternative fuels such as methanol. Use of methanol also reduces emissions of parti­culates and nitrogen oxides compared with conventional marine oil. The Stena Line ferry Stena Germanica has been converted to run on methanol in a pilot project that started in 2015. The project has been acknowledged with several awards during the year:

  • Green Ship Technology – GST Ship Owner of the Year Award
  • Innovation Award 2015 at the Swedish Maritime Day
  • Outstanding Green Initiative Award at the 2015 Global Business Excellence Awards in the UK
  • Pegasus Prize 2015 from Transportföretagen
  • Shippax Award 2016


The Stena Elektra project, which Stena Teknik launched in 2013, involves developing a vessel concept for the world’s first plug-in hybrid ship partially powered by electricity. The vessel will be capable of being charged with shore-based power when berthed, and running on electricity in port and through the archipelago, and then switching to diesel, methanol or natural gas (LNG) in open water. In coastal areas, emissions will be reduced to zero, while operating costs will also be drastically reduced.

Stena Elektra is basically a passenger and cargo ferry, 200 metres long, with a capacity of over 3,000 lane metres. The battery pack on board will be one of the largest battery installations in the world with a pack of lithium-ion batteries the size of two containers. It provides 10 MWh of electricity when fully charged, which is sufficient to power the ship for 30 minutes.

To test the usage of battery power further, a pilot study was initiated on Stena Jutlandica, where the plan is to use battery power to reduce the load on the auxiliary engines at start-up of the ship and during loading and discharging. Within the framework of this project, the auxiliary engines
will be partially powered by electric batteries.

“Care – We respect the world around us by being aware of our dependence, caring for our relationships and using the resources of the world sustainably and with care.”
From “Principles, convictions and basic values for Stena AB”.


Turning Stena Line’s food waste into biogas

Stena Line has been working for several years in a structured way to reduce food waste on its ferries. This is done by means of more efficient planning of purchasing and menus, and also by separation of food waste. Food waste was previously discarded with other combustible waste, but for some time now this waste has been separated and sent for combustion or biogas production. One tonne of food waste can produce biogas equivalent to 110 litres of petrol. The advantages for the vessel include reduced waste costs and a better work environment for kitchen staff as the work involves less heavy lifting.

Northern Marine Group certified under ISO 50001

Northern Marine Ferries (NMF), a subsidiary of Northern Marine Group, and the 21 ferries it operates, will be certified under the ISO 50001 energy management system in 2016. The purpose of this ISO standard is to optimise and improve the efficiency of energy consumption. Northern Marine Management, and the 79 tankers it operates, is already certified under ISO 50001.

Certification of the office building in Houston

Stena Realty’s new office building in Houston has been designed to minimise adverse environmental impacts. The design focuses on resource efficiency, such as reduced water consumption and ensuring responsible use of resources in the construction phase, in order to achieve the best possible work environment for the tenants. The building is certified under LEED Silver Certification, which benefits both Stena and the tenants.

Geothermal heating project in Malmö reduces carbon dioxide emissions by 67%

In 2016, Stena Fastigheter is conducting a large geothermal project in Malmö which includes 940 apartments. The project will reduce annual carbon dioxide emissions by about 750 tonnes, or 67%. This corresponds to the annual emissions for 3,500 cars.


Reduced environmental impact from properties

Stena Property’s biggest environmental impact comes from the use of energy in the form of electricity, heating and water for homes and premises. The focus is therefore on reducing energy consumption. The target is a 20% reduction between 2010 and 2020. Electricity consumption has already fallen by 20.1% and heating by 12.8% in the period 2010–2015. In addition, Stena Property only buys green electricity for all of its properties.

Procedures for energy efficiency

Blomsterlandet, which is owned by Stena Adactum, is conducting an energy saving project called Energy hunters. Employees are given information and involved in the process of making changes in their daily work that contribute to reduced energy consumption. These may include climate control indoors, efficient use of lighting and similar measures. The goal is that all 52 stores will participate in the work and achieve annual energy efficiency of at least 10%.

E-learning for reduced environmental impact

In 2015, Stena Line introduced the Save environmental e-learning course for its seagoing personnel. To date, over 2,400 persons have completed the training, which aims to increase employees’ awareness of how they can contribute to a reduced environmental impact in the course of their work. On completion of the training, the employees discussed in their working groups what specific changes they can make to reduce their environmental impact.

Stena Line’s total use of shore-based power in 2015 contributed to reduced oil consumption and avoided CO2 emissions of 13,000 (12,763) tonnes, equivalent to the annual emissions from 4,200 cars.


LED lighting reduces energy consumption

Over 250 lights on board Stena Drillmax were replaced with LED lights during the year. These consume about one-third of the electricity the previous lights consumed. The total savings will be over 560,600 kWh, equivalent to the annual consumption of 23 family households. In addition to the energy savings, the new lights require less maintenance, resulting in reduced maintenance costs.

Northern Marine Group’s environmental work recognised

Northern Marine Group received the Environmental Achievement Award for environmental excellence performance 2015 from the Chamber of Shipping of America.