90 per cent of Jamaica's energy currently comes from imported petroleum, leaving the country vulnerable to external shocks. Improving energy efficiency and increasing the supply of renewable energy are vital to greening Jamaica's economy and making it more resilient, according to a new study released. The Green Economy Scoping Study for Jamaica focuses on greening of the five key economic sectors: agriculture, tourism, construction, energy and water and sewerage, which account for more than 22 per cent of the country's GDP and more than 33 per cent of its labour force.