Branch 01 · Ghana
Upstream intelligence for West Africa's energy corridor.
Branch 02 · UK
Casti operates as a single group across two complementary practices: upstream and downstream advisory work out of Accra, and petroleum trading and logistics engineering out of London. The two branches share methodology, people and a single commercial point of contact — so clients never have to choose between local fluency and global reach.
Six capability areas, delivered from two offices. Every engagement combines at least two of them — that's the point of running consulting and trading under one roof.
We build the infrastructure beneath energy deals — the models, the permits, the cargoes, the contracts — so that operators can focus on what they drill and ship.
Founded as a regional consultancy and extended into a full trading desk, Casti today sits at the intersection of technical advisory and physical commodity flows. The firm serves independent operators, state-owned enterprises, refiners, traders and logistics providers across three continents.
Our proposition is simple: every brief is owned by a senior principal, every opinion is backed by independent data, and every engagement closes with an implementation — not a deck.