Why the FCC’s proposed abandonment of Equivalent Power Flux Density restrictions matters more to your business case than your orbital slot

On April 9, 2026, FCC Chairman Brendan Carr announced the Commission will vote April 30 on new rules replacing EPFD (Equivalent Power Flux Density) limits with performance-based interference standards. If adopted, NGSO satellite operators can increase power levels by up to 7x, unlocking what the FCC estimates as $2+ billion in economic value and 180% capacity increase for LEO broadband.

This isn’t a technical tweak. This is the FCC choosing sides in a fundamental spectrum allocation battle between incumbent geostationary (GSO) operators and new non-geostationary (NGSO) mega-constellations.

For GSO operators (Viasat, SES, Intelsat, DirecTV): This represents existential threat. Their business models depend on protected spectrum access that EPFD limits guarantee.

For NGSO operators (Starlink, Kuiper, OneWeb): This unlocks the economic viability of direct-to-device (D2D) and next-generation LEO services that current power limits make impractical.

For satellite operators planning missions in 2026-2028: Your link budgets, frequency selection, and interference coordination strategies just changed. Fundamentally.

This post explains what EPFD limits actually protect, why the FCC is abandoning them, what “performance-based” interference standards mean in practice, and how this shifts competitive dynamics in the satellite industry.

What EPFD Limits Actually Are (And Why They Exist)

EPFD = Equivalent Power Flux Density: An ITU-mandated calculation that limits how much RF energy NGSO satellites can direct toward geostationary satellite receivers.

The physics problem: GSO satellites sit 36,000 km above Earth in fixed positions. Their receivers are designed to “look” at specific points on Earth, expecting signals from known terrestrial locations.

LEO satellites zip past at 500-1,200 km altitude. As they pass through a GSO satellite’s receive beam, they can dump massive amounts of RF energy directly into GSO receivers—far more power than the GSO system was designed to handle.

Without EPFD limits: A LEO constellation broadcasting at full power could render GSO satellite receivers useless, creating billions in losses for existing GSO operators.

With EPFD limits: NGSO operators must reduce transmission power when satellites pass through GSO satellite protection zones, ensuring GSO systems aren’t overwhelmed.

Current ITU EPFD limits (established WRC-2000, updated WRC-2019):

• Ku-band: -155.2 dBW/m²/MHz aggregate interference threshold
• Ka-band: -153.6 dBW/m²/MHz aggregate interference threshold

These numbers translate to practical operating constraints:

• NGSO satellites must reduce power by 10-20 dB when within 10-degree avoidance zones around GSO orbital positions
• For mega-constellations, this creates coverage gaps and service quality degradation in equatorial regions where GSO satellites cluster

Why The FCC Is Abandoning EPFD (And Why Now)

The FCC’s official rationale: EPFD limits were created 25 years ago when LEO constellations were hypothetical. Now they’re real and economically vital. The limits “overprotect” GSO systems, preventing NGSO operators from delivering services that benefit consumers.

Translation: The satellite industry has changed. GSO incumbents no longer define the market. NGSO mega-constellations represent the future of satellite broadband, and EPFD limits are holding back $2B+ in economic growth.

What triggered this specific rulemaking:

SpaceX partial waiver (January 12, 2026): FCC granted SpaceX permission to operate Gen2 Starlink satellites at higher power levels than EPFD limits allow, on condition they coordinate with affected GSO operators.

This waiver served as proof-of-concept that higher power NGSO operations don’t automatically destroy GSO services—if done with proper coordination.

Political alignment: Trump Administration “Build America Agenda” explicitly prioritizes:

• Expanding broadband access (NGSO mega-constellations deliver this)
• U.S. commercial space leadership (SpaceX, Amazon represent U.S. advantage over foreign competitors)
• Deregulation and “permissionless innovation” (EPFD limits are government-imposed restrictions)

FCC Chairman Carr has framed EPFD reform as removing “government overprotection” that benefits a few legacy operators at the expense of innovation and consumer access to next-gen services.

The unstated economic reality: GSO satellite economics are deteriorating. Launch costs have dropped 10x in a decade, making LEO constellations cost-competitive with GSO for the first time. EPFD limits are one of the last regulatory advantages GSO operators hold.

If the FCC abandons EPFD protection, GSO business models face massive disruption.

What “Performance-Based” Standards Actually Mean

Current EPFD regime: Prescriptive limits on power levels based on theoretical interference calculations. Operators demonstrate EPFD compliance through engineering analysis before launch.

