Fusion is pretty much cracked and there's no real way to boost the speed of it. 
The reactors take decades to build and years to bring on line.
The first reactor prooved their calculations. Next reactor they are building now boosts that knowledge(ITER -http://en.wikipedia.org/wiki/ITER)  and will prove the next step and the one after that is a proper power station (demo - 
http://en.wikipedia.org/wiki/DEMO)
Just look at the length to do stuff
2006-11-21	Seven participants formally agreed to fund the creation of a nuclear fusion reactor.[9]
2008	Site preparation start, ITER itinerary start.[20]
2009	Site preparation completion.[20]
2010	Tokamak complex excavation start.[21]
2011	Tokamak complex construction start.[21]
2015	Predicted: Tokamak assembly start.[12]
2018	Predicted: Tokamak assembly completion, start torus pumpdown.[12]
November 2019	Predicted: Achievement of first plasma.[22]
2026	Predicted: Start of deuterium-tritium operation.[22]
2038	Predicted: End of project.
And demos time frame
Conceptual design is to be complete by 2017
Engineering design is to be complete by 2024
The first 'Construction Phase' is to last from 2024 to 2033
The first phase of operation is to last from 2033 to 2038
The plant is then to be expanded/updated
The second phase of operation is to last from 2040 onwards