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Industries · Solar

Solar and energy funding consultant for companies across the EU

We match solar and energy technology companies in the EU with the renewable energy funding that fits each stage, from cell, inverter and storage R&D to manufacturing scale-up. We write the documentation and deal with the authorities.

What we fund

Funding from the lab bench to the production line

Solar and energy hardware moves from R&D through field validation to manufacturing scale-up, and solar funding splits along the same path: some programmes pay for the development team and test equipment, others for the factory. The right mix depends on your stage, where the company and the site are located, and whether you work alone or with partners.

Why this industry

Why solar and energy companies have more funding options than they use

Renewable energy grants and clean energy grants come from EU and national budgets, some for R&D and some for manufacturing. Most technology companies only check one side.

EU

Open to companies across the EU

EU-level funding needs no German entity. The EIC Accelerator and Horizon Europe accept companies established in an EU member state or an associated country, Eurostars accepts SMEs from its participating countries, and the EU Innovation Fund funds projects located in the EU, Norway, Iceland or Liechtenstein.

DE

Germany as an R&D and production base

A German company, or the German permanent establishment of a foreign one, can claim the Research Allowance. KMU-innovativ and ZIM ask for a permanent establishment or branch in Germany. GRW funds investment at a site in an eligible German region.

Lab to fab

R&D and manufacturing are funded separately

R&D programmes pay for development and validation. The EU Innovation Fund and GRW pay for manufacturing investment, and KfW innovation loans finance innovation projects through to implementation. Planning both early avoids a gap between the pilot line and the factory.

Seasons

Field validation takes time

Outdoor degradation tests and field pilots run across seasons before a design is proven. The Research Allowance is claimed per financial year once the year has ended, so a validation programme that runs for several years is claimed year by year, as long as each year's work meets the R&D criteria.

Eligible activities

Solar and energy R&D that funders typically support

Funders look for novelty and technical risk. Each programme then sets its own rules on stage, partners and which costs count.

Cell and module development

  • New cell architectures or material stacks beyond current industry-standard cells
  • Module design for higher yield, durability or new form factors
  • Encapsulation and interconnection development under reliability constraints

Typical routes: Research Allowance, Horizon Europe Cluster 5, EIC Accelerator; the EU Innovation Fund once manufacturing scales.

Power electronics and inverters

  • New inverter topologies and control algorithms
  • MPPT and grid-interaction methods under changing conditions
  • Thermal and efficiency engineering for new power stages

Typical routes: Research Allowance, Eurostars, KMU-innovativ where the design cuts energy use or emissions; ZIM once applications reopen.

Storage and system integration

  • Coupling PV with battery storage under real load and weather
  • Energy-management algorithms developed from the ground up
  • Hybrid-system control where no standard solution exists

Typical routes: Research Allowance, Horizon Europe Cluster 5, EIC Accelerator. Battery cell chemistry is covered under EV and battery funding.

Forecasting and monitoring software

  • Irradiance and yield forecasting models
  • Fault detection and performance analytics for fielded systems
  • Digital-twin or simulation methods validated against field data

Typical routes: Research Allowance, Eurostars, Horizon Europe Cluster 5. Model-heavy work is covered under AI and software funding.

What qualifies and what doesn't

Where each programme draws the line

R&D programmes and investment programmes judge the same solar or energy project differently, and each counts different costs.

Usually fundable

  • New cell, module or inverter designs developed and tested under technical uncertainty (Research Allowance, KMU-innovativ, Eurostars)
  • Storage, grid-integration or forecasting methods where no standard solution exists (Research Allowance, Eurostars)
  • Collaborative research and demonstration that matches a call topic on solar, storage or grids (Horizon Europe Cluster 5)
  • Factories making PV, solar thermal or storage components, from €2.5M of capex (EU Innovation Fund)
  • Productive investment in a new or expanded site in an eligible region (GRW)

Usually not fundable

  • Installing, commissioning or maintaining standard systems, and tests run only for certification or grid-code compliance (Research Allowance)
  • Routine yield monitoring and quality control with established tools (Research Allowance)
  • Depreciation on a pilot line that also runs production (Research Allowance)
  • PV systems that generate electricity at your own site (BAFA EEW, KfW innovation loans)
  • Work or investment started before the application, for BAFA EEW before approval (BAFA EEW, GRW, KfW innovation loans)
Rates and caps

What each type of funding pays

Each instrument pays in a different form. These are the official rates and caps, not a forecast for your project.

