-

Energize What’s on the energy storage market besides Li-ion batteries?
- Advertisment -

What’s on the energy storage market besides Li-ion batteries?

- Advertisment -

Information from IDTechEx  –  

While Li-ion batteries are dominating the stationary energy storage sector, a growing number of companies are developing different technologies to be competitive in the future and bring to the market a more competitive energy storage system. Among the Li-ion batteries competitors, the redox flow battery (RFB) is one of the main competitors currently approaching the market.

This article provides an overview of the flow batteries characteristics, extrapolated from IDTechEx’s recent report “Redox Flow Battery 2020-2030: Forecast, Challenges, Opportunities”.

Recently IDTechEx performed an in-depth analysis of redox flow batteries from a technical and market aspect, evaluating their potential to address the evolving stationary energy storage market. While it is clear that Li-ion batteries will dominate the scene for the near future, this promising competitor has already shown its capability to gain its portion of the energy storage market, pushing the ES industry toward new horizons.

The extensive volumetric (Wh/l) and gravimetric (Wh/kg) energy density of Li-ion batteries make this technology well suited to address the electric vehicle (EV) market. Pushed by the cost decreasing from the EV market, this technology started to also be competitive in the stationary energy storage market, for front-of-meter (FTM), and behind-the-meter (BTM) applications. The capability to address the complete spectrum of the energy storage market is translated in a power range of few kW for behind-the-meter use, to MW power output for front-of-meter applications. These properties make Li-ion batteries extremely competitive and difficult to be challenged, although other technologies are starting to appear in the market.

Figure 1: Schematic representation of the electricity grid, showing the separation of front-of-meter and behind-the-meter. Source: IDTechEx

Besides the great advantage of Li-ion batteries, the hazardous materials adopted make them prone to ignite, if not carefully handled. In addition, once ignited these systems are very difficult to extinguish. PSA Group, in collaboration with the firefighter department, designed a specific solution to flood the battery stack and easily extinguish the fire, in case of ignition. Besides the risk of ignition, for stationary energy storage applications, Li-ion batteries offer a reduced cycle life (approx. 10 000 cycles) in comparison to other devices, such as RFBs which offer more than 20 000 cycles. Therefore, the larger cycle life and the safer chemistry adopted in redox flow batteries, despite the lower energy density, make this technology well suited for stationary applications.

Differently from the Li-ion batteries, the redox flow batteries working principle is based on flowing two liquids, the electrolytes, across the electrode. In this way, the electroactive species contained in the electrolyte react on the electrode surface generating electricity. Therefore, the larger the amount of electrolyte, the bigger the amount of energy is stored in the battery. The power output of an RFB is instead defined by the size of the electrode stack, and the kinetic of the chemical reaction. Therefore, a further advantage of redox flow batteries is provided by the decoupled energy, and power capacity, which allows simpler customisation of this kind of system.

Figure 2: Exploded representation of a redox flow battery, showing the different constituents. Source: Engineering aspects of the design, construction and performance of modular redox flow batteries for energy storage – L.F. Arenas, C. Ponce de León, F.C. Walsh – Journal of Energy Storage (2017).

Moreover, RFBs present longer cycle-life (RFB >25,000 cycles; Li-ion < 10,000), which is then reflected in a much lower levelized cost of storage, in comparison to Li-ion batteries. Although promising, the high technology capital cost is still the major limitation for this technology to enter the market.

In March 2020, IDTechEx performed an in-depth analysis, from a technical and market aspect of Redox Flow Batteries, to understand the current status of development of the redox flow batteries and their possibilities to address the market. The results of this analysis, published in the report titled: “Redox Flow Battery 2020-2030: Forecast, Challenges, Opportunities”, have shown a CAGR of 30% in the next 10 years, pushed by the large interest in energy storage systems, to support the electricity grid.

