Chapter 7

Phase 4: Integration

Connecting fusion power plants to electrical grids, international research networks, and regulatory frameworks for commercial deployment.

Grid Integration

A fusion power plant must integrate seamlessly with electrical grids, providing reliable baseload power while supporting grid stability services.

Power Plant Interface

Parameter	Specification
Gross Output	500-2000 MW (thermal)
Net Electric	150-700 MW
Grid Voltage	400 kV AC
Frequency	50/60 Hz ±0.5%
Power Factor	> 0.95
Ramp Rate	5-10% per minute

Grid Services

Fusion plants can provide multiple grid services:

• Baseload Power: 85-90% capacity factor, >90% availability
• Frequency Regulation: Response within 30 seconds, ±10% range
• Voltage Support: ±200 MVAR reactive power
• Black Start: Capability to restart grid from shutdown (optional)

International Data Sharing

The global fusion community benefits from shared data and collaborative research. WIA-FUSION enables standardized data exchange across borders.

ITER Member Network

Data sharing categories:

• Public: Published results, performance summaries
• Restricted: Raw data, proprietary analysis (member access only)
• Real-time: Anonymized plasma parameters, benchmarks

Private Company Integration

The WIA-FUSION standard also supports private fusion companies:

Company	Integration Status
Commonwealth Fusion Systems	WIA-FUSION compliant
TAE Technologies	Data format compatible
Helion Energy	API integration planned
Tokamak Energy	Full compliance

Regulatory Framework

Fusion power plants require regulatory approval, though the framework differs significantly from fission due to fusion's inherent safety.

Licensing Phases

1. Design Certification: Safety analysis, environmental assessment, security plan
2. Construction License: Quality assurance, inspection protocols
3. Operating License: Commissioning tests, operator training
4. Decommissioning Plan: Waste management, site restoration

Fusion-Specific Advantages

Supply Chain

Fusion requires specialized materials and components with limited global suppliers:

Component	Challenge	Status
HTS Superconductors	REBCO tape production	Scaling up
Tungsten Divertor	High heat load tolerance	Qualified
Tritium	Limited global supply (~25 kg)	Breeding required
Beryllium First Wall	Toxicity, limited suppliers	Alternatives sought

Economic Integration

Fusion must be cost-competitive with other energy sources to achieve widespread deployment:

Energy Source	LCOE ($/MWh)
Coal	$65-150
Natural Gas	$40-80
Nuclear Fission	$60-120
Solar	$30-50
Wind	$25-50
Fusion (2035 FOAK)	$100-150
Fusion (2050 mature)	$30-50