(CNN) -- Football's new Financial Fair Play rules have got some of the world's biggest clubs worried. Facing the prospect of being punished with heavy fines and barred from European competition, they are desperate to make sure that generated revenues are equal or greater than expenditure. Barcelona was one of the first to address balance sheet deficits when it allowed its first shirt sponsorship in 111 years, agreeing a $185 million deal with the Qatar Foundation in late 2010. More recently European champion Chelsea, bankrolled since 2004 by Russian billionaire Roman Abramovich, signed a deal with energy giant Gazprom. One Turkish team has even gone down the surreal route of building a hydroelectric plant in a bid to raise revenue.
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Trabzonspor to build a hydroelectric plant in a bid to raise extra revenue
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Turkish club believes $50 million project will help bring in $10 million a year
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Teams across Europe looking at ways to raise extra revenue through sponsors
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Clubs submit accounts for Financial Fair Play for first time in 2013-14 season
"Similarly, UEFA will also have to consider at the appropriate time whether @placeholder's innovative plan to build an energy power plant to boost club revenues would actually fall within what would be classed as relevant revenues for FFP calculations.