Subsidies and Tax Deductions for Solar Installations in 2026

In Spain, during 2026, there are several ways to save money when installing solar panels and batteries, through both tax deductions and direct subsidies.

          Income Tax Deduction (IRPF)

You can deduct part of the cost of installing solar panels and batteries on your income tax declaration, as long as certain conditions are met.

     How it works

Deductible percentage: Between 20 % and 60 % of the installation cost. Depending on the energy efficiency of your home:

• Minor improvements → 20 – 30 %
• Significant efficiency improvements → 50 – 60 %

     Eligible installations

• Photovoltaic solar panels for self-consumption
• Battery storage systems

     Main requirements

• The installation must be done in your primary residence
• Must be installed by a certified company
• Keep invoices and proof of payment
• An energy efficiency certificate before and after the installation is required

      How to apply

• Include the eligible costs in your income tax declaration as a deduction for home energy rehabilitation
• If you are unsure how to do it, a tax advisor or management office can assist you

          How it works in practice

• Receive the quote and pay for the installation in full
• Payment is made to the installer according to your agreement (can be in installments).
• Keep invoices and proof of payment, essential for both tax deduction and subsidy.

     Apply for the subsidy (Plan Hogar Solar 2026)

• Submit your application with invoices and required documentation.
• The subsidy covers a percentage of the cost (e.g., 20 – 35 %) and is reimbursed after approval.
• It is important not to start the installation before applying if you want it to be eligible.

     Apply the IRPF deduction

• When filing your income tax return, include the certified expenses.
• The deduction reduces your taxes owed or increases your refund.
• You can combine the subsidy + tax deduction, maximizing your total savings.

In summary: you pay for the installation first, then receive the subsidy if eligible, and finally apply the tax deduction on your income tax return.

          Plan Hogar Solar 2026

• A new state program focused on private homes, available in 2026
• Offers support for photovoltaic self-consumption installations and battery storage.
• The program is processed through the Andalusian Government or the IDAE.
• Requires compliance with the technical and administrative requirements listed above (certified company, invoices, etc.).