Funding Agency:
Department of Energy

ARPA-E seeks to mitigate the greenhouse gas emissions associated with commercial air travel at minimum economic cost by developing elements of an ultra-high efficient aircraft propulsion system that uses Carbon Neutral Liquid Fuels (CNLFs).2 Since these fuels generally either have lower specific-energies (kWh/kg) or are projected to have higher cost than traditional fossilbased jet fuels, ultra-high conversion efficiency is critical for the economic viability of this approach. An electrified propulsion system framework postulated by ARPA-E (Fig. 1) could potentially leverage multiple sources of stored energy (e.g. CNLF, batteries, etc.) to facilitate emerging propulsion concepts (e.g. distributed propulsion) and enable net-zero carbon emissions for long range, narrow-body, commercial aircraft. 

The objective of the Range Extenders for Electric Aviation with Low Carbon and High Efficiency (REEACH) program is the development of one element of the electrified propulsion system framework: a system for the conversion of chemical energy contained in energy dense CNLFs (green block in Fig. 1) to electric power for aircraft propulsion and hotel loads. (The development of the all-electric powertrain depicted in Fig. 1 is the objective of a separate ARPA-E FOA.3 )

The approach taken in the REEACH program is to pursue the development of the energy storage and power generation sub-system in a four-year effort with two distinct phases:

Phase I: Energy Storage and Power Generation (ESPG) system conceptual design and fuel conversion component risk reduction.

Phase II: Design and developmental prototype demonstration of a sub-scale fuel-to-electric power conversion device using a CNLF.

The current FOA and associated funding applies only to Phase I. However, ARPA-E requires that applicants include proposed task descriptions and budgets for both Phase I and II. 

Deadline for Concept Papers: Jan. 31, 2020

Agency Website

Eligibility Requirements

This FOA is open to U.S. universities, national laboratories, industry and individuals.

ARPA-E is not limiting the number of submissions from Applicants. Applicants may submit more than one application to this FOA, provided that each application is scientifically distinct. 



Amount Description

ARPA-E expects to make approximately $20 million available for new awards, to be shared between FOAs DE-FOA-0002240 and DE-FOA-0002241, subject to the availability of appropriated funds. ARPA-E anticipates making approximately 5-10 awards under FOAs DEFOA-0002240 and DE-FOA-0002241. ARPA-E may, at its discretion, issue one, multiple, or no awards. Individual awards may vary between $500,000 and $10 million.

Funding Type





Engineering and Physical Sciences

External Deadline

January 31, 2020