JobImpulse Inc., Southern Current named fastest-growing companies in South Carolina.

Forty of the state's fastest-growing companies celebrated their rapid success Thursday night in Columbia, withJobImpulse Inc. of Greenville and Southern Current of Charleston being named the top companies in the state.

The Roaring 20s recognizes 20 large and 20 small companies in an annual event hosted by SC Biz News and its partners at the DoubleTree by Hilton in Columbia.

Hundreds of business leaders and company representatives celebrated during a ceremony preceded by a networking hour and mini trade show in which the 40 honored businesses set up display booths.

To be eligible for the Roaring 20s, companies must have a physical presence in South Carolina and be a for-profit entity or a nonprofit organization, but not a government entity or a charity. Winners are chosen and ranked according to growth and revenue. Small companies are those with $10 million or less in revenue and large companies are those with more than $10 million.

JobImpulse is an international personnel services provider founded in 2006. The company has 50 sites in 12 countries, with U.S. headquarters in Greenville. Southern Current is a solar developer in the residential, commercial and utility-scale markets.

Hannah Solar Government Services of Charleston was the second fastest-growing company in the small business category and Greenville's THS Constructorswas second in the large business category.

The Roaring 20s, in order:

Small businesses

JobImpulse Inc., Greenville

Hannah Solar Government Services, Charleston

Thorne Ambulance Service, Greenville

Shelly Leeke Law Firm, North Charleston

Source Ortho, Mount Pleasant

The Boulevard Co., Mount Pleasant

Quantum Coatings, Mount Pleasant

The Hiring Group, Greer

Alder Energy Systems, Charleston

Cantey Foundation Specialists, Camden

Perceptive Recruiting, Greenville

Carriage Properties LLC, Charleston

Morris Business Solutions, Greenville

South Risk Management, Columbia

Blue Haven Pools & Spas Charleston, North Charleston

Intellectual Capitol Inc...