National Grid have spoken out before, but now the power companies are starting to voice their concerns over the shambles that successive governments have made of the power sector and the very real possibility that we may soon see the lights going out.
The boss of the energy firm SSE has warned that "there is a very real risk of the lights going out" in Britain.
Ian Marchant said the government was significantly underestimating the scale of the capacity crunch facing the country.
The energy minister says it's all going to be OK and that there is plenty of spare capacity in the system.
Time to start panicking I guess.