TESVOLT supplies Rwanda with the world’s largest off-grid battery system

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 station and the storage system are being planned and constructed by the international project planner IdeemaSun energy.

Press photos: http://www.tesvolt.com/tesvolt-supplies-rwanda-with-the-worlds-largest-off-grid-battery-system

High charging speeds at low costs “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 PV power plant and release it again as quickly as possible. Only very powerful off-grid storage systems can supply the necessary emergency power several times per day, and there are only a few storage systems on the market which meet these requirements”, explains Simon Schandert, Director of Engineering at Tesvolt. “A further selection criterion was the necessity for the entire storage solution to be as reasonably priced as possible.” Tesvolt has developed storage systems which use prismatic battery cells, which enable high charging speeds through their particular design and chemical composition. The intelligent control system ensures that each individual cell is charged and discharged at the optimal rate for a particularly long service life. 134 lithium storage systems for water pumps Tesvolt 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 monitored The 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. Suitable for all applications Tesvolt offers storage systems in six different size categories with capacities ranging from 10 to 60 kWh. They can be combined flexibly depending on the desired storage size – for example, to form a large-scale storage system with a capacity of 1 MWh, which Tesvolt supplies as a ready-to-use container. The client also can decide how quickly the storage system should charge. For high charging speeds, the storage system is combined with several Sunny Island charge controllers from SMA. The greater the number of stand-alone inverters and the higher their output, the greater the amount of energy stored and the faster the system can supply it. Regardless of whether the storage system is connected to the power grid, this highly flexible system concept makes Tesvolt storage systems ideally suited to any application.

Tesvolt will be introducing its storage systems at Intersolar Europe in Munich from June 22–24, 2016. Intersolar exhibition booth: Booth 550 in hall B1

About Tesvolt Tesvolt specializes in commercial battery storage systems. The innovative company from Lutherstadt Wittenberg produces energy storage systems with a lithium iron phosphate base. They can be connected to all renewable energy producers in a low voltage power grid: Sun, wind, water, biogas and combined heat and power. All storage systems are produced at Tesvolt’s manufacturing facility in Germany, and the intelligent cell control is certified by TÜV Rheinland. www.tesvolt.com Press contact

Vera Neuhäuser Tel. +49 30 – 72 62 96 – 449 Mobile +49 178 – 53 68 425 neuhaeuser@sunbeam-communications.com

Press photos (click to enlarge)

Producing storage systems for Rwanda

Producing storage systems for Rwanda

Producing storage systems for Rwanda

All Tesvolt storage systems are manufactured in Germany

Tesvolt specializes in high-capacity storage systems

Tesvolt battery storage container TLC 500 with 0.5 MWh capacity

Tesvolt uses SMA stand-alone inverters

Simon Schandert, Director of Engineering at Tesvolt

Tesvolt logo

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THE NASHO PROJECT World’s largest off-grid PV-Battery system for irrigation

Location Lake Nasho, Ruanda

Initiator Howard G. Buffett Foundation

Battery Supplier Tesvolt GmbH

EPC System Integrator Ideemasun energy GmbH

The Project Solar powered water supply for 2000 farms on an area of 1.200 ha in Eastern Ruanda

Facts and Figures:

Lithium Energy Storage

Nominal Capacity 2.68 MWh

Rated Power 2,41 MW (max. 4.42 MW) Battery System 134 TESVOLT Li-Series

Battery Inverters 402 SMA Sunny Island 8.0 Set-up 24 containerized storage units

Solar Park

Performance 3.3 MW PV Modules 3.300 (Trina Solar)

Tracking system Ideematec SafeTrack Horizon Inverters 125 SMA Sunny Tripower 25000TL

Solar yield p.a. 2.028 kWh/kWp Project Partner

pv magazine global pv magazine Deutschland pv magazine Latinoamérica pv magazine China

14. JUNE 2016 | APPLICATIONS & INSTALLATIONS, ENERGY STORAGE, INVESTOR NEWS | BY: SAM POTHECARY

All Tesvolt storage systems aremanufactured in Germany

World’s largest off-grid battery system headed toWorld’s largest off-grid battery system headed toRwandaRwanda

The 2.68 MWh storage system will be supplied by German commercialThe 2.68 MWh storage system will be supplied by German commercialsystem manufacturer Tesvolt, and will be connected to a 3.3 MW PV plantsystem manufacturer Tesvolt, and will be connected to a 3.3 MW PV plantas part of an agricultural project.as part of an agricultural project.

