Carla Villalba

External shocks—ranging from commodity-price spikes, wars, and pandemics to foreign monetary tightening and sudden stops of capital—pose immediate and diverse challenges for central banks. The appropriate response depends on the shock’s nature (demand, supply, financial, or external liquidity), its persistence, and the economy’s structural characteristics. This article outlines practical tools, strategic choices, case evidence, and trade-offs central banks face when shocks originate beyond national borders.Identifying external shocks and their policy repercussionsDemand shocks: Sharp contractions in global demand cut export earnings and weaken domestic production. Policy priorities typically pivot to sustaining economic momentum through rate reductions, ample liquidity, and targeted fiscal…

The transition from fossil fuels to low‑carbon energy systems is neither guaranteed nor consistent, as each nation advances at its own pace due to a multifaceted blend of economics, institutions, resources, technology, politics and historical context, and recognizing how these factors interact clarifies why some countries accelerate renewable adoption while others proceed slowly even when climate and economic benefits are evident.Key forces that accelerate or hinder transitionsEconomics and cost structures: As wind and solar expenses have declined, renewables now rival conventional power in numerous markets, yet total deployment costs still hinge on local pricing, taxation, and above all the cost…