Powin Energy has unveiled three new products, Stack225, Stack230 and Stack230P, its first products utilizing CATL battery cells. All three products were designed by Powin around CATL’s large form factor cells, utilizing Powin’s patented StackOS battery management and controls software. Powin’s proprietary Stack products can perform a wide variety of in front of the meter, behind the meter, and microgrid applications to meet today’s evolving energy storage needs, yet they are designed to be flexible so that as priorities shift, the battery applications can be adapted to meet the needs of future use cases.

Already in mass production, Powin’s Stack225 product is used for 2–hour duration systems and offers a 10-year, one-full-cycle-per-day performance guarantee. The Stack230P is a product designed for shorter duration applications such as frequency regulation and other ancillary services. The Stack230 is Powin’s first product released to the market providing a 20-year, one-full-cycle-per-day performance guarantee. Stack230 was specifically designed for solar + storage applications, which typically require over three-hour system durations and can greatly benefit from a 20-year warranted life span, aligning with the typical life cycle of PV modules. The Stack230 performance guarantee allows the customer to use the batteries installed day 1 to be used for 20 years without any replacement.

“We are excited to formally announce the expansion of our product line to include three new CATL based offerings. By joining CATL’s reputation for quality and consistency with Powin’s utility scale ESS platform we are delivering systems that meet our customer’s needs for performance, reliability and bankability,” said Geoff Brown, President of Powin Energy. “With its 20-year performance guaranty the Stack230 in particular presents an exciting new and affordable option for utilities and IPPs looking to pair storage with new or existing solar projects. We aim to accelerate the modernization of the electric grid by increasing the value of renewable generation assets with long-duration, affordable and high-quality energy storage systems. With its unprecedented reputation and product quality, CATL is the perfect partner in the furtherance of our mission.”

On April 7, 2020, the Federal Energy Regulatory Commission (“FERC”) announced that its staff will host a technical conference in July 2020 to discuss so-called “hybrid resources.” In its notice, FERC explained that it is using the term “hybrid resources” to refer to projects that are comprised of more than one resource type at the same plant location. For this summer’s technical conversation, FERC states that it will focus on scenarios where a “generation resource and an electric storage resource [are] paired together as a hybrid resource.”

FERC’s interest in this topic does not appear out of nowhere. FERC has been focused on facilitating emerging technologies and the integration of new technologies into the grid and the wholesale markets, as evidenced by recent orders such as FERC Order No. 841 (concerning participation by energy storage resources in U.S. wholesale power markets). In response to filings by the California Independent System Operator’s and PJM Interconnection for compliance with FERC Order No. 841, FERC received comments from the Energy Storage Association (“ESA”) and others raising the possibility of hybrid resources that would include energy storage.[1] ESA highlighted the hybrid resource issue and requested that FERC convene a separate proceeding or technical conference to consider the matter. Although FERC determined that ESA’s suggestion for a separate review of hybrid resources was beyond the scope of those Order No. 841 compliance proceedings,[2] it is convening this technical conference to learn more about the issue.

FERC’s technical conferences are not adjudicatory proceedings and will not create immediate obligations for FERC-regulated parties or projects. But technical conferences provide an opportunity for industry experts to educate FERC commissioners and staff on emerging trends in the industry. Because this generation plus storage topic is receiving more and more attention among energy industry participants (and indeed was the topic of a panel discussion at K&L Gates’ third annual Energy Storage Conference in November 2019), it is a timely topic.

Researchers at the University of Southern California looking to crack the renewable energy storage problem have developed a new version of a redox flow battery from inexpensive and readily-available materials.

Though there are huge lithium-ion battery installations from the likes of Tesla that can store energy harvested from renewables like wind and solar, they’re not exactly cheap. The USC researchers looked to an existing design that stores energy in liquid form.

In the so-called redox flow battery, a positive chemical and a negative chemical are stored in separate tanks. The chemicals are pumped in and out of a chamber where they exchange ions across a membrane – flowing one way to charge and the other to discharge.

Though such systems have previously used expensive, dangerous and toxic vanadium and bromine dissolved in acid for their electrolytes in the past, we have seen recent designs that replace those with organic or more environment-friendly alternatives.

For its design, the USC team used a waste product of the mining industry and an organic material that can be made from carbon-based feedstocks, including carbon dioxide, and is already used in other redox flow batteries.

