Swedish krona (SEK) in a grant and SEK 1 billion in a loan to help finance the project. The company was also allowed to operate a shuttle service from Stockholm C to Arlanda and charge a non-discriminating fee for all other trains using the line. Total investment costs for the project were SEK 6 billion, of which SEK 2 billion was financed through state grants to the Swedish Rail Administration who built the quadruple track along the East Coast Line. The public–private partnership part of the project involved two new tracks at Stockholm C and the Arlanda Line, costing SEK 4.1 billion. Of this, SEK 2.4 billion was financed by the state. In addition, the state held a financial guarantee to Nordea for the X3 trains, should A-Train fail to meets its financial obligations to the bank. A-Train was also granted an interest-free deferral on the payment of the fees at Stockholm C and Arlanda, costing the state SEK 90 million. Of A-Train's capital loan for SEK 2.2 billion, SEK 1.8 billion was borrowed from three state-owned financial institutions: the Swedish National Debt Office, the Swedish Export Credit Corporation and the Nordic Investment Bank. In addition, 20% of the share capital was secured through Vattenfall's equity in the company. The Arlanda Line and the Arlanda Express started operations on 25 November 1999. After the construction was completed, the ownership of the infrastructure was transferred to A-Banan Projekt. However, A-Train is responsible for paying for all maintenance and operating costs of the line. In 2004, A-Train was bought by Macquarie Group, who paid SEK 70 million for the company, in addition to taking over debt worth SEK 330 million. In 2004, the Swedish National Audit Office criticized the process of building and financing the Arlanda Line, and stated that the State had taken more financial risk than the Riksdag had been informed about. It also criticized the Government for giving additional financial support to A-Train in the form of guarantees without informing the Riksdag, and having an unclear management strategy. It also commented that the traffic forecasts during planning were incorrect. The original plans showed an economic benefit of SEK 4 billion. However, because A-Train is free to set its ticket prices as it wishes, the high prices resulted in too few passengers taking the Arlanda Line for it to be of economic benefit to the Swedish community, and the line