Renewable energy deployment is moving fast worldwide. In this new cycle, the market is increasingly rewarding one thing: projects that can integrate smoothly into the power system.

Today, the key question is no longer only how much renewable electricity we can generate, but how we integrate it so the power system remains stable, reliable, and competitive.

A new cycle of renewable growth (2025–2030)

According to the International Energy Agency (IEA), in more than 80% of countries renewable capacity is set to grow faster between 2025 and 2030 than it did in the previous five-year period. This reinforces a central takeaway: as deployment scales, system integration and operability become the decisive factor for sustaining momentum.

Why flexibility is gaining importance

The IEA also highlights that as renewables expand, the system increasingly needs progress in areas such as:

  • Grid integration and realistic evacuation/grid planning

  • Supply chain resilience and equipment availability

  • Financing structures that support robust, long-term projects

In parallel, renewables’ share of global electricity generation is expected to keep rising: the IEA estimates it will increase from 32% in 2024 to 43% in 2030, and that the share of variable renewables will almost double to around 28%.

When generation is variable, the system needs flexibility to respond to:

  • Rapid changes in output (weather-driven variability)

  • Demand peaks at specific times

  • Grid constraints (real network capacity)

  • Balancing needs and operational stability

That is why grid investment and solutions that enhance flexibility are becoming crucial to maintain renewable growth with consistency and system performance.

What this means for project development

This shift is redefining how renewable projects are conceived in Europe. Increasingly, value is being placed on:

  • Realistic grid access and connection planning, supported by early-stage technical work

  • A long-term approach to permitting, licensing, and execution

  • Designs that are system-ready, reducing operational constraints and improving overall system contribution

In practice, the market is pushing projects that, beyond generating energy, fit well within the system and support efficient operations.

Storage and hybrid projects: flexibility in practice

Among the solutions with the greatest potential to provide flexibility, energy storage is becoming more prominent across European markets. Considering it early can influence critical development decisions such as connection strategy, sizing, and long-term operational viability.

At Tartessos Power Development, this evolution is reflected in recent public milestones, including:

  • The obtention of an urbanistic certificate for a stand-alone BESS project in Romania (planned capacity of 200 MWh)

  • The securing of a grid connection point for a 50 MW PV project with a battery (193 MWh) in Romania

In parallel, hybrid projects (combining technologies) are increasingly emerging as a route to improve delivery profiles and support grid integration.

How we approach it at Tartessos Power Development

At Tartessos Power Development, we develop and manage renewable project portfolios in line with this new market reality: integrating, from the outset, the critical elements that determine a project’s viability and its value within the system.

We offer a full service from greenfield to ready-to-build, including construction, commissioning, and maintenance. We also provide dedicated support across the permitting and licensing phase, from grid access and connection applications through to the commissioning licence, coordinating the different procedures required.

This approach enables projects to be designed with a long-term perspective and real execution capability across European markets, at a time when integration, grids, and flexibility are becoming decisive success factors.

A transition that requires integration, not only capacity

The message is clear: the energy transition is advancing, and sustaining its pace requires more prepared grids and greater flexibility, as the IEA underlines in its analysis of the next renewable growth cycle.

At Tartessos Power Development, we continue to develop projects with a technical, long-term perspective, helping ensure renewable energy is not only produced, but also integrated efficiently and delivers real value to the system.