This idea (already implemented by many parks) posted on the City Parks Blog, is a good one, which, in addition to the urban park usage benefits, also increases public safety in and around the lighted park.
“If not enough parkland can be amassed in dense cities by using the three physical dimensions, there is always a fourth dimension: time.
“Cities are finding that, through the use of technology, the time that parks are available to the citizenry can be extended. For sports and other recreational activities, buying time can literally be the equivalent of buying land.
“The two principal time-extending approaches utilize sports field lights and artificial playing surfaces (synthetic turf). Both are growing in importance in crowded environments.
“Lighting has the longer history, and most cities already have numerous lit facilities, including tennis and basketball courts and baseball, football, and soccer fields. Oakland has seventeen lit fields and a policy that all new fields will include lights. Atlanta has forty-four. Miami, which has an extreme park shortage plus a 365-days-per-year playing season (and which, during the summer, is much more pleasant at night) illuminates almost everything: twenty-six baseball diamonds; eleven soccer, six football, and five combination fields; and even one cricket pitch. On the other end of the climate spectrum, Minneapolis lights a golf course for nighttime cross-country skiing in the snows of winter.
“Because of lights, usable playing time can be extended by about two hours in the height of summer and up to five hours in the depth of winter. (Most park agencies have an outdoor nighttime sports curfew of 10:00 or 10:30 p.m.) Even ruling out the very coldest months, the average city might pick up almost 1,000 hours of extra sports playing time for every lit field.
“And, despite the energy crunch, night lighting is still economical in comparison to land acquisition–at least wherever land is expensive. Installing an illumination system on a field costs about $150,000 (or half that for tennis or basketball), to which must be added an hourly operating cost from about $5 to $20, depending on electricity rates in each city. Most cities tend to reserve the lit fields for permitted high school and league competitions, although they allow pick-up games at other times. Some allow free use, others don’t. Miami charges $10 per hour, Atlanta has a sliding scale all the way up to $71 per hour, depending whether teams are nonprofit and whether they are composed of city or non-city residents. The lights have a variety of operating systems, from old-fashioned manual control by onsite custodians to the latest in cellphone-activated, passcode-protected remote electronic management.”