Proposed performance-based regime: No fixed power limits. Instead, operators certify they will:

1. Coordinate with potentially affected GSO operators before operations begin
2. Monitor actual interference in real-time
3. Reduce power or cease transmissions if harmful interference detected
4. Implement automated interference mitigation systems

Practical differences:

Current EPFD Regime	Proposed Performance-Based Regime
Power limits set by regulation	Power limits negotiated operator-to-operator
Compliance demonstrated via analysis	Compliance demonstrated via operational monitoring
FCC enforces violations after the fact	Operators resolve interference disputes directly
GSO operators protected by default	GSO operators must prove harmful interference occurred
NGSO operators bear all avoidance costs	Costs shared between NGSO and GSO operators

What this means operationally:

For NGSO operators: You can broadcast at higher power, but you must:

• Install real-time interference monitoring systems
• Maintain 24/7 coordination capability with all potentially affected GSO operators
• Implement automated power reduction when GSO protection zones are entered
• Retain detailed operational logs proving interference mitigation

Budget impact: $500K-$2M per constellation for monitoring and mitigation infrastructure. But this unlocks potentially $50M-$500M+ in additional revenue from higher-capacity services.

For GSO operators: You lose regulatory protection and must:

• Monitor your own systems for NGSO interference
• Prove interference is harmful (not just detectable)
• Coordinate directly with NGSO operators to resolve issues
• Accept that some level of interference is now “normal” operating environment

If you can’t detect and document harmful interference, you have no enforcement basis. The burden shifts from NGSO operators proving they don’t interfere to GSO operators proving they are being interfered with.

The Industry Split: Why This Is So Contentious

In favor (NGSO operators and tech industry):

• SpaceX: Explicitly stated that EPFD limits prevent direct-to-device services. Higher power enables cell phone connectivity without ground infrastructure.
• Amazon (Project Kuiper): Supports EPFD reform as essential for competitive parity with Starlink
• Satellite Industry Association: Generally supportive, representing newer NGSO operators
• Rural broadband advocates: View NGSO as solution to connectivity gaps

Opposed (GSO incumbents):

• Viasat: Filed detailed technical analysis arguing performance-based standards will create “unmanageable interference” for GSO systems
• SES & Intelsat: Jointly stated that abandoning EPFD “eliminates decades of international coordination frameworks”
• DirecTV: Expressed concerns about impact on direct-broadcast satellite TV services
• National Association of Broadcasters: Worried about spillover effects on terrestrial spectrum

The core dispute:

NGSO position: “GSO operators are using EPFD as regulatory capture to block competition. They have no evidence that higher NGSO power levels cause actual harmful interference when properly coordinated. The FCC should enable innovation, not protect incumbents.”

GSO position: “Performance-based standards only work if NGSO operators actually coordinate and mitigate. In practice, mega-constellations will optimize for their own economics and leave GSO operators to prove interference after the fact, which is nearly impossible in complex multi-satellite environments.”

Both sides have valid technical points. The question is fundamentally about regulatory philosophy: should the FCC protect incumbents or enable disruption?

The Trump FCC has clearly chosen disruption.

Immediate Implications for Mission Planning

If You’re Planning an NGSO Constellation

You just got a major economic advantage—but with new technical requirements.

New capabilities enabled by higher power:

• Direct-to-device services (D2D) without ground station infrastructure
• Higher throughput in high-latitude regions
• Smaller user terminals (higher satellite power = lower terminal receive requirements)
• Better service quality in challenging weather conditions

New infrastructure required:

• Real-time GSO avoidance algorithms integrated into satellite ops systems
• Interference monitoring dashboards and alert systems
• Automated power reduction triggers based on orbital geometry
• Coordination databases tracking all GSO positions and protection zones

Budget additions (one-time + ongoing):

• Initial system development: $500K-$2M
• Ongoing operational monitoring: $100K-$300K annually
• Legal costs for GSO coordination agreements: $50K-$150K per major GSO operator

Strategic consideration: Early movers have advantage. The first NGSO operators to implement robust interference mitigation systems will set industry standards that FCC likely adopts as de facto requirements.

If you’re filing FCC applications in 2026-2027: Reference SpaceX’s January 2026 waiver approach as template. Demonstrate proactive coordination plans and monitoring capability.

If You’re Operating GSO Satellites

You just lost regulatory protection. Now what?

Immediate actions:

1. Install interference monitoring: If you can’t detect and document NGSO interference, you can’t invoke FCC enforcement. Budget $200K-$500K for monitoring infrastructure.
2. Inventory your NGSO interference risks: Which NGSO constellations operate in your frequency bands? What are their orbital geometries relative to your satellite positions? Where are your vulnerability windows?
3. Engage proactive coordination: Don’t wait for NGSO operators to contact you. Reach out now to negotiate coordination agreements before new rules take effect.
4. Document baseline performance: Establish clear operational baselines now, before increased NGSO power levels complicate attribution of interference sources.

