Environmental Report–How we calculate your climate footprint

Every month, as a tenant in an Entra building, you receive an environmental report. This report gives you an overview of your share of the building’s total water consumption, energy use, and waste volumes. The report also shows how much greenhouse gas emissions come from your energy consumption and waste. Below, you’ll find an explanation of how we calculate these figures.

Kontorbygget produsere mer fornybar energi enn det forbruker
Several of Entra’s properties produce green energy
Foto: Tove Lauluten
_/image/df0c358c-b8b5-4121-88e4-31af44380651:787ac7525c9dbc690af3fa816514aae067fee413/block-166-91/Powerhouse%20Kj%C3%B8rbo%20solceller.jpg?quality=70

How we calculate greenhouse gas emissions from energy consumption 

Electricity 

The electricity in Norway is part of a larger European power system and comes from various energy sources – most of it is renewable, but some electricity is imported from other sources abroad. If you want to learn more about how the Norwegian electricity mix is put together, you can read more at NVE here:

Guarantees of origin are a certification scheme for electricity that shows customers that a certain amount of electricity has been produced from a specific energy source. By purchasing guarantees of origin, you support the production of an equivalent amount of electricity from a renewable source. 

Guarantees of origin can only be purchased for electricity. There is no equivalent scheme for district heating or district cooling 

Entra does not purchase guarantees of origin on behalf of tenants, but you can easily arrange this yourself – just contact Noova for assistance. 

How we calculate emissions in the environmental report 

Greenhouse gas emissions from electricity are calculated using a location-based emission factor for electricity in Norway. The emission factor is calculated and provided by the International Energy Agency (IEA): link

District heating and district cooling 

Most buildings in Entra’s portfolio are connected to the district heating and cooling systems in their city. These are large central plants that supply neighborhoods or several buildings with energy for heating, hot water, cooling, or industrial processes. 

Greenhouse gas emissions from district heating in the environmental report 

Greenhouse gas emissions from district heating are calculated using the emission factor for the specific district heating plant the building is connected to. The emission factor is calculated and provided by Norsk Fjernvarme: link

Greenhouse gas emissions from district cooling in the environmental report 

Emissions from district cooling are calculated using the emission factor for the specific cooling plant the building is connected to. The emission factor is based on the energy sources used by the plant, as reported by Norsk Fjernvarme (link) , and follows the methodology from the report “Klimaregnskap for fjernvarme 2020” by Norsk Energi: link

How we calculate greenhouse gas emissions from waste 

We use emission factors for each waste fraction, provided by DEFRA, EcoInvent 3.11, and EPA. 

DEFRA: link

EcoInvent: link

EPA: link