In tests, the iron sulfate solution and Anthraquinone disulfonic acid (AQDS) battery was found able to charge and discharge hundreds of times with “virtually no loss of power.” The researchers say that the inexpensive nature of the materials used could also lead to significant electricity cost savings compared to redox flow batteries using venadium, if manufactured at scale.

April 9 (Renewables Now) – The Spanish ministry for ecological transition on Wednesday invited public and stakeholder opinion on the government’s Energy Storage Strategy and the Renewable Hydrogen Roadmap, two pieces of regulation needed so that Spain can reach the targets set out in the 2021-2030 national energy and climate plan (NECP).

Spain’s NECP addresses the opportunity to use surplus electricity with complex storage systems, as well as renewable hydrogen in high-temperature industrial processes and transport, the ministry said. But to develop and make use of these technologies, a proper strategy is needed.

Before drafting these documents, the ministry has asked stakeholders to comment on the role of storage in the electricity sector, possible incentives to promote its deployment, how to engage citizens and sectors in the implementation of the storage strategy, among others.

The consultation for the Renewable Hydrogen Roadmap will seek to identify sectors in which the use of hydrogen can contribute the most to the decarbonisation of the Spanish economy, possible barriers that prevent its deployment, as well as what factors should be considered from the socio-economic and environmental point of view.

Public consultation will be open for 15 days, but it will begin only after the state of emergency imposed to contain the COVID-19 pandemic is lifted, the ministry added.

With battery factories restarting and demand for EVs down, grid storage developers could face a new dynamic: cell oversupply.

We had to do a coronavirus energy storage roundup at some point.

The virus and ensuing stay-at-home orders hit the solar industry hard and fast. Some of those impacts carry over to storage, but battery-centric companies have dodged direct business losses pretty well so far.

Pure-play storage companies haven’t had to formally toss out their business forecasts, like SunPower and Sunrun did, or fire hundreds of people, like the reconstituted Sungevity. There hasn’t been a rash of formal delays to landmark battery projects (if you hear of any,…

With demand for energy storage solutions expected to go nowhere but up in the coming years, improving the performance of batteries, and reducing the environmental of their manufacture, are important areas of research.

Lithium-ion batteries are expected to remain the mainstream solution for energy storage for the foreseeable future, and much of the research in the field is focused on alternative materials and chemistries for these and other metal-ion batteries. But there are plenty of alternative battery types, and proton batteries represent one of the newer, less explored paths to a better performing battery.

The first working proton battery was demonstrated by scientists at Australia’s Royal Melbourne Institute of Technology in 2018. The concept is essentially a reversible hydrogen fuel cell: During charging, protons produced by water splitting are conducted through a cell membrane and into a storage material. And in discharging, the process is reversed to reform water.

New ground

Scientists at Uppsala University in Sweden chose to work on the proton battery concept thanks to the potential to design batteries that don’t rely on rare, expensive or otherwise problematic materials. “A great many of the batteries manufactured today have a major environmental impact, not least due to the mining of the metals used in them,” explained Uppsala University’s Christian Strietzel. “The point of departure for our research has therefore been to develop a battery built from elements commonly found in nature and that can be used to create organic battery materials.”

The proton battery developed by the Uppsala team is described in An all-organic proton battery energized for sustainable energy storage, published in Angewandte Chemie. The group worked with two organic molecule groups – quinones and thiophenes – as electrode materials, with an acidic aqueous solution as the electrolyte.

The battery can be charged at a constant voltage, and reached its full capacity of 60 milliamp-hours per gram within 100 seconds, which the group says would make it ideal for integration with a PV installation. After 500 cycles, the battery retained 85% of its initial performance, and was shown to retain these favorable characteristics at temperatures down to -24 C.

The latest episode of the Solar Media Podcast is now available to stream, featuring considerable discussion around the ongoing COVID-19 pandemic and its impact on the energy storage sector.

In April’s pod, Andy Colthorpe and Liam Stoker explore how the pandemic is causing delays to energy storage projects in the US and Europe and a forecasted slowdown in technology cost reductions.

The podcast can be streamed below:

California officials expect that the state needs 1 gigawatt of new long-duration energy storage by 2026 to advance its clean-energy transition.

