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Calculate the solar panel installation you need

When you decide to install solar panels, one of the crucial aspects is calculating how many solar panels you need. It's very important to make the very most of your rooftop so you can recover your initial investment as soon as possible, and maximise your monthly savings. Keep reading to find out how we calculate how many solar panels you need.


We do the calculations for you so you can make the most of your solar panels

At Holaluz we've got a clear goal: for you to pay €0 on your electricity bill, or as little as possible. Or even for you to have surplus savings. If that's the case for you, you can use that saving to reduce other bills, or get it paid into your bank account. Whatever you like!

Calculate the number of solar panels you need

Save more with Holaluz's solar panels

At Holaluz, we're all about the installation of distributed generation solar panels. Unlike traditional self-consumption, these installations allow a different calculation of the number of solar panels.

Installing solar panels with Holaluz

With distributed generation, you can reduce the whole electricity bill to €0, including the fixed costs and rates portion. That means you could take your electricity bill down to €0 or, in some cases, even earn money. As there is a legal limit, we calculate the optimal number of solar panels. We can install as many solar panels as your roof allows.

With self-consumption

There's a limit to the savings you can make on your energy bill. You'll still pay the fixed costs and rates portion of your bill. As there's that legal limit, they'll calculate a lesser amount of solar panels that will only cover that section of the bill.
Calculate now how many solar panels you require

Want to find out more about distributed generation?

This is what your bill will look like

Without solar panels

Installing solar panels with other companies

Installing solar panels with Holaluz

Variable part 60%

Fixed part 40%

Fixed part 40%

Extra savings

You can cut your bill down to 0€ and, if you have savings left, you also can:

Cut down other electricity bills

Have it paid into your account

Calculate how many solar panels I need

With every panel you save an extra €10 a month

It's simple: the more solar panels you have, the more energy you produce, the more leftover energy you have to sell and, in the end, the more you save. Basically, you get the very most out of your rooftop.

You Produce

We install more solar panels than any other company, so you can produce more energy. The more panels you have, the self-consumption surpluses you'll have to sell.

You sell

We'll buy all the energy you don't use. With no limits. That's how we can get your bill down to €0, or you can even start earning money.

You pass it on

Your extra energy reaches homes near you. We accelerate the change in the energy model, giving people access to local green energy.

Solar panel calculator

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If you prefer, call us. It's free.

900 67 01 70

from 9:00AM to 9:00PM, Monday to Friday

Frequently asked questions about calculating your solar panel installation
  • How much does a solar panel installation cost?

    Each solar panel installation is unique, so when we talk about the price of an installation we can't give a fixed price. That's why the first thing we suggest is to carry out a personalised study (at no extra cost or commitment, of course) of the characteristis of your rooftop and your needs so that we can calculate the number of solar panels you need and their exact price.

    Read more
  • How many solar panels should I calculate for the size of my house?

    Calculating the number of solar panels you need for your home is very important, both for a correct installation and for the right calculation of the number of panels you need. It will depend on this.

    Read more

Any doubts?