With interest rates so low, Now is the time to borrow for infrastructure projects.
The flow on effects to the economy and government coffers will be enormous.
If they want a double effect, they should look at spending on renewables and associated infrastructure.
Drastically reducing the input costs of power will be the productivity game changer.
The only issue with taking more renewables into homes means less spread the costs of upkeep and upgrades o the network. They need huge government energy projects that keep the infrastructure in government hands. At the moment they build it and give it away pretty much free to power companies to profit from. A really sensibly energy policy would help with non government investment so that we don't have to do it all.