  As demand for electric vehicles (EVs) is expanding, meeting the need for
charging infrastructure, especially in urban areas, has become a critical
issue. One method of adding charging stations is to install them at parking
spots. This increases the value of these spots to EV drivers needing to charge
their vehicles. However, there is a cost to constructing these spots and such
spots may preclude drivers not needing to charge from using them, reducing the
parking options for such drivers\color{black}. We look at two models for how
decisions surrounding investment in charging stations on existing parking spots
may be undertaken. First, we analyze two firms who compete over installing
stations under government set mandates or subsidies. Given the cost of
constructing spots and the competitiveness of the markets, we find it is
ambiguous whether setting higher mandates or higher subsidies for spot
construction leads to better aggregate outcomes. Second, we look at a system
operator who faces uncertainty on the size of the EV market. If they are risk
neutral, we find a relatively small change in the uncertainty of the EV market
can lead to large changes in the optimal charging capacity.
