Give the venture its own box
JERA’s announcement dated 4 August 2025 said that formation of JERA Nex bp was complete and described it as a 50:50 joint venture between JERA and bp. It identified the business as an offshore wind developer, owner and operator. JERA Nex’s launch article also described the equal ownership and offshore wind focus.
Those statements support a simple diagram. Put the two parent groups above a separate box for JERA Nex bp, label each ownership connection 50%, then describe the venture’s business inside its box. A row of names joined by plus signs would not make that relationship explicit.
The reconstruction below is a parent-group overview based on the launch announcement. It deliberately omits intermediate holding entities and project companies. Use this level of detail when the audience needs the overall relationship; use verified entity names and the relevant holding chain when the question requires them.
JERA Nex bp: ownership at parent-group level
JERA Nex bp
Offshore wind developer, owner and operator
The percentages apply to the venture, not to individual wind farms.
Give each kind of connection a clear meaning
Here, the lines mean ownership of the venture. They do not show which parent supplies engineering work, how much funding each contributes or how decisions are approved. The business description belongs inside the venture’s box, where it cannot be mistaken for an obligation assigned to either parent.
If your slide also needs to explain a service agreement or a funding commitment, give that relationship a separate labelled connection. For example, “provides development services” and “owns a stake” describe different relationships even when the same organisation is involved.
Avoid adding extra lines simply to make the diagram look complete. Include the relationships needed to answer the audience’s question, and identify what each line means. An unlabeled arrow between two companies asks the reader to supply that meaning.
Keep venture ownership separate from project ownership
The two 50% labels in this example attach to JERA Nex bp. They do not establish either group’s stake in an individual wind farm. A reader should not have to guess whether a percentage refers to the venture, a project company or a particular asset.
For a project-level presentation, add a separate project-company box only when it helps explain the structure. Put the verified ownership label on the connection to that company. Do not copy a parent-level percentage onto a lower connection to fill a gap in the information.
Use an exact entity name where similar names could cause confusion. If an organisation’s role is to develop, construct, operate or buy output rather than hold equity, describe that role explicitly instead of placing it in an ownership row.
State the date and the level of detail
A short caption can tell the reader how to use the diagram. In this example, “Parent-group view, as announced 4 August 2025” identifies both its scope and the source date. It is a historical reconstruction, not a claim that the structure has been checked for a current transaction.
Before sending your own deck, check that the entity names, ownership labels and status match the documents you are relying on. Keep a proposed structure visibly proposed. Include additional detail when it changes the relationship the audience is being asked to understand.
Send me your partnership or ownership slide and the relationship it needs to explain.