Shares were halted pending the news and plunged as low as $8.01 when the stock reopened for trading.
Apple responds that the data is stored on the iPhone 5s in a place that's inaccessible to others and the feature can be disabled.
The project is one of two chosen in response to legislation authorizing the state to procure energy from renewable sources.
The industry is expected to wage a court challenge to the standard for coal- and gas-fired power plants.
The August rate is up slightly from July, but still lower than it was a year ago.
Darden Restaurants Inc. struggles to keep pace with a shifting industry, with more people heading to chains such as Chipotle that offer food perceived to be higher quality at relatively cheaper prices.
Dozens wait in line during the wee hours Friday for the Apple Store at the Maine Mall to open.