It kind of feels like they are playing hardball to get the government to increase the subsidies.
On the other hand:
"The case for a UK-led renewable energy developer, backed by the UK public which can benefit from the returns over the next few decades, has just become stronger," he said.
I think this would get a lot of support. Perhaps taking the Crown Estate seafloor money (over £300M last year) and investing that would be a good start.