Enel Green Power, part of the Italy-based power group Enel, has launched construction on another large-scale BESS in Chile.
Why it matters: Grid-forming tech is shifting from a niche requirement to a mandatory standard for any developer wanting to avoid massive curtailment in high-penetration solar markets like Iberia.
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Enel isn’t just building a battery in the Atacama; they are stress-testing the future of the Iberian peninsula in a remote desert laboratory. For developers in Spain and Portugal, this 100MW project is a crystal ball. Chile faces the exact same 'solar-heavy, transmission-light' bottleneck that is currently eroding IRRs in Andalusia and the Alentejo.
The End of the 'Polite Guest' Inverter
The grid-forming (GFM) label is the only part of this news that actually matters. Traditional inverters are 'grid-following'—they are polite guests that wait for the grid to set the frequency before they start contributing. GFM inverters, however, behave like virtual synchronous machines. They provide the 'inertia' that retiring coal and gas plants used to provide. As we phase out thermal plants across Europe, the grid becomes fragile. If you’re a developer planning a 20MW+ project in a weak part of the Portuguese interior, E-REDES is going to start demanding GFM capabilities sooner than you think.
The Cost of Stability
Enel is likely leveraging software layers from vendors like SMA, Tesla, or Nidec to prove that renewables can maintain grid strength during a fault. In Spain, we saw curtailment rates spike to nearly 15% in some regions last year because the grid simply couldn't handle the influx of non-synchronous power. If your project doesn't help solve the stability problem, it will be the first to be throttled by the TSO.