BP said renewables will struggle to keep pace with growing demand for energy especially for power in Asia. According to the outlook report: "The rapid growth of renewables currently depends on policy support in most markets, as renewables tend to be more expensive than coal or gas-fired power. As renewables grow in volume, the burden of this policy support can become a constraint on growth. To maintain rapid growth, the costs of renewable power need to keep falling, reducing the subsidy required per unit of power."