High-end electric car maker Tesla Motors is building one of its Supercharger stations at the Big Y World Class Market here. The charging stations are part of what Tesla calls the most convenient and extensive network of electric auto charging stations. In an email, Tesla spokeswoman Sonja Koch said the chargers are capable of providing up to 120 kilowatts of power and replenishing 150 miles of range in 30 minutes. The Lee site will be Tesla's second area charger. One opened in February at The Riverdale shops, 935 Riverdale St., West Springfield.