News release - 2011

Launch of a new CENELEC Workshop

CENELEC Workshop 5 – Flow Batteries - Requirements and test methods

Brussels, Belgium, 2011-09-21

 A CENELEC Workshop is planned as a first step towards standardization in the domain of flow batteries. It is intended to be a stepping stone towards a future European and/or international standard. Over the past 20 years, the interest in flow battery technology has grown, because of its potential for mass production of low cost, high performance energy storage system capable to be incorporated into large scale devices.

 A flow battery is a form of energy storage device,  in which electrolyte containing one or more electro chemically active species flows through an electrochemical cell that converts chemical energy directly to electricity, and/or vice versa. Additional electrolyte is stored externally, and circulated through the electrochemical cells. The design features in flow batteries must allow the movement of fluids.
The Workshop Agreement is proposed by a number of academic and research institutions, commercial and industrial organisations and others from Europe and non European Countries. The Workshop Agreement is intended to facilitate the pre-commercial phase, such as the user’s comparison of technical requirements of different types of flow batteries or between flow batteries and conventional electricity storage devices. It will also facilitate the marketing of flow batteries by providing   certainty and confidence to potential users.

 The Workshop Agreement will also provide guidance for conformity assessment bodies to benchmark the flow batteries’ conformity with existing directives and other regulations.


CENELEC Workshop Agreement

The Workshop aims at providing guidelines to include:

  • definitions
  • criteria for measuring the battery performance, including efficiency
  • performance criteria
  • criteria for defining and specifying actions at the end of life
  • battery maintenance criteria
  • evaluation criteria
  • service life guideline for technical description of the flow battery.
The Workshop will not address safety issues.
CENELEC Workshop Status
A comprehensive information session has already been held in Wr. Neustadt, Austria on 6 July, 2011.
The kick-off meeting of the workshop will take place on Sunday 27 November, at the following address:
Bismarckstrasse 33,
10625 Berlin
Related documents

- Draft Business Plan – comments to Catherine Vigneron by 21 November 2011
- Draft Agenda
- Proposed Chairman CV



Please send an email to Françoise Wanson by the 16 of November 2011 indicating the participant's name, company and email address. Immediately after the kick off meeting, the first plenary session of the workplace will take place in the same venue. Registration for the kick off meeting will include registration for the plenary session.


Contact points (See business plan here above) 


Catherine Vigneron
Programme Manager
Tel: +32 2 519 68 78