Three companies, $4.9 billion in government support

May 31--Elon Musk's California companies -- Tesla, SolarCity and SpaceX -- have enjoyed at least $4.9 billion in government support.

Here's how the subsidies add up:

TESLA MOTORS: $2.391 billion total

$1.29 billion -- Nevada tax incentives for Gigafactory

$45 million -- Value of discounted Department of Energy loan

$90 million -- California Alternative Energy and Advanced Transportation Financing Authority

$517.2 million -- Sale of California and other regulatory credits

$284 million -- Estimated value of federal income tax credits for eligible U.S. buyers of Model S sedans

$38 million -- Value of California rebate for California buyers of Model S sedans

$126 million -- California Self-Generation Incentive Program

$647,626 -- California job training reimbursement

SOLARCITY: $2.516 billion total

$750 million -- New York State cost to build solar panel factory

$1.5 billion -- Estimated value of 30% subsidy for solar installation since 2006, including at least $497 million in Treasury grants

$5.6 million -- Oregon tax credits and rebates

$260 million -- New York local property tax exemptions

SPACE EXPLORATION TECHNOLOGIES: $20 million total

$20 million -- Texas state and local incentives and rebates for space launch facility near Brownsville

Sources: Staff research; Securities and Exchange Commission filings; Good Jobs First estimates of incentive value; California and New York state records; interviews with local and state officials in California, New York and Texas; estimates of discounted loan value from credit analysts; estimates of average solar installation cost from the Union of Concerned Scientists; estimates of Tesla U.S. car sales from IHS Automotive

jerry.hirsch@latimes.com