Storage Highlights Countdown #9; Keeping score of battery performance with DNV GL


During the weeks before Energy Storage Europe Düsseldorf opens, on March 12, we will showcase the top ten storage products and innovations selected by our jury. The full ranking will be published in the pv magazine energy + storage special issue 2019, created with the Messe Düsseldorf conference venue. A public award ceremony for the Energy Storage Technology Highlights will be held at Energy Storage EuropeDüsseldorf on March 13, and we are looking forward to seeing you there, from 10 am at the ESE Forum in Hall 8b.

#9 DNV GL 

Keeping score of battery performance

DNV GL has released its first annual Battery Performance Scorecard to provide advice to product buyers. The testing and certification body says the tool can independently rank and evaluate battery products.

The scorecard aids the energy storage market by providing transparent, easily verifiable data with independent engineering reviews.

In its current form, the scorecard evaluates battery systems on several criteria. DNV examines whether a product’s average state of charge (SOC) is optimal for performance and the scientists then look at which SOC window shows best performance. Additional factors include battery C-rate – the rate at which a battery is discharged relative to its maximum capacity – as well as a product’s temperature behavior. Of the batteries tested, 88% were based on lithium-ion nickel manganese cobalt chemistry.

Until now, the level of battery lifetime data available to buyers was often varying and inconsistent. According to DNV GL, investors and developers have been forced to request information on battery types from the manufacturers and then had products reviewed using independent engineering reports.

That process can take months so the new independent scorecard accelerates project development.

Jury comments

Xavier Daval: “Our industry needs independent point of view frameworks to support sound development.”

Logan Goldie Scott: “The scorecard is a crucial first step in helping differentiate between battery technologies and, ultimately, providers on quality. This opaque industry needs it.”

DNV GL can be found at Energy Storage Europe in Hall 08b stand 8BC33.

The jury

Xavier Daval

Daval is an international solar and storage expert as well as CEO of French solar technical advisory firm kiloWattsol SAS, which he founded in 2007. He is an electrical engineer and former director for the EMEA region for an NYSE-listed manufacturer of tools for the electronics industry. He is also VP of French renewable energy association Syndicat des Energies Renouvelables, chair of its solar commission and director of the Global Solar Council.

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Logan Goldie-Scot

Goldie-Scot heads the energy storage insight team at BloombergNEF. He leads the company’s analysis on the global energy storage markets, providing insights on technology, markets, policies and regulation, as well as the competitive landscape. He also oversees the company’s analysis of supply chains.

Rolf Heynen

Solar Business Day 2017, 25 januari 2017, gespreksleider Peter Melis, georganiseerd door Solar Solutions InternationalHeynen is director of Good! New Energy. Good! is known for the annual Dutch Solar Trend Report – also published in English – the Solar Quarterly, the Solar Solutions international trade fair and the Solar Business Day conference. Good! is also active in renewable heating, smart lighting and buildings, energy storage, consulting, energy modeling and market research. Heynen holds degrees in electrical engineering and political science.

Mark Higgins

Higgins is chief operating officer of Strategen, a professional services firm focused on market development for a decarbonized grid. His broad energy sector experience before Strategen included serving as director of utility west at SunEdison, VP of finance for Hu Honua Bioenergy, and as Pacific Gas & Electric’s lead in key policy areas including interconnection and transmission planning.

Julian Jansen

Jansen is a research manager at IHS Markit Technology. He leads the group’s global research on stationary energy storage and provides insight on the key value drivers and emerging business models accelerating storage deployment across Europe and North America. Jansen also delivers strategic advice for bespoke projects featuring new energy technologies.

Florian Mayr

Mayr is a partner at Apricum and head of its energy storage, digital energy and green mobility practices. He is an expert in strategy, business development and transaction advisory in global renewable energy markets. Mayr advises cleantech companies on corporate and project financing. Before Apricum, he spent eight years in senior positions at McKinsey & Company and RWE.

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