Strategic options:

Option A: Adapt: Invest in interference mitigation, coordinate with NGSO operators, accept new operating environment.

Option B: Exit: Accelerate retirement of Ku/Ka-band GSO assets, shift to C-band or other less contested spectrum.

Option C: Fight: Continue opposition through ITU processes and international coordination. U.S. FCC may abandon EPFD, but ITU standards remain international law.

Realistic assessment: Option C delays the inevitable but doesn’t stop it. If U.S. abandons EPFD protection, other administrations will follow. GSO operators who don’t adapt will be disrupted.

If You’re Selecting Frequencies for a New Mission

The old calculus just changed.

Ku-band (12-18 GHz): Most contested. Heavy GSO incumbents + proliferating NGSO systems. EPFD reform makes this band more attractive for NGSO, less attractive for GSO.

Ka-band (26-40 GHz): Similar dynamics. EPFD reform enables higher-power Ka-band NGSO operations.

C-band (4-8 GHz): Less affected by EPFD changes (primarily terrestrial interference concerns). Potential safe haven for GSO operators seeking less contested spectrum.

V-band and higher (40+ GHz): FCC simultaneously pursuing additional spectrum allocation here. If you can tolerate atmospheric attenuation, millimeter-wave bands offer greenfield opportunity.

Recommendation for risk-averse missions: Avoid Ku/Ka unless you have no choice. The next 3-5 years will see significant NGSO power increases in these bands as operators exploit new rules. Interference coordination will be complex and expensive.

Recommendation for aggressive missions: Ku/Ka just became more valuable. If you can build robust interference mitigation, you’ll have competitive advantage over operators still designing to old EPFD limits.

What Happens Next: Timeline and Wildcards

April 30, 2026: FCC votes on Report and Order. Expected to pass 3-0 or 4-0 (unanimous or near-unanimous).

May-June 2026: Rules published in Federal Register. Effective 30-60 days post-publication.

Q3 2026: New rules take effect. NGSO operators begin filing applications or amendments requesting higher power operations.

Q4 2026-Q1 2027: First operational implementations. SpaceX likely first mover (they already have partial waiver).

2027-2028: Shakeout period. GSO operators either adapt or face service degradation. NGSO operators learn real-world coordination costs.

Wildcards that could change everything:

1. ITU pushback: While FCC can change U.S. rules, ITU Radio Regulations remain international law. If foreign administrations object to U.S. abandoning EPFD compliance, international coordination gets messy. Next World Radiocommunication Conference (WRC-2027) could revisit this.

2. Harmful interference incidents: If GSO services actually degrade due to NGSO power increases, public backlash could force FCC reversal. One high-profile outage (DirecTV during Super Bowl, for example) would shift political calculus immediately.

3. National security concerns: If increased NGSO power levels create interference for military GSO communications, DoD could intervene. National security trumps commercial considerations.

4. International retaliation: If U.S. NGSO systems interfere with foreign GSO assets, affected countries could restrict Starlink/Kuiper operations in their territories. Economic leverage cuts both ways.

Most likely outcome: Rules take effect largely as proposed. Some interference incidents occur but are resolved through coordination. GSO economics deteriorate over 5-10 years but don’t collapse immediately. NGSO operators capture majority of new satellite services revenue growth.

Strategic Takeaways for Decision-Makers

For CEOs and executives:

• EPFD reform is one-way door. Once FCC abandons protection, it’s not coming back. Position company strategy accordingly.
• If you’re NGSO: invest in coordination infrastructure now. It’s table stakes for exploiting new power flexibility.
• If you’re GSO: diversify spectrum use, accelerate C-band adoption, or plan managed decline of Ku/Ka assets.

For program managers:

• Build higher NGSO interference assumptions into link budgets if you’re planning GSO missions
• Budget for coordination infrastructure if you’re planning NGSO missions
• Anticipate 12-18 month shakeout period where industry learns new interference coordination norms

For chief engineers:

• Real-time interference mitigation is no longer optional for NGSO systems
• GSO systems need monitoring capability to document interference for enforcement
• Adaptive power control and beam steering become critical capabilities, not nice-to-haves

For legal and regulatory teams:

• Template coordination agreements from SpaceX waiver are likely starting point for industry standards
• International coordination through ITU becomes more complex, not less
• Enforcement burden shifts from FCC to inter-operator dispute resolution

The meta-lesson: The FCC is remaking satellite spectrum policy in real-time. Part 100 modernizes licensing. EPFD reform modernizes interference rules. Upcoming 20+ GHz allocation adds new spectrum. Collectively, these represent the biggest regulatory shift in U.S. satellite policy since the 1990s.

Operators who treat this as business-as-usual will be disrupted. Operators who adapt quickly will capture outsized returns.