Alquilar or Buying a Batería doméstica? The Honest Comparison

Alquilar or buying: the core question

The batería doméstica market is growing rapidly and an increasing number of companies offer alquiler schemes. It sounds appealing: no high upfront costs, monthly instalments and sometimes including installation and mantenimiento. But is alquilar actually more cost-effective? Or do you end up paying more in the long run than if you buy outright?

In this article, we compare both options honestly and transparently. We calculate with current 2026 prices, look at total costs over 10 and 15 years, and help you determine which option best suits your situation.

How does alquilar a batería doméstica work?

With a alquiler scheme, you pay a fixed monthly fee (typically between €50 and €120) for the use of a batería doméstica. The battery remains the property of the alquiler company. Most alquiler contracts have a term of 10 to 15 years. What is typically included?

• The battery itself: including installation and connection to your system
• Mantenimiento and repairs: defects are resolved by the alquiler company
• Monitoring: some providers offer an app for insight
• Seguro: included in some contracts

Total costs compared: alquilar vs buying

Let us put the figures in order for a popular 5 kWh batería doméstica (comparable to the Anker SOLIX Solarbank 2 Pro):

The difference is substantial: over 10 years, alquilar costs nearly 7x more than buying. And after those 10 years, with alquilar you still do not own the battery. With a purchase, after the payback period (4-6 years) you have pure profit.

When can alquilar still make sense?

Despite the higher total costs, there are situations in which alquilar can be a sensible choice:

You have no savings available

If you cannot pay the purchase amount in one go and do not want to take out a loan, alquilar offers a low-threshold entry point. You start saving immediately and pay in instalments. Note, however: the total costs are higher.

You are living at your current address temporarily

Are you planning to move within 3-5 years? Then alquilar can be more flexible. With some contracts, you can take the battery with you or transfer the contract. With a purchased fixed system, relocation is more difficult (and sometimes not possible).

Why buying is almost always more cost-effective

For most homeowners, buying is the better option. These are the key reasons:

• Much lower total costs: 5-7x cheaper over the battery's vida útil
• Ownership: the battery is yours, including residual value after 15+ years
• No contractual obligations: no monthly instalments, cancellation fees or fine print
• Plug & play: many models (such as the Anker SOLIX Solarbank range) can be self-installed in 1-2 hours, so no costes de instalación either

The HES recommendation

At Home Energy Solutions, we almost always advise buying. The reason is simple: the savings are greater, you own the battery, and current battery prices are so competitive that the payback period is shorter than ever.

Conclusion

Alquilar offers a low-threshold entry point, but is significantly more expensive in the long run. Buying is the smartest choice for most hogares: lower total costs, ownership, and a faster payback period. With the competitive battery prices of 2026 and the plug-and-play installation of brands such as Anker SOLIX, the barrier to buying is lower than ever.

Want to know which batería doméstica suits you best? Request free advice or browse our complete range.