June 14, 2016 – The German commercial storage system manufacturer Tesvolt has been awarded the contract to supply the world’s largest decentralized off-grid storage system, which acts as a mini-grid during power cuts. The company is set to deliver a lithium storage system with a total ca Contact online >>
June 14, 2016 – The German commercial storage system manufacturer Tesvolt has been awarded the contract to supply the world’s largest decentralized off-grid storage system, which acts as a mini-grid during power cuts. The company is set to deliver a lithium storage system with a total capacity of 2.68 megawatt-hours (MWh) which will provide water pumps in an agricultural project in Rwanda’s Eastern Province with emergency power. The 3.3 MW solar power plant and the storage system are being engineered and constructed by the international system integrator IdeemaSun energy.
134 lithium storage systems for water pumpsrnTesvolt is set to supply a total of 134 fully assembled lithium storage systems for the 44 water pumps. The storage system will supply the irrigation project with clean and safe emergency power, also boosting yields in local agriculture. This should improve the living conditions of around 2,000 farmers, who currently live in extreme poverty. In total, 402 Sunny Island charge controllers from SMA are to be deployed for the project. In the event of power cuts, the storage system will act as a mini-grid, enabling the PV power plant to continue running.
Every cell in the storage system is monitoredrnThe Tesvolt battery management system monitors each individual cell when the system is in operation so that any damaged cells are identified before they completely fail. If a cell is defective, the installer only needs to exchange that single cell, unlike in conventional storage systems where the entire battery block has to be replaced.
Tesvolt will be introducing its storage systems atIntersolarEurope in Munich from June 22–24, 2016.
Intersolar exhibition booth:Booth 550 in hall B1
134 lithium storage systems for water pumpsTesvolt is set to supply a total of 134 fully assembled lithium storage systems for the 44 water pumps. The storage system will supply the irrigation project with clean and safe emergency power, also boosting yields in local agriculture. This should improve the living conditions of around 2,000 farmers, who currently live in extreme poverty. In total, 402 Sunny Island charge controllers from SMA are to be deployed for the project. In the event of power cuts, the storage system will act as a mini-grid, enabling the PV power plant to continue running.
Every cell in the storage system is monitoredThe Tesvolt battery management system monitors each individual cell when the system is in operation so that any damaged cells are identified before they completely fail. If a cell is defective, the installer only needs to exchange that single cell, unlike in conventional storage systems where the entire battery block has to be replaced.
Tesvolt will be introducing its storage systems atIntersolarEurope in Munich from June 22–24, 2016.
Intersolar exhibition booth:Booth 550 in hall B1
Ingo ValldorfCorporate & Financial Communications
Phone: +49 3491 8797-234
The installation, in the Eastern Province of the landlocked African country, is being engineered and built by another German company, system integrator Ideema Solar, including a 3.3MW solar plant. It will power 44 water pumps at an agricultural project through 134 separate lithium-ion battery-based storage systems.
A Tesvolt spokeswoman confirmed to Energy-Storage.News that the project was awarded to the company through a tender.
“The PV plant and storage systems are financed by an international foundation and the government of Rwanda,” the spokeswoman said.
“After the installation the whole system will be donated to the local farmers,” she added, of whom there are 2,000 in extreme poverty in the area local to the project.
Straight out of Solar Valley
Tesvolt, which began manufacturing in 2015 after being launched by solar developer Daniel Hanneman and partner Simon Schandert, makes its lithium iron phosphate battery systems at facilities in Germany and is supported by the development bank of Saxony-Anhalt, the centre of the country’s once-famed Solar Valley. The company recently also completed a commercial scale solar self-consumption system in Britain.
Tesvolt systems use prismatic lithium cells which the company claims are designed to enable high speed charging and an intelligent control system for optimal charge and discharge, it claims. The company also says individual cells can be monitored and replaced in the event of failure. It already has a deal in place to pair its battery systems with SMA equipment. The Rwanda irrigation project will use 402 of SMA’s Sunny Island charge controllers, which it says can enable the aforementioned fast charging and forming a mini-grid which can also provide backup power in the event of outages.
'Need to constantly invest'
“In Rwanda, the power supply fails three or four times a day for between 5 and 45 minutes. For this reason, an important criterion in the call for tender was that the storage system is able to absorb electricity from the 3.3 MW PV power plant and release it again as quickly as possible,” director of engineering for Tesvolt Schandert said.
Other efforts to electrify and improve the lives of Rwandans through solar include the work of start-up Off-Grid Electric, which raised around US$70 million in 2015 for rural projects in Rwanda and Tanzania and UK firm BBOXX, which achieved the first ever securitisation of African off-grid solar arrays at the beginning of this year.
Rwandan English-language newspaper The New Times reported today that the Eastern Province’s governor, Odette Uwamariya, had said there is “need to constantly invest in water infrastructure” in the region before announcing a fresh set of investment measures in irrigation, water collection and treatment across her jurisdiction that the paper reported could amount to half her government’s annual budget from July.
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