How every number is worked out, and what we are unsure about
Some of what is on this site is read straight off a published file. Some of it is worked out. This section separates the two, shows the arithmetic behind anything that is worked out, and says what we currently think is wrong with it.
How the queue data is built, and where it stops being a fact
One row per project, four grades of coordinate, a stated score, and a rule that data which is absent is never invented.
Read it →How we work out capacity market income per site
The third of the four ways a battery earns, and the trap that made our first run more than twice too big.
Read it →How we read what the fleet is doing right now
Two published feeds say different things about the same battery at the same moment. One of them is right. This is which, and why it matters.
Read it →How we estimate what a battery earns trading
Two of the four ways a battery earns are published per site. The third, buying low and selling high, is not published by anyone. This is how we estimate it, and the three things we currently know are wrong with it.
Read it →Three rules we hold ourselves to
Measured and modelled are never mixed. Every figure is one or the other and says which. Anything modelled is labelled an estimate wherever it appears, not only on this page.
Data that is absent is never invented. Where a source is silent the tool says so rather than filling the gap with something plausible.
We publish what is wrong with our own work. Each page here carries its own list of defects. Where that list is short it is because we have not found more yet, not because there are none.
Tell us we are wrong
We would rather be corrected than quoted. If you own one of these assets, trade one, lend against one, or simply think the arithmetic is off, say so and tell us why. Corrections get published, with the source named unless you would rather it was not.
A contact address for this is being set up. Until it is, the fastest route is whoever gave you this link.