The energy agency found no evidence that companies withheld power to drive up prices.

The commission says the move was intended to drive up prices.

Other things being equal, this supply shift would be expected to drive prices up.

"Looking too prosperous will drive up prices and hurt the market," he said.

Aside from higher drug costs, what is driving up prices?

"This was an effort to drive up prices by any means necessary."

In a rising market, such purchases could drive prices up.

The competition has helped to drive up prices for the hotels.

Some say it was the large investors who have driven prices up.

It looks set to record a good price as a shortage of stock across London and low interest rates continue to drive prices up.