供给的价格弹性有时候也被简称为供给弹性。它表示价格变动1%引起供给量变动的程度。供给价格弹性系数同需求的价格弹性一样，也是由供给量变动的百分比与价格变动的百分比的比值确定。

根据经济学中的供给定理，供给量与价格是同方向变动的，即该商品的价格变动的越大，企业的生产就会随之变化。

供给弹性的大小主要取决于以下两个因素：

Price elasticity of supply (PES or E_s) is a measure used in economics to show the responsiveness, or elasticity, of the quantity supplied of a good or service to a change in its price.

The elasticity is represented in numerical form, and is defined as the percentage change in the quantity supplied divided by the percentage change in price.