The development comes as aircraft manufacturers increase electrical loads across commercial and other turbofan-powered platforms. Future Market Insights (FMI) finds that this transition is supporting an Electrical Starter-Generator Systems for Turbofan Engines Market expected to grow from USD 900.0 million in 2026 to USD 1,600.0 million by 2036, representing a 5.8% CAGR over the forecast period.

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Why are electrical starter-generator systems gaining commercial importance?

For aircraft manufacturers and engine suppliers, starter-generators are no longer limited to engine-start functions. A single engine-mounted unit can support starting and subsequent electrical generation, reducing the need for separate equipment and helping aircraft programs manage weight, packaging, and electrical architecture requirements.

The shift toward more-electric aircraft is increasing the importance of reliable generator output after engine start. Aircraft systems require stable electrical power for cockpit electronics, cabin systems, flight controls, and other onboard functions. This creates a stronger requirement for starter-generators that can maintain performance under engine heat, vibration, and changing electrical loads.

OEM installation is particularly important because starter-generator systems must be integrated with the engine and aircraft electrical architecture before certification. FMI estimates OEM installation will account for 62.0% of sales channel demand in 2026. This gives engine and aircraft manufacturers significant influence over supplier qualification, controller compatibility, and system validation.

Commercial aircraft are also expected to remain a major demand source. FMI estimates commercial aircraft will account for 58.0% of aircraft use demand in 2026. High aircraft utilization and frequent engine starts create continuing requirements for durable electrical starting and generation equipment.

Which technologies and aircraft platforms are shaping demand?

AC starter-generators are projected to remain the leading system type, accounting for 47.0% of demand in 2026. Their ability to provide electrical power following engine start makes them suitable for aircraft platforms where electrical loads are increasingly integrated into propulsion and aircraft systems.

Narrow-body turbofans are forecast to account for 56.0% of engine platform demand in 2026. These aircraft operate frequent short- and medium-haul routes, increasing the importance of starter-generator durability and serviceability across repeated flight cycles.

The market is also moving toward higher electrical integration. GE Aerospace's HyTEC program has explored electric motor-generators integrated into a high-bypass commercial turbofan, with testing using a modified Passport engine. Such programs demonstrate how engine-mounted electrical machines can become part of future propulsion architectures rather than remaining standalone accessory components.

Voltage architecture is another area influencing supplier requirements. The 115 VAC category is expected to account for 41.0% of demand in 2026. As aircraft electrical loads increase, suppliers must balance power output, weight, thermal management, and controller performance while maintaining certification requirements.