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Battery Energy Storage System

Redflow’s Advanced Battery Technology Takes Center Stage in Pioneering US Project

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Redflow Limited (ASX: RFX), a global leader in clean energy storage, is making waves in the renewable energy sector as its zinc-bromine battery technology has been identified as the preferred choice for a cutting-edge project recommended for grant funding by the California Energy Commission (CEC).

“The Barona Community LDES Project signifies a significant leap forward in our journey towards greater energy resiliency and sustainability,” says Raymond Welch, Barona Tribal Council Chairman. “This initiative will help the Band achieve greater energy sovereignty through control over our own energy resources.”

The Barona Band of Mission Indians’ innovative project, named the Barona Community LDES Project, has received a nod from the CEC for its focus on energy storage for resilience. The project, aimed at delivering improved resiliency and sustainability, features a 6.6 MWh flow battery system powered by Redflow’s advanced zinc-bromine battery technology.

Working in collaboration with Prosper Sustainably and Microgrid Initiatives, the Barona Band, along with Redflow Limited and Ameresco, has successfully prepared the proposal that stood out as the first-ranked submission from a pool of twelve projects in a competitive solicitation process. The AUD $20.1 million Barona project has been recommended for a substantial grant of AUD $13.8 million by the CEC.

“The recognition from the California Energy Commission reaffirms the technological prowess of Redflow in the clean energy storage sector,” notes Tim Harris, Redflow CEO and Managing Director. “This project showcases Redflow’s technology capabilities on a commercial multi-megawatt hour scale, delivering greater resiliency and grid-infrastructure benefits.”

The grant terms are currently in negotiation, with the goal of commencing development activities for the energy project in the second half of this year and an anticipated deployment timeframe in 2025. Funded by the CEC’s Electric Program Investment Charge (EPIC) program, this initiative is designed to support the Barona Band of Mission Indians in delivering reliable, resilient, and sustainable clean energy to their community while also opening up economic development opportunities for the Tribe.

Redflow CEO and Managing Director, Tim Harris, expressed enthusiasm about the project, emphasizing that the project will deliver greater resiliency and grid-infrastructure benefits for the Barona Band of Mission Indians while providing a lifetime of energy cost savings unmatched by competing battery energy storage system (BESS) technologies.

“Subject to completion of the grant award process, this would be Redflow’s fourth multi-megawatt hour project in California involving the CEC as a funding partner,” Harris added. “Redflow’s LDES technology is flexible, allowing for a 100% depth of discharge without impairing BESS capacity or lifespan, aligning seamlessly with California’s decarbonization goals.”

For more information about the project and the conditions under which the funding is awarded, you can visit the CEC’s website. Redflow’s innovative contributions to this project underscore its commitment to advancing clean energy solutions and driving the transition towards a more sustainable future.

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The Battery Energy Storage boom.

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In recent years, there have been significant advancements in battery energy storage technology. These advancements have the potential to revolutionize the way we use and store energy, making it more efficient, cost-effective, and environmentally friendly. In this article, we will discuss some of the latest developments in battery energy storage and their potential impact.

One of the most promising advancements in battery energy storage is the development of solid-state batteries. Unlike traditional lithium-ion batteries, which use a liquid electrolyte, solid-state batteries use a solid electrolyte. This makes them safer, more durable, and more energy-dense than traditional batteries. According to Dr. Venkat Viswanathan, a professor at Carnegie Mellon University, “Solid-state batteries can offer up to 2-3 times the energy density of traditional lithium-ion batteries, which means they can store more energy in the same amount of space.” This makes them ideal for use in electric vehicles, where space is limited and energy density is crucial.

Another promising development in battery energy storage is the use of flow batteries. Flow batteries use two electrolyte solutions, which are stored in separate tanks and pumped through a cell stack to produce electricity. According to Dr. Jay Whitacre, a professor at Carnegie Mellon University and founder of Aquion Energy, “Flow batteries are ideal for long-duration energy storage applications, such as renewable energy integration, because they can be charged and discharged for hours or even days without degradation.” This makes them ideal for use in grid-scale energy storage systems, where energy is needed on demand and for extended periods.

Advancements in battery energy storage technology are also leading to improvements in battery recycling. According to a report by the International Energy Agency, “Recycling of lithium-ion batteries is expected to become increasingly important as the electrification of transport and other sectors accelerates.” One of the most significant advancements in battery recycling is the use of hydrometallurgical processes, which use chemicals to dissolve the metals in batteries and recover them for reuse. According to Dr. Linda Gaines, a researcher at Argonne National Laboratory, “Hydrometallurgical processes can recover up to 99% of the metals in lithium-ion batteries, making them an efficient and sustainable solution for battery recycling.”

