LONDON — Even as China’s economy begins to cool, its hunger for energy is still climbing.

So also is its capacity to generate power from multiple sources, ranging from coal and nuclear to wind, solar and hydroelectric.

Those trends look similar across Asia, where soaring energy needs are outpacing the expansion of climate-friendly renewable power.

More than $250 billion a year is expected to be poured into the construction of renewable energy production in Asia, representing two-thirds of the region’s total power investment, according to Bloomberg New Energy Finance, an analysis and consulting firm. By 2030, the firm projects that carbon-free sources will provide a third of the region’s electricity, with solar the biggest contributor.

Yet the use of fossil fuels like coal and oil is growing too, meaning Asia’s emissions of climate-warming gases are also on an upward trend.