How Tradvolt builds a cost model
Every study on this site follows one discipline: separate what a supplier quoted, what a public source states, what is a scenario assumption, and what is a calculated result. Where an input is not available, it is written down as an open item for the buyer to confirm — it is not filled with an invented number.
Method pages by equipment class
- Landed cost — what sits between a supplier price and a delivered unit.
- Battery and storage TCO — cycling, augmentation and end-of-life.
- Solar PV TCO — yield, degradation and balance of system.
- EV charging TCO — utilisation, grid connection and service life.
What is deliberately excluded
Models do not monetize benefits that the buyer has not quantified — resilience, avoided outage cost, carbon value or brand effects — unless a study says so explicitly and states the basis. They do not assume a certification, a warranty term or a lead time that no document in the study establishes.
How to choose which model applies
Start from the question you are being asked to answer. If it is what the goods cost to have delivered, use landed cost and stop there. If it is what the equipment will cost over its life, add the class that matches the equipment — storage, solar or charging — and note that a hybrid site needs more than one.
All four share the same evidence discipline described on how we model landed cost and total cost of ownership: what is quoted, what is public, what is assumed and what is calculated are kept separate, and an unavailable input is recorded as open rather than filled in.