Photovoltaic solar panels for your home

The solar tax was a toll that some self-supply installations had to pay from 2015. But in 2018 it was revoked and nobody had to pay that tax. Using your own energy is your right, and the European Union has safeguarded that right.

Good question! We are called SUD («south») because facing the panels towards the South maximizes the photovoltaic production, at least in the Northern hemisphere. But maximizing does not mean optimizing. If you have roof decks with different inclinations, we may install panels on all of them so some orientations will receive more light in the morning and others in the afternoon. And with panels that are more efficient every day, they can absorb the sunlight even if they are not facing the sun perpendicularly.

Yes, you can! Thanks to intelligent meters, your distributor will know how much energy you have poured into the network. For example, while you are working, or on holiday. In this case, for small installations (under 100kWn, that is, 99% of home installations), your distributor will compensate you in the next bill, so you don’t need to register as a producer. They will pay your kWh at a pool wholesale price, which is under the price you pay for them as the distributor has to carry that energy to the consumer. That is what we call the «economic balance», different from the «energy balance». In this case, the kWh are directly compensated, independent of the price. It is a monthly compensation, but it is limited to a 0 consumption in your electricity bill (you will not receive money). If you want a bigger installation because you have a big roof and you want to make the most of it, we advise you to register as a producer.

Yes, indeed! There are two types of panels: thermal and electric panels. The thermal panels transform the solar energy into heat and carry that heat to a central system, to heat water. The electric panels generate electricity. The first ones were very trendy some years ago, but their maintenance is complicated (meters and meters of pipes) and are limited to hot water. And that is why from SUD, although we also install thermal panels, we always advise to install electric panels: because their technology is more efficient and innovative, which makes maintenance very simple (the manufacturers offer a 25-year guarantee) and also because once you have generated electricity, the uses are limitless. You can even heat water!

Not at all: its mission is to be up there for 25 years, so don’t worry. The equipment is installed by professionals so you don’t need to do anything: the rain will clear the dust of the gaps and if it hails, keep calm, we can monitor your installation thanks to a communication card: if the installation stops working, our information system will warn us.

Yes, thanks to the inverter. You can see what you generate at any time, or at the end of the day, week or month. You’ll have a login and a password to keep your information confidential.

Absolutely not! Self-supply is 100% legal, and the Administration encourages and promotes it, as it’s one of the main pillars against global warming. Nobody will deprive you of the network electricity at night. However, if you want to be self-sufficient and get rid of your electricity bill, you should have batteries. We have made some of these installations, called «isolated», especially in natural landscapes.

The leading country is Germany. Besides having countless photovoltaic plants (whose energy is sold to the network), hundreds of thousands of homes have solar panels on their roofs for self-supply. And Germany doesn’t get as much direct sunlight as Spain. We should definitely take Germany’s lead!