Insufficient risk analysis31 Jan 2024 12:16
Sodium ion batteries have been demonstrated by the chinese at a large scale and at energy densities similar to the new LFP lithium batteries (though lower number of cycles for now, they are close). they will take another 5 years of testing and improvement until they reach the market but they will (as will other battery tech including improvements to LFP chemistry)
Therefore Gore street should be very careful not to over invest in this tech without getting a good return with a relatively short payback - if the payback is too long its possible the battery loses value before its completed payback. I think this is likely in the UK market - though hopefully usa market holds up long enough for a payback.
of course sodium ion and other battery tech will not immediately flood BESS. other companies have also invested a lot in lithium ion and as the BESS get slowly replaced by sodium ion or other tech (starting 5 years from now) - the storage costs will continue to decline - and quite possibly this part is not factored in by Gore street. Even if existing BESS providers wont have more capital to reinvest into sodium ion, new entrants may be taking market share with cheaper technology by that time.
Gore street should be very careful with their capital allocation going forward - like others have mentioned they should consider carefully the current trajectory of spending with a higher hurdle rate due to these risks. Other companies like tesla can afford to have a year or 2 of 0 revenues in BESS since they are diversified, while gore street would have more issues in that case. I would especially say that Gore street needs to seriously review all UK projects in light of potential technical obsolescence, regulatory risks etc - that would likely mean waiting until rates are significantly lower to expand uk storage. In the US given the 30% rebate and higher yield i think it makes sense.
there are some positives too however, the grids will need a huge amount of storage over the coming years and if the UK or other markets get saturated, it should self balance since a reduction of supply should follow.
Overall the risks are not fully considered in the analysis by gore street - they have no sensitivty analysis to battery life (or battery tech life), they have not completed their NAV sensitivity analysis in an honest manner (why is the low case for revenue not actually the low case on p 33 annual report). they also use peer revenue curves for their assumptions/calculations, i would have thought that they looked into this themselves and would have their own view/analysis. Finally the discount rate is too low given the risks above - many companies are looking to generate 15% on equity to account for the risks in their business. applying a 15% to GSF would reduce nav around 50% to 55p which is where i guess the SP is going.
Also annual report page 33 , Stony was meant to be energised end of July and ended up being energised much later in Nov