A bit of history on Powercloud and past ambitions
In 2022, Powercloud did a collaboration with AWS and wrote a case study on using AWS resources to deploy Powercloud for their customers.
https://aws.amazon.com/solutions/case-studies/powercloud-case-study/
Most importantly it gives a hint of technology stack behind Powercloud and ambitions to enter the US market
"powercloud now has plans for international expansion. Its pipeline of new customers includes businesses across Europe, North America, and Australia. The scalability of AWS supports this growth. “As we expand to new countries, with new customers, we know we can confidently and easily deliver our solutions,” says (Zoran) Petrovic. Chief growth officer - Powercloud"
However Powercloud was already losing money from expansion into other regions such as US and Spain. In 2022 Powercloud made a loss of 19m Euros.
More importantly, their other investment in Chargecloud was losing money and in 2023 they decided to make an exit and sell their stake to the last 2 major shareholders

After the takeover by Hansen in 2024, further cuts were made which forced Powercloud to focus on the German, Swiss and Austria market https://www.energate-messenger.com/news/247504/powercloud-to-shrink-into-the-profit-zone

This meant that Kraken was able to migrate Powercloud customers onto their platform. Some may know that Origin Energy uses Kraken and has a stake in Octopus energy (another company I'm looking into).
It's hard to figure out what went wrong with Powercloud
Perhaps it could be the haphazard energy policy in Germany?
Apparently Germany has the slowest rollout of Smart Meters in the EU which is Powercloud's (and now Hansen's) key market.
This article about a draft policy to delay the smart meter transition rollout doesn't help.
Ah well, I had fond memories of backpacking in Germany and learning about the history. Was such a great country and industrial powerhouse when I visited. Not sure about it now.