Tax credit
25% to 35%

Research Allowance: 25% of eligible R&D costs, 35% for SMEs, on R&D wages, contract research and depreciation of equipment used exclusively for R&D. Projects started from 2026 add a flat 20% on these costs for overheads and other operating costs. From 2026 up to €3M a year, €4.2M for SMEs. Paid out even when the company makes a loss.

R&D grants
Up to 100%

Horizon Europe: 100% for research actions, 70% for innovation actions, 100% for non-profits. EIC Accelerator: 70%, grant below €2.5M. KMU-innovativ: usually 50% for companies, plus a bonus for SMEs. Eurostars: set by each country's funding body. EXIST: stipends for founders. ZIM: applications currently paused.

Manufacturing and investment funding
By call, region and size

EU Innovation Fund: up to 60% of relevant costs, by default the investment plus ten years of operating costs, minus revenues; manufacturing projects from €2.5M of capex. GRW: ceilings by region and company size, and each Land sets the actual rate. KfW innovation loans: up to €25M per project. EIC Accelerator equity: €1M to €10M. BAFA EEW: 10% to 60% by module and company size.

Rates, caps and thresholds from the official programme rules and the latest calls, checked October 2026. The actual amount depends on eligible or relevant costs, company size, location and the funder's decision.

Your route

Which route fits your company

Location, stage and whether you are scaling manufacturing decide the shortlist before the technology does.

EU company without a German entity

The EIC Accelerator for energy startup funding towards scale-up, Eurostars through your national funding body, Horizon Europe consortia under Cluster 5, and the EU Innovation Fund for projects in the EU, Norway, Iceland or Liechtenstein.

EU company with a German subsidiary or permanent establishment

Adds the Research Allowance. KMU-innovativ and ZIM follow their own branch rules, and rates depend on whether you count as an SME or a large company.

Founders at a German university or research institute

EXIST, applied for through the institution, then the routes above once the company exists. More on startup funding.

Scaling manufacturing of cells, modules, inverters or storage

Solar manufacturing funding comes from the EU Innovation Fund for factories that meet the latest call's topic and thresholds, open to large companies as much as to SMEs. At a German site, GRW funds investment in eligible regions and KfW innovation loans finance innovation projects, each applied for before you start.

Programmes that fit

Programmes we recommend for solar and energy companies

Most solar and energy clients move through several programmes between first prototype and production, and the shortlist depends on stage and location.

Open to companies across the EU For companies with a base or site in Germany

Battery cell chemistry, EV charging and hydrogen have their own pages: EV and battery funding and cleantech funding. Production equipment in general is covered under manufacturing funding.

How each programme works in detail is explained in our guides: Horizon Europe, Eurostars, EIC Accelerator, EU Innovation Fund, Research Allowance, KMU-innovativ, ZIM (currently paused), GRW, BAFA EEW, KfW innovation loans, WIPANO and EXIST.

Compare all programmes
FAQ

Solar and energy funding, answered

Yes, we work with solar and energy technology companies across the EU. Without a German entity, the main routes are the EIC Accelerator and Horizon Europe, open to companies established in an EU member state or an associated country, Eurostars, in which every EU member state takes part, and the EU Innovation Fund for projects located in the EU, Norway, Iceland or Liechtenstein. German programmes need a German company, permanent establishment, branch or site, depending on the programme.

