Solar roof Tajikistan
Tajikistan as part of Central Asia, bordering Afghanistan and point of intersection between Russia and China is gaining geostrategic, geopolitical and economic importance. The economy of Tajikistan has been growing for over 10 years at an annual rate 7 to 10% (GDP). Requirement for further development is not only the establishment of market economy structures, but also a stable power supply. The government planed an investment program in the energy sector of about US $ 2.6 billion from 2013 to 2016, among others for the construction of the Rogun hydroelectric power plant, the modernization of the Nurek hydroelectric power station and the construction of new power lines. The aim of the government is to ensure a perennial stable supply of power in the country and to increase the revenues from the export of electricity.
The visit of the President of the Republic of Tajikistan, Emomali Rahmon, in Berlin in 2011, commonly found attention and aroused the interest of the DPU investment for the country, the people and the economy. As a result of talks an initial agreement between DPU Investment and the Minister of Energy of Tajikistan on cooperation in the field of renewable energy was signed in 2012 and among others the establishment of a pilot plant for solar power generation and storage on the roof of the Ministry was agreed.
Launched by the German Energy Agency (dena) as part of the „Export Initiative Renewable Energies“ of the Federal Ministry of Economy and Energy sponsored pilot project was as part of the „dena Solar Roofs Program for Foreign Market Development“ from the German Energy Agency succesfully realized and ceremoniously handed over and put into operation on 13. September 2013.
The pilot project should take advantage of the photovoltaic as locally available and environmentally valuable source of energy provides a broad technically interested public. Major market potential lies in the power supply in rural areas and mountainous regions, which needs to develop. Target groups are primarily be facilities for health care, education and the community as well as private households.
The Pilot Project
The 15 kWp PV system, equiped with battery storage of BAE Batterien GmbH offers two distinct advantages. The PV system guaranteed in case of failures of the public power grid the partially own supply of electric power from the battery storage (backup system) and the self-consumption of generated solar power of battery storage increased significantly (peak shifting).
The crystalline PV modules from Meyer Burger AG / Roth & Rau AG convert the free solar energy into direct current. Subsequently, the direct current produced is converted through the AEG Protect PV 15 inverters to grid-compliant alternating current. The alternating current is used primarily for the supply of all consumers of the PV system. Produced the PV system a greater capacity than currently needed by the operator, the excess energy is fed into the battery storage.
To save the produced energy of the alternating current in the battery, is this temporarily converted into direct current by a bidirectional inverter (Sunny Backup 5000). The meaningful use of the battery storage is a complex task and is implemented by an automatic switching group (AS-BOX-M).
With a display in the foyer of the Department of Energy of the electricity generated by the PV system and the CO₂ savings are visualized.
The pilot project was implemented at the initiative of the DPU Investment GmbH in cooperation with BAE Batterien GmbH, Meyer Burger AG / Roth & Rau AG, AEG Power Solutions GmbH, Enerparc AG, the Ministry of Energy of the Republic of Tajikistan and OAO "Systemavtomatika». The German Energy Agency (dena) was promoter.