Distributed Storage

Researchers in Finland have demonstrated the technical feasibility of an off-grid residential PV system combined with short-term battery storage and seasonal hydrogen storage. The proposed model is applicable only to northern climates, as higher levels of solar radiation in southern locations would mean a reduced need for seasonal storage. It was tested in an existing single-family house in Finland with a 21 kW rooftop array and a ground source 6 kW heat pump.

Last week, the European Commission announced it plans to implement sustainability standards for Europe’s growing battery industry. Consultant Circular Energy Storage published a report on lithium-ion battery life cycle and recycling economics this month and its findings ask tough questions of the commission’s proposals.

A unit of Largo Resources is launching a new vanadium redox flow battery for utility-scale storage projects, microgrids, renewable energy integration, grid smoothing, and backup power. The battery will feature a modular architecture, based on 1 MW “building blocks” and 2 MWh blocks of storage capacity.

A team comprising researchers from the University of California San Diego and micro battery developer ZPower have developed been busy in the lab. The result is a flexible battery with highly competitive electrochemical features and the option to manufacture at low cost with screen-printing.

After more than a year of testing, Relectrify has released the interim results of a pilot that combines repurposed batteries from Nissan Leaf vehicles with proprietary inverter technology.

The world’s second largest battery market is mulling strict regulation of what type of products can be sold within it. The bloc wants to tighten rules on using hazardous materials and would encourage circular economy approaches. The scope of the commission’s proposal would also affect the design of devices, with phones, laptops and other portable gadgets without removable batteries set to be prohibited.

A group of scientists and companies in the Netherlands has tested a PVT heating concept in a green district and has found that the proposed design, which is also based on underground storage and the use of heat pumps, is technically and economically feasible.

Available in four different products, the series features a conversion efficiency of 20-21.2%. Two of the panels are packaged in a sleek, all-black aesthetic.

QuantumScape reported performance results this week for its solid-state batteries and their potential impact on the electric vehicle industry.

LG Chem is spinning off its battery business into a new subsidiary, LG Energy Solution. It also launched two new battery series, Resu Prime and Resu Flex. These devices rely on new battery cells with a higher power density and with up to 16 kWh, they have a higher capacity than previous models. The first products are expected to be shipped from February or March 2021.