The EIC Accelerator, Eurostars and Horizon Europe Cluster 5, each for a different setup. The EIC Accelerator funds a single startup or SME with a breakthrough technology: a grant below €2.5M for development from TRL 6 to 8, plus optional equity of €1M to €10M. Eurostars funds an SME-led R&D project with partners from at least two countries. Cluster 5 funds consortia on set solar, storage and grid topics. Combining them works for different stages, projects or cost items, never for the same costs twice.

Yes, if it is taxable in Germany, typically through a German subsidiary or a permanent establishment. Eligibility follows German tax liability, and the tax authorities treat a foreign company with a German permanent establishment as eligible where Germany has the right to tax. The allowance is 25% of eligible R&D costs, 35% for SMEs, credited against German tax. Contract research counts only if the contractor is managed in the EU, or in an EEA state that provides administrative assistance in tax matters.

Yes, if the factory fits the current call. In the latest call, the clean-tech manufacturing topic covered facilities producing components for photovoltaics, solar thermal and energy storage, from €2.5M of capex, at up to 60% of relevant costs. Inverters are not named, so an inverter maker has to show that its product is a component of those systems. The fund pays for the plant, not the R&D before it, and topics change with each call. More on the EU Innovation Fund.

Yes, if the project fits the field Energieeffizienz, Klimaschutz und Klimaanpassung. It funds risky R&D by SMEs on technologies that raise energy efficiency or cut greenhouse gas emissions, alone or with research partners, and the climate effect has to be described and, where possible, quantified. You need a permanent establishment or branch in Germany when the grant is paid. Companies usually receive 50% of their costs, SMEs more, and the application starts with a project outline.

It depends on the programme. Under the Research Allowance, testing a prototype, including validation under conditions that represent real use, is R&D until the test phase ends. Installation and commissioning to the manufacturer's instructions, tests run only for certification or standards, and routine checks are not. Horizon Europe innovation actions can fund piloting and demonstration, the EIC Accelerator grant covers development from TRL 6 to 8, and the EU Innovation Fund has a topic for pilots.

Under the Research Allowance, yes, if it meets three conditions. Depreciation on movable assets such as deposition tools, test rigs, climate chambers and measurement equipment counts if they were acquired or produced after 27 March 2024, are used exclusively in the R&D project and are necessary for it. A pilot line that also runs production fails the exclusivity test. Low-value assets written off immediately do not count, nor do software and licences. Grant programmes apply their own cost rules to equipment.

Yes, several programmes are built for that stage. The Research Allowance is paid out even when a company makes a loss: whatever exceeds your tax bill is refunded once the tax office has set it after the financial year. That suits long validation phases, where costs come years before revenue. The EIC Accelerator accepts startups, and even founders who will set up the company before the grant agreement is signed. Founders still at a German university or research institute can start with EXIST.

Yes, and for some programmes it helps. Under the Research Allowance, contract research counts at 70% of the fee for contracts placed after 27 March 2024 (60% before), if the contractor is managed in the EU, or in an EEA state that provides administrative assistance in tax matters. KMU-innovativ funds joint projects in which universities and research institutes can receive up to 100% of their costs. Under the German Eurostars rules, universities and institutes are funded only when a German SME carries a substantial share of the R&D work.

Only in narrow cases, mainly through GRW. The programmes on this page fund technology development and manufacturing, not buying standard PV or battery systems. Under the 2026 GRW framework, a site in an eligible German region can get investment aid for renewable generation that mainly covers its own energy use, together with battery storage that is part of the same project. BAFA EEW does not fund PV power generation; it funds solar thermal for process heat and, under strict conditions, electricity storage.

For the Research Allowance our fee is purely success-based: 10% of the funding up to €500k per year and 5% above that, due only after payout. For all other programmes the fee is a fixed share plus a success component, both agreed in advance. The first eligibility check is free and comes with no obligation.

Talk to us

Ask us anything

Tell us about your project, wherever in the EU it is based, and we'll assess your case by hand. No prep, no obligation. Prefer to talk?

Not sure you qualify?Fee agreed upfront6–12h of your time