81% of the world’s energy supply today is produced from fossil fuels, including 54% from oil & gas (source IEA Data and Statistics). The production and distribution of oil & gas accounts for 15% of global greenhouse gas emissions. Although oil & gas will be part of the energy system for years to come, the sector is facing massive changes. Major oil & gas companies around the world are setting to become net-zero carbon emission energy businesses by 2050 to actively attain the Paris Agreement goals.

At Ramboll, we are committed to guiding our clients towards lowering impacts from oil & gas operation and supporting the industry in achieving the goal of becoming net-zero by 2050. The challenge is complex and requires a major shift in business, but all our partnerships have the common goal of reducing carbon emissions as categorised in the Green House Gas Protocol.

Scope 1: Direct CO2 emissions from own operations

Direct emissions stem from flaring, flue gas and process leakage. Ramboll has a long track record supporting enhanced production efficiency and rationalisation of oil & gas operation with substantial positive implications on both carbon footprint and operational cost. Our environmental services offer leading insights into scanning, locating and eliminating leakage of volatile organic compounds. Digitalisation of offshore operation through application of our True Digital Twin reduces requirement for vessel transfer services and acts a measure for lifetime extension further reducing the lifetime scope 1 emissions of the operation.

Selected project references

  • Energy audit for Total and HESS
  • Detailed design for gas recovery system for Dan FF, Maersk Oil
  • Feasibility study for reduced CO2 emissions for Gjøa semi-submersible, Neptune Energy Norge
  • Evaluation of various CO2 reducing measures on the Norwegian Continental Shelf, Norwegian Oil Directorate
  • Flare reduction for Al Shaheen field, Maersk Oil Qatar
  • Conceptual and detailed design for produced water injection at Gorm F, Maersk Oil
  • Lifetime extension with True Digital Twin for Siri platform, DONG Energy

Scope 2: Indirect CO2 emissions related to own consumption of purchased energy

The European Green Deal as well as national climate action plans find electrification an effective measure to decarbonise. Oil & gas production is a very energy intensive operation and energy is predominately obtained through burning of natural gas in own turbines.

Electrification of offshore operation creates the opportunity to reduce or even eliminate the emissions associated with power production by integrating the operation with other energy networks – either by power-from-shore or by dedicated renewable energy production facilities.

Scope 2 emissions may be monitored, controlled and eliminated through planned sourcing of the imported energy. Ramboll has more than a decade of experience in electrification of offshore operation. Our broad organisation covers not only oil & gas but also wind turbine technology and environmental disciplines that can support our clients in optimising the feasible integration of renewable energy supply to their operation.

Selected project references

  • Feasibility study on electrification from shore for South Arne field, Hess Denmark
  • Feasibility study on electrification from shore for Siri field, DONG Energy
  • Feasibility study on green power for Hild field, Total E&P
  • Feasibility study for solar, wind, and hybrid wind-solar based systems and power through subsea cable, Qatar Petroleum
  • Feasibility study for cathodic protection with solar panels for Duckhan field, Qatar Petroelum

Scope 3: Other indirect CO2 emissions related to supply chain and use of sold products

Other indirect CO2 emissions relate predominately to the consumption of produced oil & gas products sold to end-users and intermediates. In addition, emissions related to construction, installation and decommissioning of facilities as well as business travel and employee commute counts as scope 3. Two paths lead to reduction of scope 3 emission.

First, reduction of carbon footprint through investment and development of offsetting mechanisms such as carbon capture storage (CCS). Ramboll covers the full value chain of CCS and our newly established cross-sector task force addressing the opportunities of CCS is well positioned to support an integrated approach to CCS. Our experienced decommissioning team can assist our clients in carbon effective end-of-field activities.

Second, reduction of carbon intensity of our clients’ energy portfolio must be considered. Carbon intensity of own production may be reduced by investing in co-generation of hydrogen and / or biogas in conjunction with current natural gas production. Dedicated investment in renewable energy such as wind, solar or wave is also an option.

Further, selecting and advising clients and end-users on how to decarbonise their operation – reducing your customers’ scope 1 and 2 emissions will reduce your scope 3 emissions – is a discipline that requires cross-sector insights. Ramboll’s broad technical insight combined with the experience of our in-house management consultants offers the cross-sector and cross-value chain capability required for an effective and targeted implementation.

Selected project references

  • Feasibility and scoping study on a greenhouse gas-neutral Commission to be achieved as early as possible prior to 2050, Brussels, Belgium, European Commission DG CLIMA  
  • The Road towards Carbon Neutrality in the different Nordic Countries, Miljø- og Fødevareministeriet
  • CO2-baseline for the Municipality of Odense, Odense Kommune
  • Feasibility study for carbon capture and e-fuel production in Greenland
  • Technical aspects of a process plant for Hydrogen storage, Gas Storage Denmark

Sustainable oil & gas services

Our sustainable oil & gas services are tailored to support our clients reduce their scope emissions and reach climate goals.

Click on the items below to learn more about our sustainable oil & gas services.

  • Sustainable oil & gas services
    Sustainable oil & gas services
    Sustainable oil & gas services
    Sustainable oil & gas services
    Sustainable oil & gas services


  • Electrical Power Studies
  • Design of transformer module at host platform
  • Modifications to existing power distribution
  • Modification and replacement to electrical drives

Integrating renewables

  • Integration of solar panels
  • Integration of wind turbines
  • Power to X (Energy conversion)
    • Hydrogen
    • Methanol (CCUS)
    • Ammonia
  • Energy Storage and distribution
    • Hydrogen storage

Increasing energy efficiency

  • Process and Energy optimization
    • Optimising original design
    • Adapting to operational conditions and boundaries from reservoir
  • Distribution and balancing of power between platforms
  • Generator optimisation
  • Implementation of VSD on pumps and compressors
  • Energy audits
  • Replacement of fired heaters with electrical heaters
  • Remotely operated facilities

Technology development

  • True Digital Twin – lifetime extension and reduced inspections
  • Intelligent condition monitoring
  • Development of software algorithms including machine learning
  • Remotely operated facilities
  • Transfer of competences between oil & gas and wind as well as energy conversion

Emission reduction

  • Flare & vent reduction including zero flaring projects
  • VOC recovery unit for tankers and terminals
  • Gas reinjection
  • Replacement of fired heaters with electrical heaters
  • Decommissioning
  • Reduced chemical consumption in separation by utilizing waste heat
  • Emission scanning
  • Improved water treatment
  • Produced water injection
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