How many e-cats are in continuous operation today? - 97
How many geographic locations are e-cats running today? - 4
Are there any e-cats running in the US with businesses you own or individuals you trust? - YES
So to recap on this, Rossi is saying that at this moment there are 97 e-cats installed and working accross 4 different countries, with some already installed in the businesses of trusted individuals. The 4 countries are presumably USA (Rossi's Company Leonardo Corp), Italy, Greece and it's anyone's guess what the 4th one is.
Andrea Rossi is the inventor of the e-cat (energy catalyzer). A commercially viable cold fusion technology which is going into full production later this year. If you are new to the story and need some some quick facts on this remarkable technology please watch this video.