RE: Interim report review14 Jan 2026 14:53
Why are we talking about longer duration storage in Sweden/Finland? The additional revenue generated is, in part explained, by the additional investment cost (longer duration storage has, until only recently, been a lot more expensive that shorter duration storage). Also, you're comparisons take no account of volume i.e. if you can only sell, say, 100MwH pa in Sweden/Finland as compared to, say, 500MwH pa in the UK you might still be better of selling at £60k/MW in the UK than, say, £200/MW in Sweden/Finland, subject to your costs of capital. You're comparing apples and pears; it's like saying GSF should sell Bentleys rather than Fords simply because they have a higher retail value.
US markets aren't saturated in the way that you suggest or might think. Trump's intervention thus far has apparently increased average US energy prices by c16%! Furthermore, wind and solar were actually driving down average US energy costs before his intervention! The US market is very complex and the price of energy in any given region is dependent on whether there is local oil and gas supplies and whether those supplies have access to export markets. Much of the US's oil and gas is "trapped" (does not have access to pipelines to transport to LNG terminals for export).
Oil and gas export prices are much higher than US domestic prices and "trapped" oil and gas supplies have no option but to supply local markets. From what I've been able to determine, gas was selling at, or around, the average, national production cost in Texas at the back end of 2025 (I'm not sure producers were even covering their transportation costs) and pumping more oil and gas will only make matters worse.
Selling at below cost may be sustainable for a short period but, if low prices persist, producers will be forced to cut production of face going bankrupt (this is not an uncommon cycle in the US oil and gas industry); not least, it will probably curtail much, if not all, of the planned investment in new production (which of itself will probably reduce overall production as existing wells deplete). This won't happen overnight but I believe that the seeds have already been sown.
As regards ERCOT, it's already facing increased YoY demand forecasts and it will be keen to stabilise prices so that suppliers/producers can each earn a crust. If they don't, they will likely face a collapse in supply (moth-balled battery storage facilities, reduced oil and gas supplies etc.) just when demand is expected to rise which will, in turn, see price spikes return.
ERCOT, if they have any common sense, will not like the state of the current market anymore than GSF (the same as the UK regulators back in 2024-25). In an ideal world, they want stable pricing not boom/bust. I doubt ERCOT are complete fools and will, I'm sure, looke to intervene and make changes but, again, this will not happen overnight and will probably take 12-24 months to feed through fully.