The Energy Storage Report 2024

Now available to download, covering deployments, technology, policy and finance in the energy storage market

ROUNDUP: Fluence’s first Taiwan project, Redflow’s 2MWh California flow battery, Stem Inc acquires AlsoEnergy

Redflow’s zinc-bromine flow batteries and Dynapower’s inverters at the Anaergia biogas facility. Image: Redflow.

20 December 2021: Fluence supplying 6MWh BESS for Taiwan’s Automatic Frequency Control grid service

Fluence will supply a 6MW / 6MWh battery energy storage system (BESS) which will perform frequency regulation grid services in Taiwan.  

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The US-headquartered technology provider’s equipment will provide Automatic Frequency Control (AFC) services for the island’s main utility Taipower. Fluence’s customer is Ina Energy, a renewable energy independent power producer (IPP).  

Fluence will be working with local partner TECO Group and becomes the latest international player in the energy storage industry to deploy systems to play into the region’s frequency regulation market, after similar announcements in July from Powin Energy, in August from Wärtsilä and October from New HOrizons Ahead (NHOA).

It will be the 30th new market Fluence has entered since its launch in 2017 as a joint venture of AES Corporation and Siemens. Fluence CEO Manuel Perez Dubuc has taken part in the first instalment of our ‘Year in review 2021’ blogs, published today.

20 December 2021: Zinc-bromine flow battery provider Redflow completes 2MWh California project

Australian zinc-bromine flow battery company Redflow has completed its largest project to date, a 2MWh system in California. 

The project, comprising 192 units of Redflow’s batteries linked together, is at Rialto Bioenergy Facility, a waste-to-energy plant which converts a combined 1,000 tonnes of organic waste and biosolids into renewable natural gas and fertiliser, diverting waste otherwise destined for landfills. 

The flow batteries serve as part of the complex’s microgrid for site owner Anaergia, alongside a 2MW biogas-fuelled cogeneration unit, microgrid controls and a biogas conditioning system. The 192 battery units are clustered into 12 Redflow units called Energy Pods, each of 160kWh and tied to four 125kW Dynapower inverters. 

As reported by in March, the batteries store energy at the facility and are able to discharge to the grid during a five-hour peak tariff period which occurs between 4pm and 9pm every day. The project received grant funding assistance from the California Energy Commission.

“As our biggest single deployment system to date, Anaergia will provide a high visibility MWh reference installation for our growth into the United States and other global markets,” Redflow CEO and managing director Tim Harris said.

“I am delighted that we have passed this important stage. We have already had enquiries from multiple customers and engineering, procurement and construction (EPC) companies who have requested a site visit in early January.”

20 December 2021: Stem Inc to acquire solar asset management software player AlsoEnergy

Stem Inc will acquire solar asset management software company Also Energy Holdings (AlsoEnergy). 

The smart, AI-driven energy storage provider has entered a definitive agreement to buy all outstanding shares in Also Energy on a cash- and debt-free basis for US$695 million, including 75% cash and 25% in Stem common stock. 

Stem said the result will be a combination of its energy storage optimisation platforms and services with AlsoEnergy’s solar asset performance monitoring and control software, in effect creating a renewable energy project “one stop shop”.

The energy storage company will also be able to offer its energy storage solutions to AlsoEnergy’s existing front-of-the-meter and commercial and industrial (C&I) customers to attach battery storage to their solar PV. 

“Through this immediately accretive transaction, a combined Stem and AlsoEnergy will bring the unique software, controls, and analytics capability to accelerate the energy transition to a renewable, decarbonised future,” Stem Inc CEO John Carrington said.

“As the battery storage and solar industries continue to experience tremendous global growth, developers, asset owners, and utilities will increasingly look to our combined software capabilities to provide a unified platform for energy intelligence that improves project performance. The combined company will deliver an AI-driven software offering that we expect will simplify our customers’ asset management, boost their project returns, and accelerate our own growth trajectory.” 

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