Figure 3: Front cover of IDTechEx’s Redox Flow Battery Report. Source: IDTechEx

Redox flow batteries are expected to be the direct competitor of Li-ion batteries for stationary energy storage applications for front-of-meter and behind-the-meter applications. In fact, from the analysis conducted by IDTechEx, a considerable amount of companies manufacturing RFBs are developing large scale systems for Front-of-Meter applications, while a solid, but smaller amount of companies are addressing the development of smaller-scale systems, addressing the Behind-the-Meter applications.

Among the different chemistries present on the market, the Vanadium Redox Flow Batteries (VRFB) is currently the most adopted type of chemistry, also due to its long historical development from the 1980s. Although this chemistry is currently the most investigated and adopted, other chemistries are also approaching the market, such as the all-iron RFB developed by ESS inc., the Zinc/Bromine flow batteries (ZBB), and the organic flow batteries.

For more information on this report, please visit www.IDTechEx.com/Redox or for the full portfolio of Energy Storage research available from IDTechEx please visit www.IDTechEx.com/Research/ES. 

Contact Natalie Moreton, IDTechEx, press@IDTechEx.com

 

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Latest Articles

Independent transmission system “essential” to end load shedding

by Roger Lilley, Now Media  -   To overcome the scourge of load shedding, two components are urgently needed: more generating capacity and an improved and...

Drivers improving the business case for solar power

Information from IM Power  -   Covid-19 has presented businesses with the opportunity to re-evaluate both their operational models and costs. Proactive organisations found themselves navigating...

Temperature monitor and controller saves municipality money

Instrotech recently supplied its DPM4003 and DPM3001M (low- and high-alarm relay output) temperature indicators to Levivi22 Engineering and Projects, the company contracted by Tshwane...

Undertaking wall thickness testing at Tutuka

During the lockdown in June, rope-access specialist Skyriders undertook an inspection of pulverised fuel (PF) piping at Tutuka power station near Standerton in Mpumalanga...

Rentable solar power now available

Aggreko, a leading provider of mobile, modular power, temperature control and energy services, today announces the immediate availability of its solar power rental offer....

EU solar power association signs cooperation agreement with SAPVIA

SolarPower Europe and the South African Photovoltaic Industry Association (SAPVIA) have signed a Memorandum of Understanding (MoU) to strengthen cooperation and explore new business...

First BW4 wind farm celebrates commencement of commercial operations

South Africa’s first bid window four (BW4) wind farm, part of government’s Renewable Energy Independent Power Producer Procurement Programme (REIPPPP), has announced its Commercial...

Maintaining backup battery systems for maximum usage and reliability

Information from Fluke  -   Most backup power systems use an uninterruptable power supply (UPS) and a string of batteries. The UPS backs up the digital...

Renewable energy company offers bursaries for tertiary education

Globeleq, a leading independent power producer operating in Africa, is offering bursaries for tertiary education. The Globeleq Scholarship Fund aims to develop skills needed...

SA’s Risk Mitigation tender and what it means for energy storage, renewables and gas

by Andy Colthorpe, Energy-Storage news  -   South Africa’s Ministry of Mineral Resources and Energy is conducting a fairly unique procurement programme for 2 GW of...

Eskom acknowledges load shedding’s damage to the economy, promises improvement

Eskom's CEO, Andre de Ruyter, says the power utility understands that it has a critical role to play in enabling South Africa's economic recovery...

MEA Energy Week conference draws world-class lineup

Information from Siemens  -  Siemens Energy and partners are holding a major Middle East and Africa-focused virtual conference, entitled ‘Shaping the Energy of Tomorrow’, from...

How to classify outdoor circuit breakers

Information from Noja Power  -   Electrical engineering switchgear classification is a challenging topic. With the varied terminology for electrical equipment around the world, clarity on...

What’s on the energy storage market besides Li-ion batteries?

Information from IDTechEx  -   While Li-ion batteries are dominating the stationary energy storage sector, a growing number of companies are developing different technologies to be...

Electrical junction box offers ten entries

A rectangular-shaped junction box, which is both Ex e and IP68 certified, is now available from Pratley. Known as the Enviro Rectangular Junction Box,...
- Advertisement -