The results thus obtained demonstrate that biomethane is the most profitable biogas application, and profits increase with the scale of its production.
It is the most profitable business in eastern and central Africa, earning profits of $223.7m in the financial year to the end of March, up 16% on the previous year.
UCAR is the most profitable player in the business, with 14% net profit margins, twice that of competitors.
Although Goldman is the most profitable U.S. broker-dealer, Sprizen said last quarter's profits were weak, with sales off 35% from the previous year.
"The N.F.L. is the most profitable league.
"Subutex is the most profitable drug.
Surprisingly Jennifer Aniston is the most profitable actress.
The show is the most profitable in television, taking in an estimated $200 million a year.
Moreover, the Asia-Pacific region is the most profitable in the air transport sector.
"Dell is the most profitable company in the industry," Mr. Neff said.
And it says Urucu is the most profitable onshore site in Brazil.
