The phrase "extend the powers" is correct and usable in written English.
It can be used in contexts where you are discussing the increase or enhancement of authority, influence, or capabilities.
Example: "The new legislation aims to extend the powers of local governments to address community issues more effectively."
Alternatives: "broaden the authority" or "amplify the powers."
On Monday the government could seek to extend the powers for several months.
The UN experts are calling on the government not to extend the powers beyond their deadline on 26 February, but French politicians are considering changing counter-terrorism laws.
The Conservatives also say they will extend the powers of Right To Buy to association tenants, which will allow them to buy their homes at discounts.
So it assumed that the best way of reducing progressive influence on the Turkish-speaking community in Thrace would be to extend the powers of sharia law".
The bill would put an end to extortionate fees, and would extend the powers of the housing ombudsman to all landlords.
The two-day Commons report stage of the investigatory powers bill, which will extend the powers of the security services, is scheduled for Monday and Tuesday next week.
"It's a total fraud that will extend the power of monopolists rather than promote competition," he said.
Its principal change would extend the power to order the departure of foreign troops to the interim government coming into office on June 30.
Americans extend the power of the Sovet Union to include industry and economy when, in fact, they are only a threat to us militarily.
"What the Government is doing is the Deregulation Bill, which is currently before the House, will extend the power to set term dates to all schools by 2015.
The slew of terror laws passed after 9/11, both here and in the US, have been used to vastly extend the power of the intelligence services, and this has largely gone unrestrained and unscrutinised by committees like yours.
