Testa s.r.o.

The renewable resources centre

TESTA Ltd. has been dealing with planning, financing, implementing and operating of photovoltaic power plants since 2007. The Sun is an inexhaustible source of energy that can be easily transformed into the electric power or heat and it can be done by a method very considerate to the environment. Approximately 30m2 of open space can be used for installation of 1 kWp (kWpeak). Such power is able to produce app. 950-1.100 kWh per a year. The production depends on the technology of used photovoltaic modules, inverter equipment, converters, and solar cables and also on the conditions of the particular region, intensity of solar radiation, the inclination of modules and optimal utilization of the space. More intensive solar radiation and less shading results in greater production of electric power.

Our offer

We will offer made-to-measure solution to each customer. You will get your own turnkey photovoltaic power plant or you can rent us your free space. It can be either your land (from app. 30 000m2) or a roof (from app. 3000m2). We will become your competent partner during the planning phase – the interests of stakeholders, property owners and towns/villages will be integrated into the project. We will perform as the key supplier during the implementation phase and ensure a supervision of the whole project. Then we will guarantee technical and economic operation for the whole life-cycle of the project.

Technology

TESTA Ltd. uses the latest technologies for the constructions of photovoltaic plants. It strives for optimal solution for each project, making sure that it will be the most effective in given conditions.

Solar module

Solar module is the fundamental structural component. The solar module transforms the solar radiation into the electric power. The photovoltaic power plants are created by assemblage of solar modules. TESTA Ltd. uses mainly thin-layer solar modules that are made on CdTe base.

The advantages of thin-layer module on CdTe base:

• high production of electric power in various climatic conditions
• very good utilization of diffused light
• low temperature coefficient
• energy payback time 1 year
• high annual specific performance in kWh / kWp (Performance Ratio cca. 84-86%)

Inverter

Inverter is electric equipment that transforms direct-current voltage into alternating voltage. The inverter in the photovoltaic power plant transforms produced direct current into alternating current, which is conducted away to the public distribution network by high-tension cable. The inverter can reach 98% efficiency.

Solar panel stand

Solar panel stands are used for mounting of solar panels and enable setting up the required slant of modules. They are usually made of steel and aluminium.

The overview of realized photovoltaic power-plants is given in the references.

Other activities of TESTA Ltd.:

• The building centre
• The roof centre