jesse foote is a lighting industry analyst at global research and consultant firm navigant.hering light fixtures, how big of an industry will this be? > >well bill, at navigant research we're projecting this portion of the market to grow quite quickly. our current projections is 17% growth per year bringing it up to $5.3 billion by 2020. > >who are buying these systems? is it usually port authorities and municipal governments? > >those and sometimes utilities. sometimes commercial businesses that are site lighting--lighting their walkways and their parks. > >i mentioned some uses-- airports and parking lots--but what other applications might there be for this kind of data gathering light? > >really anywhere--once you have a network of lighting that provides both power and communications adding additional sensors is relatively cheap and can bring a whole host of information. so things like air quality sensors--if a city has a whole network of those to provide real time information to residents on air quality, on traffic patterns--a whole range of possibilities there. > >i kno

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