Vattenfall is a Swedish-owned international electricity and heat supplier. In recent years, it has become the fourth-largest generator of electricity and the largest producer of heat in Europe Vattenfall is a public limited company, shares of which are owned by the Swedish government.

We model the impact of bank mergers on loan competition, banks' reserve holdings and aggregate liquidity. Banks compete in a differentiated loan market, hold reserves against liquidity shocks, and refinance in the interbank market. A merger creates an internal money market that induces financial...