We've already had one Summerfest grounds stage announcement this morning – but how about a new lineup reveal complete with a new stage too? That's the case with the Generac Power Stage – aka the former Harley-Davidson Roadhouse – which revealed its inaugural headliner lineup this morning, featuring big-name acts like Run the Jewels, Diplo and DJ Jazzy Jeff. 

Generac replaced Harley-Davidson as the sponsor for the grounds stage late last year. 

As for the lineup, here's the headlining acts that'll electrify the new Generac Power Stage this September.

Sept. 2

4 p.m. – KennyHoopla
10 p.m. – Cold War Kids

Sept. 3

4 p.m. – Better Than Ezra
10 p.m. – TBA

Sept. 4

4 p.m. – TBA
10 p.m. – Rise Against

Sept. 9

4 p.m. – DJ Jazzy Jeff
8 p.m. – Alexander 23
10 p.m. – Quinn XCII

Sept. 10

8 p.m. – JAHMED
10 p.m. – G-Eazy

Sept. 11

4 p.m. – Iration
10 p.m. – 311

Sept. 16

4 p.m. – Masked Wolf
10 p.m. – Diplo

Sept. 17

10 p.m. – Run the Jewels

Sept. 18

4 p.m. – TBA
8 p.m. – Thurston Moore
9:45 p.m. – The Flaming Lips

For more information on tickets, lineups and more at the Big Gig, visit Summerfest's website. And stay tuned to OnMilwaukee for more Summerfest announcements – because the Big Gig doesn't intend on stopping them anytime soon today.