Colombian state-owned oil company Ecopetrol SA (<a href="https://www.nyse.com/quote/XNYS:EC" target="_blank">NYSE:EC</a>) has signed a pact with a local unit of US power generation group AES Corp (<a href="https://www.nyse.com/quote/XNYS:AES" target="_blank">NYSE:AES</a>) to get a stake in the Jemeiwaa Ka'I wind cluster in the northern department of La Guajira, which has a planned capacity of 1,087 MW.