Domestic consumption is the ability to generate electricity from renewable sources by means of a photovoltaic system (energy obtained directly from solar radiation) and consume it directly in the home. The most important components that make up the installation are:
- Photovoltaic module
- Grid connection inverter
Photovoltaic solar modules are responsible for turning sunlight into electricity. The electricity produced is direct current (DC) which is dificult to use, since the devices that work in a home use alternating current (AC). For that reason, an Inverter , that it transforms this DC current alternates to be able to consume it in the House. / photovoltaic modules produce electricity according to the orientation and tilt. In addition, depending on the installation location will be more or less production due to solar radiation of the place. As for the energy production/consumption, there are 3 possibilities:
- Housing needs more energy than it produces, and uses part of the electricity networks.
- The home generates more energy than it needs at that moment, and dumps this excess energy in the electrical network. To avoid this dumping, since no economic compensation is perceived in such facilities, you can install an anti-dumping system, which modulates the production of inverter depending on the energy needed.
- The home generates more energy than it needs at that moment, and this is stored in batteries for use later, when needed. The only difference between the system of instant consumption described so far and the system of consumption with storage is the installation of storage batteries and a battery manager in the latter. The battery manager removes the stored energy and discharges it into the internal network, therefore avoiding having to buy energy from the electrical network.
Finally, the entire installation will be monitored so that, at any time, you can see the amount of energy that is being produced and what the house needs, how much is being saved in the home electrical consumption, etc.
Author: Department self-consumption.