What it sells
Heart makes electric airplanes with an all-electric range of 250 miles
Business model breakdown
Buyer: who owns the budget?
UnverifiedAirline fleet/network leadership buying regional aircraft.
Trigger: what makes them buy now?
UnverifiedRising fuel costs and carbon taxes/emissions fees on regional routes; need to cut operating cost.
Workflow: what inputs become what output?
Replaces turboprop/regional jet flying on short-haul routes with a 36-seat hybrid-electric aircraft (125 mi all-electric, 745 mi hybrid range, 30 min charging).
Economics: what it saves and how it charges
Aircraft sale; claims ES-36 has more than 40% lower aircraft operating costs than conventional regional aircraft at 2031 entry into service. Funded by about $190M of investor capital.
Funding history and coverage
| Round date | Stage | Amount | Investors | Source |
|---|---|---|---|---|
| — | Y Combinator Winter 2019 | — | Y Combinator | ycombinator.com |
Profiles summarize public reporting and company websites. Business-model notes are MaxBC's reading of that material, not confirmed facts; unknowns are left blank rather than guessed. Updated 2026-10-12.