Maintain and improve grid stability with the integration of renewable energy

Integration of renewable energy into the grid

Ensuring the reliability, stability, and security of networks

The growing integration of renewable energies—solar PV, wind, and biomass—is profoundly transforming the planning and operation of electrical grids. For electric utilities, this transition requires rigorous technical studies to ensure the reliability, stability, and security of the grids while promoting the energy transition.

At 3E Eng., we conduct comprehensive renewable energy integration analyses to support distributors, transmission companies, and regulators in their strategic decisions.

Studies tailored to the realities of networks

Our experts assess the impact of new production sources on:

  • Grid capacity: power flow and short-circuit calculations to identify voltage, overload, and protection constraints.
  • Frequency and voltage stability: dynamic modeling to analyze the effect of variable renewable energy (VRE) and propose solutions (storage, ancillary services, reactive control).
  • Power quality: analysis of harmonics, voltage fluctuations (flicker), and risks associated with the large-scale connection of photovoltaic or wind power systems.
  • Protection and decoupling rules: validation of installation compliance with network codes (e.g., Hydro-Québec, IEC, IEEE, EN 50549).
  • Evolution scenarios: network simulation to anticipate the impact of growing demand and the gradual integration of renewable energies.

Expertise confirmed by international projects

We have conducted renewable energy integration studies for several electricity companies and energy ministries:

  • Électricité de Djibouti (EDD): analysis of the integration of residential and industrial photovoltaic self-generation systems, definition of harmonic limits and protection requirements.
  • Somalia (Mogadishu): modeling of the distribution network and low-cost development plan integrating new solar power plants and batteries.
  • São Tomé and Príncipe: proposal of stability solutions for an island grid aiming for 100% renewable energy, including sizing of BESS, synchronous condensers, and grid-forming inverters.

These experiences allow us to adapt our analyses to a variety of contexts: rapidly growing urban grids, isolated island systems, or national grids undergoing energy transition.

The benefits for your organization

With our services, electricity companies get:

  • A clear view of the technical limitations of the grid when it comes to renewable energy.
  • Concrete solutions to maintain reliability (storage, grid reinforcement, advanced protection).
  • Decision-making tools for planning and investment.
  • The guarantee of compliance with international standards and local connection codes.

Your partner for a successful energy transition

Thanks to our expertise in network planning, electrical modeling, and renewable energy integration, we support electric utilities in their transformation. Our goal: to ensure reliable, flexible, and sustainable networks that are ready to accommodate the clean energy of tomorrow.

Renewable energy integration analysis carried out

Planifier l'intégration du PV

Intégration du PV au réseau de Djibouti
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