You likely already understand the potential of data to transform your city. But a report from TM Forum suggests another good reason to invest in data: It can give your economy a huge boost. In fact, just some of the data collected by the world’s cities could be worth $7 trillion.

We’ve long believed in the economic power of data. Las Cruces, NM, uses data to give its businesses a competitive advantage. Quebec uses its data to help businesses and job seekers find each other. Palm Springs, CA, used data to make its downtown more attractive to out-of-towners, the people who did most of the shopping there.

But if a tight budget is holding your city back from doing projects like these, the report suggests some may be willing to pay you to unlock your data. Before we get into the tips, here’s a big one: Don’t do anything that jeopardizes the public’s trust! Citizens are watching.

How much is the data worth?
There is tremendous interest in several categories of data: education; transportation; consumer products; electricity; oil and gas; healthcare; and consumer finance.

And just those seven categories could unlock $5 trillion a year in new economic value, either through open data or private partnerships, according to a report by McKinsey. Entrepreneurs are already taking advantage of it.

Will anyone pay you for it?
TM Forum finds reasons to be optimistic, but so far the revenue has been small. The English town of Milton Keynes is already building systems that will allow it to charge for data, but there are a lot of unknowns.

The report finds while the potential is there, until the city starts charging for the data, there’s no way to know what it is actually worth. For its part, Milton Keynes says it doesn’t want to hamper progress by waiting to release data until the systems are in place.

Still, even if nobody pays you directly for the data, the overall economic benefit can be worth it.

What about privacy?
Whatever you do, don’t risk losing the public’s trust. The research finds that people are increasingly aware that their data has value and they don’t want it to be misused.

Case in point: England planned to make some patient records available in a database for researchers. It was for a good cause; the researchers would be using the data to improve health care. There was a huge uproar, however, and the project was scrapped.

Jesse Berst is the chairman of the Smart Cities Council, which helps cities use technology to become more livable, workable and sustainable. Learn about the Council’s second-annual Smart Cities Week, September 27-29 in Washington, D.C., at SmartCitiesWeek.com.

This article was originally published on our sister publication American City & County.