That figure emerged in the “reference system portfolio” that the California Public Utilities Commission approved on March 26. The grid planning document calls for no new gas plants, although almost all of the existing capacity is expected to remain online throughout the decade. But it adds 11 gigawatts of utility-scale solar by 2030, nearly 3 gigawatts of wind and a groundbreaking amount of energy storage.

The plan anticipates 8,873 megawatts of batteries, the technology that dominates the energy storage market today. That’s many times over the national cumulative installed battery capacity that’s now installed. But the CPUC broke new ground in carving out space for the addition of nearly 1 gigawatt of “pumped storage, or other long-duration storage with similar attributes” by 2026.

“This is the first formal mechanism we’ve seen that recognizes that need in the system,” said Mateo Jaramillo, co-founder of seasonal storage technology startup Form Energy. “The state recognizes that it needs to send the right signal to the market now in order to meet the longer-term goals.”

Technologists working on long-duration storage, which proposes to complement wind and solar plants by storing power for many more hours than lithium-ion batteries can handle cost-effectively, have raised hundreds of millions of venture dollars and grant funding and produced an eclectic mix of plausible technologies. But none of them have achieved enduring success in the electricity markets as constituted today.

With the official call for 1 gigawatt of new long-duration capacity, California could become the first clear market for some of these emerging technologies, or perhaps the return of the oldest: pumped hydro storage. Then again, the CPUC planning document alone lacks the power to make that happen.

How big a deal is this?
Long-duration storage is not new to California. The CPUC already oversees 1,600 megawatts of pumped hydro storage. Those decades-old projects play a vital role in the state’s water supply system as well as serving the grid.

The COVID-19 crisis is bringing into the public eye the US’ dependency on importing goods, particularly batteries for advanced energy storage and electric vehicles, the CEO of a battery materials startup has said.

Dr Francis Wang, head of Nanograf, a US company working to commercialise a high energy density battery anode made with a composite of silicon and ‘curved’ graphene, replacing existing anodes which use graphite, said that the situation created by the novel coronavirus “is bringing to light… cracks in US infrastructure and the supply chain”.

Asked by Energy-Storage.news for an upstream technologist’s opinion on how supply chains have been impacted by the shutdown of operations in factories first in China and then elsewhere in the world, Wang said that “the US doesn’t make anything anymore, and we are having trouble because we don’t make equipment or materials and batteries is one of them”.

“Most battery production is split between Japan, Korea and China. It used to be roughly one-third, one-third, one-third, in terms of output. But in recent years it’s become closer to 60-70% of lithium ion batteries being made in China. That’s a big deal,” the Nanograf CEO said.

“Energy storage, especially portable power, for electric vehicles or iphones, iwatches, consumer electronics, and other use cases — it’s all linked to China. Coupled with the trade war – and the increased tensions generally between the US and China – you wonder whether the US might be in trouble because China isn’t very happy with us right now.”

All the US has these days in terms of advanced battery technology production, is the Nevada Gigafactory operated by Tesla-Panasonic, Wang pointed out, with legacy battery companies like Duracell and Rayovac largely reliant on alkaline tech: “a relatively antiquated technology”.

A survey of present and expected impacts of the COVID-19 crisis on member companies in the China Energy Storage Alliance (CNESA) has underscored their faith in recovery prospects, despite the worries of nearly 80% of respondents over “reduced operating income and tightening of liquidity”.

A summary of findings emailed to Energy-Storage.News said there has been an undoubted impact on both the upstream and downstream end of the energy storage industry, with supply chain production and project deployments and grid connections alike suffering delays.

However, association research manager Wang Si said in his summary that 64% of survey respondents believe “new opportunities for energy storage will emerge after the outbreak is contained,” while “most also believe that the energy storage market can still achieve its predicted growth rate in 2020”. The survey’s response-gathering process began on 5 February, while China was the focal point of the COVID-19 outbreak before the global spread that followed.

“In general, because the energy storage industry is still in an early stage of rapid development, the epidemic is likely to have a limited impact on the overall market development for the year,” Wang Si of CNESA wrote.

Cost reductions slowed by supply chain, demand impacts
In other words, CNESA noted that the domestic industry only began its full-on commercialisation last year and still awaits the creation of a supportive policy structure and market environment that could bring energy storage to rapid growth.

Perhaps hardest hit in terms of revenues will be small and medium-sized businesses that are primarily focused on the energy storage market, including system integrators, project developers and asset operators.