{"id":5346,"date":"2026-09-22T09:28:32","date_gmt":"2026-09-22T07:28:32","guid":{"rendered":"https:\/\/solquality.es\/how-many-years-does-it-take-for-solar-panels-to-pay-for-themselves-real-returns\/"},"modified":"2026-10-13T13:58:42","modified_gmt":"2026-10-13T11:58:42","slug":"how-many-years-solar-panels-pay-for-themselves","status":"publish","type":"post","link":"https:\/\/solquality.es\/en\/how-many-years-solar-panels-pay-for-themselves\/","title":{"rendered":"How many years does it take for solar panels to pay for themselves? Real returns"},"content":{"rendered":"

A solar panel installation in M\u00e1laga or Murcia pays for itself in 4-7 years.<\/strong> With the income tax (IRPF) deduction, the period gets closer to 4-5 years. From then on, and for the 25 years or more that the installation lasts, the electricity it produces is free.<\/p>\n

The annual return ranges between 13% and 20%<\/strong>. No bank deposit offers that. We explain how to do the calculation with your own bill and which factors change the result.<\/p>\n

What paying off solar panels means<\/h2>\n

Paying off the panels means recovering what you paid for the installation through what you no longer pay on your electricity bill. When the accumulated savings equal the price of the installation, the panels have paid for themselves.<\/p>\n

To calculate it you need three figures:<\/p>\n

    \n
  1. What the installation costs<\/strong> (after deducting grants).<\/li>\n
  2. What you save each year<\/strong> on your bill.<\/li>\n
  3. Divide<\/strong> the first by the second.<\/li>\n<\/ol>\n

    How much an installation costs in 2026<\/h2>\n

    A residential installation in Spain costs between \u20ac4,000 and \u20ac9,500<\/strong> in 2026. The price depends on the power, whether it includes a battery and the quality of the equipment.<\/p>\n\n\n\n\n\n\n\n\n
    Installation<\/th>\nApproximate price<\/th>\n<\/tr>\n<\/thead>\n
    3 kWp (6-7 panels), no battery<\/td>\n\u20ac4,500-5,500<\/td>\n<\/tr>\n
    4.5 kWp (9-10 panels), no battery<\/td>\n\u20ac6,000-7,500<\/td>\n<\/tr>\n
    4.5 kWp with a 5 kWh battery<\/td>\n\u20ac8,500-9,500<\/td>\n<\/tr>\n
    6 kWp (13 panels), no battery<\/td>\n\u20ac7,500-9,000<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Approximate prices including VAT, for quality installations in detached homes. If you don’t know what power you need, see our guide on how many solar panels you need<\/a>.<\/em><\/p>\n

    How much you save each year<\/h2>\n

    The savings have two parts:<\/p>\n

    1. The electricity you no longer buy.<\/strong> Every kWh you use from your panels is a kWh you don’t pay the utility company for. In 2026, that kWh costs between \u20ac0.20 and \u20ac0.30 depending on the time of day and the tariff you have<\/a>.<\/p>\n

    2. The surplus you sell.<\/strong> What you produce and don’t use goes to the grid and is deducted from your bill. It is paid at a low rate, between \u20ac0.03 and \u20ac0.10 per kWh, and at midday it can drop to zero. That is why what matters most is using electricity when it is produced<\/strong>.<\/p>\n

    In a typical home without a battery, between 35% and 50% of what the panels produce is used directly. If you work from home, have air conditioning<\/a> or schedule the washing machine and water heater for midday, that percentage goes up.<\/p>\n

    Real example: a home on the Costa del Sol with 4.5 kWp<\/h2>\n

    A family of 4 that uses 4,500 kWh a year. They install 4.5 kWp (10 panels) without a battery for \u20ac7,000<\/strong>.<\/p>\n\n\n\n\n\n\n\n\n
    Item<\/th>\nCalculation<\/th>\nResult<\/th>\n<\/tr>\n<\/thead>\n
    Annual production<\/td>\n4.5 kWp \u00d7 1,650 kWh\/kWp<\/td>\n7,400 kWh<\/td>\n<\/tr>\n
    Electricity used from the panels (45%)<\/td>\n3,300 kWh \u00d7 \u20ac0.22<\/td>\n\u20ac726<\/td>\n<\/tr>\n
    Surplus sold<\/td>\n4,100 kWh \u00d7 \u20ac0.06<\/td>\n\u20ac246<\/td>\n<\/tr>\n
    Annual savings<\/strong><\/td>\n<\/td>\nabout \u20ac970<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Now we divide:<\/p>\n