RE: Alfa and others27 Sep 2018 01:01
Brightonpier123 I don't see any issues at this time. It is a test battery for exactly that reason, to see how it performs and find and resolve any issues.
As a reminder or for anyone seeing this for the first time this is the statement from the RNS:
"During commissioning of the VRFB, a performance issue was experienced, and initial assessments confirmed a vanadium electrolyte constraint. As a result, the battery was not able to meet the specified operational performance. It was also determined that it would not be possible to resolve the constraint in South Africa at this time and a remediation strategy was immediately implemented. The remediation includes the provision of new electrolyte and hardware for the DC module of the battery. This will allow commissioning to resume and be completed in Q4 2018. The Company will provide an update on progress in November 2018."
So it is listed as an electrolyte constraint that will require new electrolyte and DC battery module. Clearly there are people more versed in VRFB technology than I am, but I believe BE are planning to manufacture mixed acid electrolyte and Ophidian mentioned earlier this battery is using single acid.
The reference to requiring new electrolyte is very interesting when coupled with the statement "It was also determined that it would not be possible to resolve the constraint in South Africa at this time". We could infer that this statement is very deliberate, attempting to make the point to us that the resolution will be new electrolyte and it cannot be resolved in South Africa at this time because we haven't built the plant to make it - yet.
The most important takeaway from this part of the announcement is that although it sounds negative I really don't think it is. The test did exactly what it was supposed to. It identified an issue, the necessary remediation was immediately identified and is in progress. So they know how to fix it and fix it they will and as I said earlier it will be important going forward in engineering this out at the earliest stage avoiding the need for any potential expensive retrofit some way down the line.
Another important consideration is that UET are not new at this. Their own site states "proven, high-performance large-scale stacks with 15 years of development, 9 years of field deployment, and hundreds deployed". So one question will be is part of this issue the deployment location/environment/climate.
Of course many of us are hungry for detail and we won't have to wait long to know more.