What are the subsidies and incentives for photovoltaic panels in 2025?

The year 2025 brings changes for grants and subsidies for photovoltaic panels in Belgium. This comprehensive guide details the new regulations, eligibility criteria and practical advice for maximizing your financial benefits. Individuals and companies, prepare your energy transition with the support available.

Guide to 2025 aid in Wallonia

In 2025, the landscape of subsidies and incentives for photovoltaic panels in Belgium is undergoing significant change, particularly in Wallonia. While direct incentives have disappeared, alternative financing solutions and tax incentives are being introduced to encourage investment in solar energy.

Aides et subsides Wallonie sur vos panneaux solaires : Quelles options en 2025 ?

New regulations for photovoltaic panels 2025

In Wallonia, a number of direct support schemes, such as the “prime de compensation du tarif prosumer” and the “prime pour l’installation d’un compteur double flux”, have been abolished since January 1, 2024. The“reverse meter” principle no longer applies to new photovoltaic installations. However, installations completed before this date continue to benefit from compensation until 2030, under certain conditions (eg. maintenance of net developable power). The resale of surplus production is possible via a smart meter, but this this compensation.

What aid is available in Wallonia in 2025?

There are no longer any loans, subsidies or bonuses as such for installing photovoltaic panels on your roof or flat land. However, the new regulations do provide other forms of support for your solar panels:

For private customers

1. 6% VAT rate if your house is more than 10 years old

The VAT rate has been set at 6% on your photovoltaic project to help you with your energy transition. This benefit applies if your house is more than 10 years old.

2. 0% loan

Installing photovoltaic panels is a profitable long-term investment. The Rénoprêt à taux zéro, offered by Société Wallonne du Crédit Social (SWCS), is an attractive financing option for energy renovation projects, including the installation of photovoltaic panels. The loan can be up to €60,000.

3. Self-consumption = drastic reduction in your bill

It’s not a bonus or a subsidy, but a real financial impact on your energy bill: self-consumption (or the fact of consuming l’energy produced). By programming your electrical appliances to consume the energy produced during the day, you become autonomous (depending on the system you choose and install) and consume less electricity from the grid. The direct consequence is a much lower energy bill.

For professionals

1. Easy’Green loans

Transform your business with the help of Novallia and Easy’Green! The Walloon government supports the energy transition of SMEs by offering flexible financing solutions (loans and capital) to improve energy efficiency, integrate renewable energies and develop eco-innovative projects. Novallia guides you every step of the way, from assessing your return on investment to identifying financial aid and technological partners. Easy’Green facilitates access to financing for your most ambitious projects, taking into account their innovative potential, environmental impact and commercial viability.

For which professional investment should you apply for an Easy’Green loan?
  • Improving the energy efficiency of buildings (renovation, extension or new construction) or processes: insulation work, window frames, heating, LED lighting, heat pumps, rainwater tanks, wastewater treatment plants, etc.
  • Process improvement: replacement or new, more efficient equipment, optimization, etc.
  • Installation of renewable energy: photovoltaic panels, biomass, wind power, biomethanization, etc.
  • Charging station
  • Storage battery
  • Refrigeration system to reduce the use of fluorinated gases
  • Eco-innovation projects, including circular economy projects
How and where to apply for financing?

You can make your request on the official 1890 website via this link.

2. Investment allowance

The investment allowance is a tax benefit that enables companies to reduce their tax base, and therefore the amount of tax they pay. Unlike deductible expenses (which relate to current expenditure), the investment allowance applies to expenditure on projects that improve or develop your business over the long term. For example, purchasing new machinery, renovating your premises, or investing in green technologies.

These investments, whose value gradually diminishes over time (depreciation), are eligible for an additional tax deduction. A real bonus for your company!

New deduction increased by 40% as of January 1, 2025

Investments linked in the production of renewable energy, including investment in photovoltaic panels, entitles you to an increased deduction of 40%.

4 conditions to benefit from this tax incentive:
  1. The investment must be depreciable over a minimum period of 3 years
  2. It must be allocated solely to exercise your professional activity
  3. It must not be excluded from the list drawn up (which is not the case for renewable energies). :
  4. Your company must be financially sound, with no losses for the past 2 years.

When can you benefit from this aid for your photovoltaic system?

The investment allowance is deducted from profits for the year in which the investment was made. The balance of the deduction may be carried forward to the following year if available profits are insufficient.

What are the steps and formalities involved?

When installing solar panels for your business, you qualify for the increased deduction of 40% and must :

  1. Attach form 275U/276U to your tax return
  2. Provide a certificate (to be obtained from your chartered accountant) confirming the eligibility of your investment.

3. Tax credit

An alternative for your company is to apply for a tax credit, which allows you to recover part of your R&D expenditure in the form of a tax credit. If your company is subject to the reduced corporate tax rate (20%), the R&D tax credit may be more attractive, as it is calculated on the standard tax rate (25%).

In general, the greater your profits, the more advantageous the R&D tax credit.

A concrete, quantified example for your company

Let’s imagine a company with a profit of 80,000 euros, business expenses of 18,000 euros and a technological investment of 5,000 euros.

  • With the technology investment allowance, the tax payable would be 12,195 euros.
  • With the R&D tax credit, the tax payable would be 11,764.5 euros, a saving of 430.5 euros!

In conclusion, which grants and subsidies should you look for to install photovoltaic panels in Wallonia in 2025?

In short, although the context for grants and incentives for photovoltaic panels has changed, the opportunities for investing in clean, renewable energy remain numerous in 2025. To take full advantage of the support available and the economic and environmental benefits offered by this technology, we strongly advise you to stay informed and enlist the help of specialists like Vectura.

This page is based on official and authentic sources.

This page was written on the basis of the official source of the Belgian government via :