ON Grid systems are those photovoltaic generators that inject the energy produced into S.E.N.(National Energy System) . Generally these are of two kinds:

1. Photovoltaic systems for domestic use.
2. Industrial photovoltaic systems.

     Ambele categorii au la bază două tipuri de echipamente principale:
panou fotovoltaice și invertoare.

The installation place is of two kinds: roof or directly on the ground.

Installation on the roof: It differs from the installation on the ground by means of supports
mounting panels which if the roof slope is 45 degrees involves
lower costs than ground mounting brackets. For good efficiency
Positionmounting must be south with an angle of 45 degrees.

Installation on the ground: It is generally more expensive in terms of
labor costs as well as the panel fixing support but allows
installing more panels in operationdepending the size of the land area. Ground-mounted PV installations require fencing to restrict accidental access to the premises and secure the area with lighting and surveillance cameras. For proper efficiency. Good mounting position should be south with an angle of 45 degrees.

Production monitoring of energy is done by the owner of the production facility
through the software of the equipped inverter and with smart termination. The amount of energy injected into S.E.N. is calculated by the approved energy meter which can be
in the case of domestic consumers, a bidirectional one (records the energy
infected and the energy drawn from the network).

Minimum conditions ofmaintenance. For production in optimal parameters photovoltaic panels must be kept clean. It is preferable that the temperature on the surface of the panels be as low as possible for a good yield.

IMPORTANT— When we choose the type of inverter used and want to inject
energy in the network we must take into account the list of inverters published by The Romanian Energy and System Transport Operator (Transelectrica) List of authorized inverters.
approved by ANRE. Most populare invertoare sunt HUAWEI, FRONIUS, VICTRON, SMA.

Sizing a photovoltaic installation:
To size a photovoltaic installation, complete the following
data:

Beneficiary name as it appears on the energy bill, contact phone number, email,
the address of the installation site, the available installation area in square meters,
the electricity requirement at that location kw/year. The amount of energy
consumed at the place of consumption in the last 12 months. Relevant pictures and plans
with the mounting location jpg format.

Law of the prosumer:
The prosumer is the owner of a photovoltaic installation that produces electricity with the aim of consuming it for its own needs again
the surplus is injected into the national grid SEN with the aim of using it in
the times when the solar installation does not produce due to the lack of sun. More
many information you can read by opening ,,Cthe press release of 24.02.2022,,