The Innovation Fund 2025 Net-Zero Technologies call (INNOVFUND-2025-NZT) is the biggest single EU grant opportunity of the year — €2.9 billion for projects that demonstrate innovative low-carbon technologies. The call opened in December 2025 and the submission deadline is April 23, 2026. It's funded from EU Emissions Trading System revenues, and it's open to applicants from any country, as long as the project is in the EU or EEA.

This guide explains how to navigate the application, from choosing the right topic to surviving the cascade evaluation.

Key Numbers

  • €2.9 billion total budget across five topics
  • 60% funding rate (of "relevant costs" — more on this below)
  • €2.5M minimum capital expenditure per project
  • April 23, 2026 submission deadline (17:00 Brussels time)
  • Single applicants and consortia both eligible — no minimum consortium size

The Five Topics

General Large-Scale (LSP) — €1.2B

For projects with capital costs above €100M. Industrial decarbonisation, renewables, carbon capture at major scale.

General Medium-Scale (MSP) — €300M

Same sectors as LSP, but capital costs €20M–€100M.

General Small-Scale (SSP) — €100M

Capital costs €2.5M–€20M. Simplified application process.

Clean-Tech Manufacturing — €1B

Manufacturing of clean-tech components and equipment: electrolyser stacks, battery cells, PV modules, wind components, heat pumps. Capital costs above €2.5M with no upper limit.

Pilots — €300M

Breakthrough technology pilots at pre-commercial scale. Maximum grant €40M per project. Shorter operating period (3 years vs. 5). Higher risk tolerance if innovation level is genuinely breakthrough.

Who Can Apply?

Eligibility is broad. Legal entities from any country — public or private — can apply. Single companies, consortia, joint ventures. There's no minimum consortium size.

But the project must be in the EU/EEA. The applicant can be headquartered anywhere, but the project activities must take place in an EU Member State or EEA country (Norway, Iceland, Liechtenstein). For maritime projects, ships must fly EU/EEA flags or call EU/EEA ports regularly.

Not eligible: EU bodies (except the Joint Research Centre), natural persons, and entities subject to EU restrictive measures.

Understanding "Relevant Costs"

This is the single most important concept in the Innovation Fund and the one applicants most commonly misunderstand.

The Innovation Fund doesn't fund 60% of your total project cost. It funds 60% of the additional cost to decarbonise compared to a conventional alternative.

The formula:

Relevant costs = (Your low-carbon project cost) – (Conventional reference technology cost)

Your grant = 60% of this difference.

Example: A project costs €100M total. The conventional alternative would cost €70M. Your relevant costs are €30M, and your maximum grant is €18M — not €60M.

There are two ways to calculate this:

  1. Direct comparison — compare your technology's full lifecycle costs vs. a conventional benchmark. Better when there's a clear, established alternative (e.g., replacing a fossil fuel plant with renewables).

  2. Reference plant method — model a hypothetical conventional plant with the same output. Requires extensive documentation: board approvals, market studies, supplier quotes proving this would genuinely be your alternative.

Getting the relevant costs calculation wrong is one of the fastest ways to get rejected.

The Cascade Evaluation

The Innovation Fund uses a cascade evaluation — if you fail any minimum threshold, evaluation stops and the remaining criteria are never scored. This is unlike most EU grants where all criteria are scored regardless.

Stage 1: Degree of Innovation (threshold: 9/15)

This is the first gate. Roughly 20–30% of applications are rejected here. Your project must go beyond incremental improvement — evaluators are looking for intermediate to breakthrough innovation.

Critical: Check the Innovation Fund project portfolio before applying. If your project looks similar to one already funded, you must explicitly explain what's different.

Stage 2: Project Maturity (cascading sub-thresholds)

Three sub-criteria, each with a 3/5 minimum:

  • Technical maturity — feasibility demonstrated, risks identified with mitigation plans
  • Financial maturity — credible path to financial close within 4 years, detailed financial model, evidence of debt/equity engagement
  • Operational maturity — permits strategy, management track record, IP/licensing plan

Plus GHG calculation quality (also 3/5 threshold):

  • Process emissions must be below EU ETS benchmark
  • Minimum 50% relative GHG avoidance (75% for Pilots)
  • Must comply with EU Taxonomy "Do No Significant Harm"

Failing any single sub-criterion here ends evaluation.

