I have managed to sell my TENAGA at RM9 on Friday.
The surge in price was mainly due to speculation play.
In actual fact, considering that the increases of over 100% in gas and coal, which consist most of TNB's cost, the 18% increase on residential and 26% increase in commecial buildings will not be sufficient to put it back on track.
TNB will still have trimmed profits for the coming years, but over the longer term, when the gas and coal prices are stable, then we can see TNB back to beat its earnings.
So, do not expect TENAGA's price to go up further, unless there are more developments in the company on ways it can cut its cost further.

This is just my 2 cents worth of opinion. Your opinion may differ from mine

I am pretty sure Tenaga will head south. Tenaga doesn't have an efficient business model, it's all politically linked. Don't forget IPPS might sell their power generation assets so they can pass the Windfall tax to Tenaga.