Network inverters

A grid-connected inverter is the key component of a solar power plant connected to the national grid. Its operating principle is quite simple: it converts the direct current from the solar panels into alternating current and feeds it into the domestic grid or sells it back to the grid under the green tariff scheme. Altek offers Asterion series string grid-connected inverters with capacities ranging from 30 to 125 kW, complete with an official warranty and stock available in Kyiv, Lviv and Dnipro.

Grid-connected inverter: a solution for solar power stations

A grid-connected inverter is the core component of a solar power system connected to the national grid. It converts the direct current from the solar panels into alternating current and feeds it into the domestic or industrial grid. Batteries are not required in this setup – the system is as simple and cost-effective as possible.

This is currently the most affordable solution for sites with a reliable electricity supply, where the main aim is to reduce electricity bills or earn money by selling surplus energy at the green tariff rate.

Where is a grid-connected solar inverter used?

Grid-connected inverters are used in a number of different applications. They are chosen for:

• residential buildings with a reliable power supply;
• industrial and commercial premises – offices, warehouses, farms;
• solar power stations operating under the green tariff scheme;
• the agricultural sector and greenhouse operations.

The Altek catalogue features Asterion series string inverters with capacities ranging from 30 kW to 125 kW, suitable for systems of any size.

How a grid-connected solar inverter works

The panels generate direct current. The grid-connected solar inverter converts this into 50 Hz alternating current. It synchronises with the parameters of the external grid. If generation exceeds consumption, the surplus is automatically fed back into the grid.

If the external grid is disconnected, the inverter stops immediately. This is a safety standard requirement. This is precisely why the grid-connected model does not provide backup power: in the event of a fault on the line, the house loses power along with the grid.

Grid-connected inverter for the green tariff: benefits and specifications

The main advantage of an inverter designed for the green tariff is its high efficiency (up to 98.6% in modern models) and the complete absence of battery costs. The system pays for itself more quickly than a hybrid solution.

Key features to consider when choosing: MPPT voltage range, maximum input current, protection rating, availability of Wi-Fi monitoring, and certification for connection to Ukrainian grids.

Buy grid-connected inverters in Ukraine

Altek.ua is a direct supplier offering an official warranty and warehouses in Kyiv, Lviv and Dnipro. Please check the catalogue for the current price of the grid-connected inverter. To order an inverter for the green tariff with delivery across Ukraine, please call a sales representative or submit an online enquiry.