Horizon Europe · Innovation Action · CL5-2025-02-D3-11

INVERTER SYSTEMS FOR POWER INTEGRATION AND RESILIENT ENERGY SYSTEMS

IN.SPIRE develops next-generation hybrid, modular inverter platforms, at both low and medium voltage, that orchestrate PV, storage, and grid interaction with unprecedented intelligence and resilience.

Project information:

~€6M

Total Grant

42

Months

13

Partners

2026-29

Duration

Medium-voltage PV

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Grid-forming control

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Digital twins

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Cybersecurity

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Predictive maintenance

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Interoperability

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EMI/EMC filtering

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Hot-swappable low-voltage hybrid inverter

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3 kV 3 MVA medium-voltage inverter

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Partial power processing

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SiC & GaN wide-bandgap devices

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Grid-forming control

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RfG 2.0-ready

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Multi-inverter coordination

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Automated Digital Twin

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AI health and condition monitoring

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Cyber-secure by design

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EMI/EMC filtering

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Topology-optimised cooling

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Predictive maintenance

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Plug and Play Interoperability

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Self-healing operation

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Inverter-aware yield forecasting

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EU-made components

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Medium-voltage PV □ Grid-forming control □ Digital twins □ Cybersecurity □ Predictive maintenance □ Interoperability □ EMI/EMC filtering □ Hot-swappable low-voltage hybrid inverter □ 3 kV 3 MVA medium-voltage inverter □ Partial power processing □ SiC & GaN wide-bandgap devices □ Grid-forming control □ RfG 2.0-ready □ Multi-inverter coordination □ Automated Digital Twin □ AI health and condition monitoring □ Cyber-secure by design □ EMI/EMC filtering □ Topology-optimised cooling □ Predictive maintenance □ Plug and Play Interoperability □ Self-healing operation □ Inverter-aware yield forecasting □ EU-made components □

What is IN.SPIRE:

The inverter as the intelligent backbone of future PV systems.

IN.SPIRE develops two complementary inverter platforms, one at low voltage, one at medium voltage, covering commercial, industrial, and utility-scale needs. Both are hybrid, modular systems designed to orchestrate PV, battery, and grid interaction flexibly and intelligently. A unifying methodology couples multi-objective optimisation with digital twins, steering innovations from early-stage design all the way to grid-connected prototypes.

Learn more

Eight technology frontiers.

Each innovation area addresses a distinct barrier to high-penetration PV integration in European grids.

Medium-voltage platform

A 3 kV DC-link, 3 MVA inverter built on 2.3 kV SiC half-bridge modules in a three-level topology with a novel overvoltage limiting network for unprecedented power density and reduced balance-of-system costs at utility scale.

Grid-forming Control

RfG 2.0-compliant grid-forming and grid-following control with GFM-aware MPPT reserve management and coordinated operation of multiple inverters across the plant and distribution grid.

Digital twins & Al diagnostics

Real-time health and condition monitoring (HCM) with sensor-enabled gate drivers with AI diagnostics, remaining-lifetime prediction, and self-healing fault isolation with hot-swappable modules.

Cyber-physical security

"Reflex" functions when receiving remote commands for grid stability, extending today's grid-code safety mechanisms and Cyber-physical protection with hardware-level safeguards and design guidanceready for standardisation.

Hybrid EMI/EMC filtering

Active noise cancellation in EMI filters integrated down to PCB level, for superior electromagnetic compatibility of wide-bandgap devices.

Plant-level analytics

Interoperable Plug-and-play asset data onboarding automatically builds the plant's digital twin and EMS; inverter-aware models and ML deliver early fault detection, predictive maintenance, and yield forecasting across the portfolio.

Low-voltage hybrid platform

A modular three-port (PV, battery, AC) inverter on CE+T's PRISMA line using Dual-Bus (D²B) partial-power processing, boosting efficiency and cutting cost and weight for commercial and industrial systems.

Topology-optimised cooling

Heat sinks designed by turbulent-flow topology optimisation and realised through 3D printing, removing more heat with less fan power for longer inverter lifetime.