This is how we can show that our Main Site is climate positive.
We apply the Greenhouse Gas Protocol (GHGP) as a starting point for our sustainability calculation. In addition to a full scope GHGP, we also include the potential emissions that our sites avoid through our unique way of reusing the heat.
Our data centers are built with a wooden construction for minimal environmental impact. In total, the actual tillage and construction have charged our CO2 calculation with 0,1 gr/kWh. The embedded carbon within land and building is depreciated over the economical life-time of the asset.
The technical installations in our data centers load our CO2 calculation with a total of 1,1 gr/kWh. This CO2 impact mainly comes from the production of the lithium-ion batteries that are part of our reserve power solution. The embedded carbon within the technical installations is depreciated over 10-15 years.
Our electricity consists of a mix of hydropower (75%) and wind power (25%) where both of these renewable energy alternatives are delivered with zero climate impact. We also apply a "Life Cycle Analysis" where CO2 loads from the actual construction and maintenance of these electric power plants are included in our calculation. We follow Vattenfall's calculations of the environmental impact in our calculations. In total, supplied electricity loads our CO2 calculation with 10,5 gr/kWh based on the electricity mix that the company purchases.
The business itself does not cause any environmental impact. The exception is when the reserve power (which consists of diesel generators) is tested monthly. The diesel consumed during these tests is included in our environmental calculation. In total, the tests load our CO2 calculation with 1,3 gr/kWh. Furthermore we also include the emissions caused by extraction and processing of oil before purchase adding an additional 0,9 gr/kWh.
Total for items 1-4: 13,9 gr/kWh
We reuse our excess heat in two ways. Both ways mean that the use of oil and gas decreases, which we include as a reduction in our CO2 calculation. During the colder part of the year, the excess heat site is used in the district heating system. This replaces oil and gas that would normally be used as a complement in heat generation. During the time of year when the excess heat is not needed in the district heating system, the heat is instead used to produce pellets. The pellets are then sold to private individuals and companies to be burned to generate heat, instead of using oil. The heat used in the district heating system avoides oil and gas equaling -9,5 gr/kWh, and the usage of pellets avoides emission of -39,4 gr/kWh. However the usage of pellets loads the CO2 calculation with 1,7 gr/kWh.
Total reduction point 5: -48,9 gr / kW
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