includes retrofitting existing buildings such as the Empire State Building and working on maximizing efficiency in new construction such as the Burj Khalifa in Dubai. Building Technologies & Solutions is the company's longest-running business unit, dating to 1885 when Johnson founded the Johnson Electric Service Company after patenting the electric thermostat in 1883. As of 2012, the business unit operated from 700 branch offices in more than 150 countries. Johnson Controls was one of the defendants in a multimillion-dollar federal court lawsuit in San Juan, Puerto Rico in a case where 98 people perished and 140 were injured in a fire at the DuPont Plaza Hotel and its casino on New Year's Eve, 31 December 1986. The plaintiffs claimed that Johnson Controls sold and installed an energy management system that failed to give early warning of the fire. After nine months of trial, the company and its energy management system were absolved of blame when the court issued a directed verdict. When this trial was completed the plaintiffs had accumulated approximately $220,908,549.00 in damages as a result of various settlements and a jury verdict against some other defendants. Former business units Power Solutions This unit was sold to Brookfield Business Partners and re-made into a new company, Clarios, as of 1 May 2019. The Power Solutions business unit designs and manufactures automotive batteries for passenger cars, heavy and light duty trucks, utility vehicles, motorcycles, golf carts and boats. It supplies more than one third of the world's lead-acid batteries to automakers and aftermarket retailers including Wal-Mart, Sears, Toyota, and BMW. Lead acid battery brands produced under this business unit include Continental, OPTIMA, Heliar, LTH, Delkor and VARTA automotive batteries. This part of the company also manufactures Lithium-ion cells and complete battery systems to power hybrid and electric vehicles such as the Ford Fusion and Daimler's S-Class 400. Additionally, it manufactures Absorbent Glass Matt (AGM) and Enhanced Flooded Batteries (EFB) batteries to power Start-Stop vehicles such as the Chevy Malibu and Ford Fusion. As of 2012, the business unit operated from 60 locations worldwide. On 13 November 2018 Johnson Controls agrees to sell its Power Solutions Division to Brookfield Business Partners. Automotive Experience This business unit was spun off into a new company named Adient on 31 October 2016. Global WorkPlace Solutions The Global WorkPlace Solutions business unit provides outsourced facilities management services globally. It also manages corporate real estate on