iDEX Prime Re Open

The iDEX Prime Re-Open program is a significant defence innovation challenge, spearheaded by the Defence Innovation Organisation (DIO) under the Ministry of Defence. Operating within the Innovations for Defence Excellence (iDEX) framework, this initiative aims to foster the development of mission-critical defence technologies through collaboration with various innovators. This re-launched phase specifically focuses on two advanced problem statements issued by the Indian Air Force (IAF). Organizations like MSMEs, startups, and individual innovators are encouraged to participate. This program is crucial for strengthening India's indigenous defence capabilities by supporting high-value, deep-tech solutions that align with national security priorities. It enables the development of strategic technologies with substantial operational impact.

The first challenge seeks the development of a UAS-based Electronic Support Measures (ESM) system designed for Signal Intelligence (SIGINT) operations, particularly in challenging hilly and high-altitude terrains. The system is expected to integrate tethered drones mounted on vehicle platforms, advanced ELINT payloads, and secure encrypted SATCOM for data transmission. Key requirements include real-time localization of adversary electronic warfare emitters and operational capability up to 4 km Above Mean Sea Level (AMSL). The ultimate goal is a fully integrated vehicle-based SIGINT system that enhances electronic warfare capabilities in near real-time scenarios.

The second challenge under iDEX Prime Re-Open focuses on creating an inflatable or modular all-weather sun shelter for fighter aircraft and helicopters. The proposed solution must be rapidly deployable, modular, and easily transportable across difficult terrains. It needs to be highly resistant to harsh weather conditions, fire-retardant, and thermally insulated, with integrated HVAC systems. Additionally, the shelter should incorporate features to minimize exposure to enemy satellite-based surveillance. It must support operations up to 4.5 km AMSL and be scalable to accommodate larger aircraft classes.

• Grant funding available up to ₹10 crore.
• Focus on deep-tech defence solutions for the Indian Air Force.
• Open to startups, MSMEs, and individual innovators.
• Addresses two specific IAF challenges: UAS-based ESM and all-weather aircraft shelters.
• Funding is non-dilutive (no equity taken).
• Aims to strengthen India's defence innovation ecosystem.

This program is open to MSMEs, startups, and individual innovators who are developing advanced solutions for critical defence technology challenges. Applicants must be prepared to address specific problem statements issued by the Indian Air Force, focusing on deep-tech innovation with significant operational impact.

iDEX Prime Re Open is open to startups at any stage. It is open to startups registered anywhere in India.

The most recent application window for iDEX Prime Re Open closed on 9 Mar 2026. Many programmes run repeat cohorts, so it is worth checking the official site for the next round.

Selected innovators under iDEX Prime Re-Open receive grant support of up to ₹10 crore. This funding is provided to facilitate the development and demonstration of advanced prototype systems. As a grant, this support is non-dilutive, meaning no equity stake is taken from the recipient's venture. The funding aims to enable the creation of mission-critical defence technologies aligned with the operational requirements of the Indian Air Force.

iDEX Prime Re Open is offered by Defence Innovation Organisation, a government body. As a government-backed competition, it is publicly funded and open to eligible startups across India. You can verify current details and timelines on the provider's official website before applying.

The selection process for iDEX Prime Re-Open involves a structured evaluation of submitted proposals.

Applicants are required to submit their detailed proposals through the official iDEX portal, specifically under the iDEX Prime Re-Open category. Each proposal must comprehensively outline the technical architecture of the proposed solution, its feasibility, a clear deployment plan, and demonstrate strong alignment with the specific challenge requirements set forth by the Indian Air Force.

Following submission, applications undergo a rigorous screening process and technical evaluation conducted by iDEX and relevant defence stakeholders to identify the most promising and impactful innovations.

Before you apply to iDEX Prime Re Open, keep the following documents ready:

• A pitch deck or short business plan describing the problem, product and traction
• Company registration documents and PAN
• Founder identification (PAN / Aadhaar) and brief profiles
• Recent financial statements or projections
• Product details — a demo, prototype or working link if available

Exact requirements are confirmed on the official application portal — treat this as a preparation checklist.

iDEX Prime Re Open is best suited for startups in India seeking non-dilutive funding of ₹10Cr. If that describes your startup, review the eligibility criteria above before applying.