How the numbers we publish are produced

Computed as (self-consumed energy + exported energy) times the grid emission factor. Both parts are credited: self-consumed kWh displace grid imports and avoid emissions too.

We do not use generation minus consumption. That subtraction discards self-consumption and understates the result.

The value is not entered by an operator: the database derives it from the reading and the factor for the period year. A hand-typed number would have no provenance.

Every attestation on the transparency page publishes its canonical payload: the exact text, byte for byte, whose sha256 was anchored in the contract. Verifying it requires trusting nothing from us: copy the payload, compute its sha256, and compare it with the hash on the page and with the one the contract emitted on Basescan.

In a terminal: printf '%s' <payload> | shasum -a 256. If the text contains a single quote, save it to a file with no trailing newline and run shasum -a 256 on that file. The result has to match character for character: any added space or line break changes the hash, which is why the copy button hands over the exact original text.

An attestation without a published payload is one whose original version the platform can no longer reproduce, usually because the data was corrected after anchoring. We would rather say that than hide it: the old hash still proves what was anchored at the time, not what the page shows today.

And as the previous section explains, a matching hash proves the integrity of the text, not the truth of the measurements: false data hashes just as well as true data.

A certificate is a measurement act converted into money: a joint measurement recorded in an acta, signed by the works inspection and the contractor technical representative, and approved by the works director.

They are cumulative: the period value is the excess over the previous certificate. We also publish physical progress, because financial progress can be inflated by materials stockpiling and advances without executed work, and physical progress lagging financial progress is the most important early distress signal in Argentine construction. The denominator of financial progress is the work contract value in force, with its source published, not the capital being raised: they are different magnitudes, and dividing by the second compresses the percentage and mutes the comparison. With no contract value loaded, the percentage is not published.

Readings are taken per period with boundaries computed explicitly in UTC-3. Argentina has had no daylight saving since 2009.

A re-read replaces the period rather than adding to it. Inverters can backfill late data for several days depending on the manufacturer, so a period may be corrected after publication.

As an external plausibility reference: annual global horizontal irradiation at the site (Puerto Madryn, -42.77, -65.03) is 1725 kWh/m2 per the European Commission's PVGIS v5.3 (PVGIS-ERA5 database, the only one covering the area) and 1698 kWh/m2 per NASA POWER (ALLSKY_SFC_SW_DWN climatology, 4.6483 kWh/m2 per day). Two independent models that differ by less than 2%. Both queries were made on 2026-07-27 against the public APIs, no key required.

What this allows: judging whether the generation we publish is physically plausible for the location. What it does not allow: turning it into an exact expected production, because that requires the installed capacity, orientation and losses of the real system, engineering data this version of the platform does not record. It is multi-year average climatology, not a forecast and not a promise of generation.