Stage 3: Cost Efficiency (hard ceiling)

Your cost efficiency ratio = grant requested ÷ absolute GHG avoided (tonnes CO2-eq over 10 years).

  • Above €200/t CO2-eq → automatic rejection (€2,000/t for Pilots)
  • At €100/t you score 6/12 points; at €50/t or below, full marks

Replicability & EU Industrial Leadership

No cascade threshold, but a minimum 4/10 on European industrial leadership. You need to demonstrate EU supply chain integration, IP retention in Europe, and skills transfer. Projects overly dependent on non-EU suppliers (especially for critical components like batteries or magnets) score poorly here.

Bonus Points

Up to 3 extra points available:

  • Net carbon removals — your project can achieve net-negative emissions (+1)
  • SME-led — all coordinating entities are SMEs (+1)
  • Maritime decarbonisation — maritime sector with demonstrated impact (+1)

Financial Close: The 4-Year Clock

After grant award, you have 4 years to reach financial close — defined as the moment when all project and financing agreements have been signed AND all conditions in them have been met. This is stricter than most applicants expect.

Grant disbursement is split:

  • Up to 40% disbursed pre-financial close, based on early milestones (permitting, engineering, commercial contracts)
  • At least 60% disbursed post-financial close, linked to actually achieving 75% of your targeted GHG avoidance
  • If you hit only 60% of your GHG target, you get only 60% of the post-close grant

Timeline

Date Event
December 4, 2025 Call opened
April 2, 2026 Last date to engage consultants
April 23, 2026 Submission deadline (17:00 Brussels)
~October 2026 Evaluation results
~Q1 2027 Grant agreement signature

8 Tips for a Stronger Application

  1. Nail the innovation narrative first. Stage 1 is the biggest filter. Don't assume your innovation is obvious — articulate exactly what goes beyond the state of the art, and how it differs from already-funded Innovation Fund projects.

  2. Get the GHG calculation right. Use the mandatory GHG calculator template. Test your numbers against the EU ETS benchmark before submission. If your process emissions are above the benchmark, reconsider your project scope.

  3. Watch the cost efficiency ratio. If you're trending toward €200/t CO2-eq, either reduce your grant request, increase credible GHG avoidance, or reconsider the project economics. Above €200/t is automatic rejection.

  4. Build a financial model evaluators can trust. Dynamic formulas (not hardcoded numbers), 10-year cash flow projections, sensitivity analysis, and preliminary term sheets from lenders. The evaluators are financial experts.

  5. Show your permits strategy. Operational maturity cascades at 3/5. Include evidence you've engaged with permitting authorities. Detail your regulatory timeline with realistic buffers.

  6. Tell the EU supply chain story. The 4/10 European industrial leadership threshold is real. Map your supply chain, identify EU-based sourcing, and show how you're reducing critical dependencies.

  7. Plan for financial close. If you can credibly reach close within 2 years (not 4), say so — it earns bonus consideration for Clean-Tech Manufacturing and Pilots.

  8. Respect the page limits. Part B has a 70-page maximum. Pages beyond that are ignored by evaluators. Quality over quantity.

Should You Apply?

This grant fits if you:

  • Have a demonstrably innovative low-carbon technology ready for commercial-scale deployment
  • Are planning a project in the EU/EEA with at least €2.5M in capital expenditure
  • Can achieve at least 50% GHG emissions reduction vs. the conventional alternative
  • Have a credible path to financial close within 4 years
  • Can demonstrate the project makes economic sense beyond the grant period

It's not a fit if your technology is purely research-stage, your GHG case is marginal, or you can't articulate a clear cost efficiency argument.

Working on an Innovation Fund application? We provide eligibility assessments, GHG methodology support, and full application partnerships. Book a call or visit our Innovation Fund grant page for details.