Overall, advancements in battery energy storage technology have the potential to transform the way we use and store energy. Solid-state batteries, flow batteries, and battery recycling are just a few of the latest developments in this field, and there are sure to be more to come in the years ahead. As Dr. Viswanathan notes, “Battery technology is evolving at a rapid pace, and we are just scratching the surface of what is possible.” With continued research and innovation, we may one day see a world powered entirely by renewable energy stored in advanced battery systems.

References:

  1. Viswanathan, V. “What’s Driving the Development of Solid-State Batteries?” Energy Institute Blog, Carnegie Mellon University, 20 Apr. 2021.
  2. Whitacre, J. “How Flow Batteries Can Enable Long-Duration Energy Storage.” Energy Institute Blog, Carnegie Mellon University, 20 Apr. 2021.
  3. “The Future of Batteries: Reuse and Recycling.” International Energy Agency, Nov. 2019.
  4. Gaines, L. “Recycling Lithium-Ion Batteries: The Quest for Sustainable Production.” Argonne National Laboratory, 14 Dec. 2020.

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Tesla Solar Inverter – first looks!

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After an unprecedented 2020, Tesla have been busy in the background and this week have announced the launch of a new solar inverter.

An inverter is an important part of any solar system – it’s used to convert DC power (generated by your solar panels) into AC power (i.e. usable for grid export or usage in the home). For Tesla to dip their toe in this end of the market shows an interesting insight into their overall strategy to help manage renewable energy as widely as possible. Their website has a bit of a spiel about the product:

“Tesla Solar Inverter completes the Tesla home solar system, converting DC power from solar to AC power for home consumption. Tesla’s renowned expertise in power electronics has been combined with robust safety features and a simple installation process to produce an outstanding solar inverter that is compatible with both Solar Roof and traditional solar panels. Once installed, homeowners use the Tesla app to manage their solar system and monitor energy consumption, resulting in a truly unique ecosystem experience.”

Tesla Solar Inverter
Tesla Solar Inverter (source: Tesla.com)

Can I buy the inverter in Australia?

You can’t actually view the Tesla Solar Inverter page on the official Australia Tesla website yet (it just 404‘s) – but according to their press release “(the inverter) completes the Tesla home solar system”. You can use the American link which will show you the (fairly utilitarian) details they are currently providing.

So you still can’t get this in Australia but we’ll keep you posted as soon as there’s any information. Tesla are very US focused so hopefully they bring the party to Australia sooner rather than later! And on that note, no news yet on the Tesla Powerwall 3 but we’re still waiting with bated breath. The site for the new inverter notes that it’s “built on Powerwall 2 technology for exceptional efficiency and reliability” so maybe we are a ways off yet?

Tesla Solar Inverter Specifications

The product 660mm high and 411mm wide. It’s available in two configurations, depending on how many solar panels you have on your roof – 3.8 kW and 7.8 kW.

The new inverter will be compatible with ‘standard’ solar panels as well as integrating seamlessly with the Tesla Solar Roof.

A warranty is available for the product and will be a strangely chosen 12.5 years. Haven’t seen a half year in a warranty in a while!

The product will also feature Wi-Fi, Ethernet and cellular connectivity with OTA (over the air) updates, and has been “designed to integrate with Tesla Powerwall and Tesla app”. Matching inverters, batteries and panels can be quite the mission if you’re looking to get the best result so it’s nice to see Tesla working hard to offer more of a ‘full stack’ approach to renewable energy (not just solar power either!).

Lastly, it has 4 MPPT (Maximum Power Point Tracking) controllers. Most inverters have two so it’ll be interesting to see what we’re in for with the Tesla Solar Home lineup!

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Tesla in Townsville – Bohle Plains’ 4MW solar battery.

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Tesla in Townsville – Solar giant Tesla will install a 4MW/8MWh solar battery in Townsville, North Queensland to help manage renewable energy within the community. The battery is expected to be operational by the end of 2019.

Tesla in Townsville – Bohle Plains’ 4MW solar battery.

A community-scale battery will be installed in Townsville to help store excess energy, provide backup power to the community, and assist in providing support to Ergon’s virtual power plant, which draws electricity or reduces load from customers Queensland wide. This helps shore up any supply issues to the National Energy Market (NEM), especially during peak times such as during a heatwave.

