Three characters, .net, in the X-for-Y form. E4G reads most naturally as energy for growth, or education for girls, and both of those are phrases with real institutional weight behind them.
Energy for growth is standing language in development economics, used by policy institutes working on electrification and industrial development. Education for girls is one of the most funded causes in global philanthropy. Either would find the name already legible to funders and partners.
Commercial readings work too: engineering for gaming, edge for government, efficiency for grids.
The .net is flexible enough to carry any of them. It reads as a platform or network, which suits a coalition, a consortium, or a technical service equally well, and it keeps a three-character address reachable.
Three characters, working convention, fixed supply. The name is listed for sale.
Enquiries welcome.