Three characters on the .org, X-for-Y. E4G reads as energy for growth, education for girls, or evidence for government.
Education for girls is one of the most heavily funded causes in international development, with dedicated programmes at every major foundation and multilateral. Energy for growth is standing language in development economics, used by the institutes working on electrification and industrial capacity in lower-income countries.
Evidence for government fits the what-works movement: organisations producing research specifically designed to be used by policymakers.
All three sit squarely in the .org world, and all three would be read correctly by the relevant audience without explanation. That inherited legibility is the real value of a name built on an established convention.
Three characters, fixed inventory, and an extension that signals the right kind of organisation before anyone reads a word of the site.
The name is listed. Enquiries welcome.