Typical costs: Typically it costs
$800-$1,200 to have a qualified electrician upgrade an existing panel to 100 amps, or
$1,500-$2,500 if a new panel is needed. Expect to pay
$1,300-$3,000 to upgrade to 200 amps, or $2,000-$4,000 to go to 400 amps. Installing a new sub-panel runs
$500-$1,000.
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