US aerospace and defence conglomerate RTX Corp (<a href="https://www.nyse.com/quote/XNYS:RTX" target="_blank">NYSE:RTX</a>) on Thursday announced its largest renewable energy procurement so far, a deal with a subsidiary of the North American arm of French energy utility group Engie SA (<a href="https://live.euronext.com/en/product/equities/FR0010208488-XPAR" target="_blank">EPA:ENGI</a>).