Publicly owned Yurika manage the plant and it’ll be fascinating to see some statistics as to how this Tesla Powerpack helps QLD – with the South Australian Tesla Battery at the Hornsdale Power Reserve saving $25m in its first year of operation, we expect the result to be similarly impressive. 

Tesla in Townsville (Powerpack) (source: Tesla.com)
Tesla in Townsville (Powerpack) (source: Tesla.com)

“This is a small but significant addition to Queensland’s publicly-owned electricity system, a system which is delivering cheaper prices on average compared to other mainland states in the National Energy Market,” said Acting Energy Minister Mark Furner.

“Battery storage technology is the next stage in steady progress to enabling a renewable energy future and reaching our target of 50% renewable energy by 2030.”

“With around 20,000 residential rooftop solar systems in Townsville, battery storage technology will help ensure power quality and reliability in the local network.” he continued in quotes repeated in Clean Technica. 

Design work has already started on the battery and Tesla in Townsville is closer than you may think – the battery is scheduled to be fully operational in late 2019. Given that Townsville and its surrounding areas have seen a significant amount of investment in solar over the past few years, it’s going to be fantastic to have this battery to help stabilise the grid and provide cheaper power.

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Battery Energy Storage System in Alice Springs

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Battery Energy Storage System – Alice Springs is set to receive its first grid-scale battery as solar power in the Northern Territory heats up.

Alice Springs Battery Energy Storage System

Battery Energy Storage System Alice Springs
Battery Energy Storage System discussion at Alice Springs (source: territorygeneration.com.au)

The $8.3M, 5MW/2.5MWh grid-scale battery storage facility in Alice Springs was announced last year and has been completed this week. It was built by New Zealand solar company Vector using LG grid-scale solar batteries.  

Government owned Territory Generation (The Northern Territory’s major electricity producer) have advised that they’re hoping this battery will facilitate greater uptake of solar in the NT:

“The Battery Energy Storage System is an important milestone in the Northern Territory’s transition to renewable energy and a critical piece of infrastructure to support the Northern Territory Government’s Roadmap to Renewables strategy,” Territory Generation Chief Executive Officer Tim Duignan said.

“Reliability and stability of the power system is a critical barrier in the uptake of renewable energy across Australia, and I am pleased that we are at the forefront of tackling this issue right here in Alice Springs,” he continued.

The BESS should have quite a big impact on base-load power as well, so let’s see how it fares during summer 2018/19. Previously a very conservative approach to local grid management (read more in RenewEconomy) means this battery should help quite a lot: with half an hour storage capability, and can supply 8MW for 6 seconds, or 7.5MW for 60 seconds – suitable for the moments everyone decides their air conditioners need to be turned on at the same time!  

Mr. Duignan also discussed the plans for Darwin solar in the future: “The cutting-edge technology in our Battery Energy Storage System will reinforce Alice Springs as the solar capital of Australia by enabling greater solar penetration whilst maintaining grid stability.”

We wrote about the Battery Energy Storage System (BESS) last June as it was unveiled in an attempt to compete with the other states, where the Northern Territory was lagging behind considerably (January 2017 PV output was 4,049MWh vs Queensland’s 126,629MWh). 

The Northern Territory is in a very unique position compared to its neighbour states – the state hosts a mere one percent of the total population but it represents approximately 15% of Australia’s land mass. However, installs are more expensive over there due to less competition and higher cyclone ratings required on solar panels. This dearth of Darwin solar is starting to change and there are a raft of high quality solar installers working hard in Darwin, Katherine, Alice Springs, and more. It’ll be interesting to see how quickly they can catch up to the other states. 

Darwin Solar Farms

There are plenty of farms and solar projects in various stages of completion in the Northern Territory and this is growing rapidly:

  • GPT Group have 1.25 MW at Casuarina Square shopping Centre
  • Darwin International Airport’s 4MW.
  • Epuron are working on a 25MW Solar plant at Katherine.
  • The Australian Defence Force have tendered for a 12MW of solar (combined) at their Darwin and Robertson Barracks.
  • Rim Fire Energy Retail’s 10MW Batchelor solar farm.
  • Infigen Energy are building a 12MW solar farm at Manton Dam and 10MW at Batchelor.
  • Community solar project “Repower Alice Springs” is planning for a 10MW community solar farm.

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