With energy storage looking like it will be able to solve aWith energy storage looking like it will be able to solve a

lot of electricity headaches, German company Tesvoltlot of electricity headaches, German company Tesvolt

has raised the bar for off-grid systems, by agreeing tohas raised the bar for off-grid systems, by agreeing to

supply the world’s largest off-grid battery system tosupply the world’s largest off-grid battery system to

Rwanda. It will be used as a mini-grid during powerRwanda. It will be used as a mini-grid during power

cuts, which are common in Rwanda.cuts, which are common in Rwanda.

Tesvolt signed the contract to supply the decentralizedTesvolt signed the contract to supply the decentralized

system to an agricultural project in Rwanda’s Eastern Province. It will be used to create asystem to an agricultural project in Rwanda’s Eastern Province. It will be used to create a

mini-grid, during power cuts, to supply 44 water pumps. The array is made up of 134 lithiummini-grid, during power cuts, to supply 44 water pumps. The array is made up of 134 lithium

storage systems, with a combined capacity of 2.68 MWh.storage systems, with a combined capacity of 2.68 MWh.

The system will be connected to a 3.3 MW solar plant, which is being engineered andThe system will be connected to a 3.3 MW solar plant, which is being engineered and

constructed by IdeemaSun energy, and will allow the PV plant to continue running throughconstructed by IdeemaSun energy, and will allow the PV plant to continue running through

power cuts, which are very common in this region.power cuts, which are very common in this region.

“In Rwanda, the power supply fails three or four times a day for between 5 and 45 minutes,”“In Rwanda, the power supply fails three or four times a day for between 5 and 45 minutes,”

explained Simon Schandert, Director of Engineering at Tesvolt. “For this reason, anexplained Simon Schandert, Director of Engineering at Tesvolt. “For this reason, an

important criterion in the call for tender was that the storage system is able to absorbimportant 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. Onlyelectricity from the 3.3 MW PV power plant and release it again as quickly as possible. Only

very powerful off-grid storage systems can supply the necessary emergency power severalvery powerful off-grid storage systems can supply the necessary emergency power several

times per day, and there are only a few storage systems on the market which meet thesetimes per day, and there are only a few storage systems on the market which meet these

requirements.”requirements.”

Tesvolt’s state-of-the-art system has battery management monitors on every cell, so thatTesvolt’s state-of-the-art system has battery management monitors on every cell, so that

damaged cell can be identified, and then exchanged, before they completely fail. Thedamaged cell can be identified, and then exchanged, before they completely fail. The

company will be unveiling their storage systems at this year’s Intersolar Europe in Munich,company will be unveiling their storage systems at this year’s Intersolar Europe in Munich,

Germany later in the month.Germany later in the month.

News of the huge off-grid system comes a day after Bloomberg New Energy Finance (BNEF)News of the huge off-grid system comes a day after Bloomberg New Energy Finance (BNEF)

released released a report forecasting a huge growth in the global energy storage marketa report forecasting a huge growth in the global energy storage market. The report. The report

projects that the market will reach $250 billion by 2040.projects that the market will reach $250 billion by 2040.

Related News:Related News:

BBOXX raises $20m funding to boost African off-grid solar presence 30.08.2016Berkeley and GRID research partnership to explore off-grid solar potential 11.08.2016Lack of small-scale 'bankability' harming clean energy progress, finds IIED white paper20.07.2016IRENA forecasts 59% solar PV price reduction by 2025 15.06.2016Solar to account for 30% of all generation capacity investment until 2040 13.06.2016Energy storage market to grow to USD250 billion by 2040 13.06.2016Greece's islands are in need of more PV and storage 07.06.2016

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