Siemens Tech Tackles Grid Instability from Renewables

25 Jun 2025 CW Team

As renewables take up a growing share of global power generation, electricity grids are becoming more unstable due to the intermittent nature of solar and wind energy. Siemens Energy is addressing these challenges with advanced solutions designed to maintain voltage and frequency stability.

The company is promoting the deployment of Static Synchronous Compensators (STATCOMs) and synchronous condensers (SynCons) to help transmission systems cope with rapid fluctuations in grid conditions. These technologies offer flexible reactive power support and are being adopted worldwide to enhance grid resilience in the renewable era.

Stabilising voltage and frequency

STATCOMs provide dynamic voltage regulation, responding instantly to changing grid scenarios. They help maintain power quality, prevent equipment damage, and reduce the likelihood of outages caused by voltage dips or surges—problems increasingly common in renewable-heavy grids.

Synchronous condensers, meanwhile, restore rotational inertia that is lost when fossil fuel generators are phased out. This inertia is vital for frequency stability and system strength. SynCons also supply short-circuit power, reinforcing fault tolerance in weaker grid areas.

Integrated approach for a resilient grid

Siemens Energy combines these technologies to offer a comprehensive grid support solution, especially relevant for regions undergoing rapid clean energy transitions. This integrated approach helps safeguard reliable electricity supply as the world accelerates towards carbon neutrality.

Global deployment rising

Utilities and transmission operators globally are increasing investment in STATCOMs and SynCons as part of long-term grid strengthening strategies. These investments are key to ensuring that net-zero ambitions do not come at the cost of system stability and reliability.

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