The changes in electricity production methods induced by the energy transition and the development of a decarbonised energy on a large scale have a direct impact on the construction and operation of electrical networks.  The demand for electricity is increasing to meet the needs of growing populations and the industrial and economic growth of countries around the world. This trend, which will only continue in the coming years, has had a significant influence on the management of local power systems. And beyond the level of production necessary to meet this demand, the changes in production methods towards zero-carbon are disrupting the existing energy mix and directly impacting grids.

Mix énergetique

Adapting the networks to the growing demand for electricity

A greater consumption of electricity due to the increasing urbanisation of the global population or the industrialisation of countries requires adaptations to the networks which transport this electricity from production plants to delivery points. Modernisation, resilience to consumption peaks and continuity of service are the main challenges for tomorrow's electricity networks.

Eolienne énergie renouvelable

Integrate decarbonised energy into the grids

The continued development of nuclear power plants and the integration of renewable energies are at the heart of a decarbonised energy mix. But their integration into the electrical networks is not without effect and must be anticipated so that interconnections are made without destabilising grids (considering the variability of renewables or the location of new power plants are key aspects in the equation).

centrale électrique

Considering the regulatory constraints of each country in terms of networks

The regulations concerning the electrical network are not the same according to the continents and sometimes are significantly different between neighbouring countries. Respecting local norms and standards to develop or modernise the electrical network is therefore also a major challenge for electrical operators.


Assystem's experience for more than 50 years in the energy, nuclear and power sectors allows us to master the practices and constraints to be integrated for the management of an electrical network.
Our teams have strong capabilities in transmission and distribution, power system analysis studies and simulation, grid impact evaluation, engineering studies, and requirements management, and are used to manage projects taking full responsibility from start to finish:

  • Consulting & Project Management
  • Siting, permitting & environment
  • Feasibility, conceptual to tender design
  • Detailed design and specification of new installations
  • Standards assessment and validation

Assystem's strength also lies in its ability to support operators in the globality of their project: indeed, our teams will be able to participate in the development  of new nuclear power plants, in the implementation of renewable projects and to ensure their optimal integration to the local electrical networks in terms of transport and distribution.

Geological & geotechnical studies, environmental impact assessment

Impact analysis, design standards & regulations

Digital twin, modelling & simulation

Supply chain management & compliance

Our Offers

  • Project Management & Engineering Project Management & Engineering
  • Compliance, Safety & Security Compliance, Safety & Security
  • Digital & Data Digital & Data
Project Management
  • PMO (costing, scheduling, contract, ressources, risks)
  • Configuration management
  • Contracts & supply chain management
  • Construction supervision
  • Test & commissioning
  • Shut-down supervision
Discover our offers
  • Conceptual to tender design
  • Design Review
System Engineering
  • Control over requirements / PBS
  • Interface / change management
Discover our offers
Industrial Control Systems
  • Engineering & design
  • V&V / Programming
  • MRO
Discover our offers
Siting & Permitting
  • Siting & impact studies (ESIA, seismological, geological, geotechnical…)
  • Permitting
Discover our offers
  • Strategy & organisation
  • Lender Technical Advisor
  • Readiness assessment
  • Compliance diagnosis
  • Improvement / remediation plans
  • Commissioning Qualification Validation (CQV)
  • Computer System Validation & Data Integrity (CSV/DI)
  • Quality & HSE management
Discover our offers
  • Functional safety
  • Dependability
  • Nuclear safety
Discover our offers
  • Industrial cybersecurity
  • Security / site protection
Discover our offers
Digital System Engineering
  • MBSE Services (Model Based Systems Engineering)
  • BIM Services
  • PLM Services
  • Digital test & commissioning
  • Digital dismantling
Discover our offers
Industrial Data Science
  • Document to data
  • Master Data Management (MDM)
  • Robotic Process Automation (RPA)
  • Engineering search engine
  • Analytics & Artificial intelligence
Discover our offers
Digital Field Service
  • Predictive maintenance
  • Augmented operator
  • Digital twin
Project Control Solutions
  • Project delivery model
  • PMIS (Project Management Information Systems)
  • Complex planning optimisation


A question, a project?

Contact us