Corrections
How to report an error on SolarCostData, what we correct, how corrections are made at the source, and how they are shown.
Reviewed
To report an error, e-mail the SolarCostData Data Desk at [email protected] with the page URL, what looks wrong and, if you can, a link to the primary source. We check every report against the original source, not against another website, and correct what does not match.
What we correct
- Wrong facts in our text: a date, a capacity, a rule or any other statement in a market note, guide, glossary entry or reference page that does not match its primary source.
- Wrong or mislabelled figures: a number shown with the wrong unit, interval, time zone, currency, badge or data vintage, or a calculation we got wrong.
- Wrong attribution: a figure credited to the wrong source, or a missing licence notice.
- Broken source links: a citation that no longer leads to the source it names.
What is not a correction
Operators publish provisional data and revise it later. When an operator changes a figure, our pages follow the revised value and keep a revision history; that is a data revision, not a correction by us. A figure that is paused because its source has stopped publishing is also not an error; the page says so and shows the last value with its time.
If we disagree with a report, we reply and explain why, with the source we relied on.
How corrections are made
We fix errors at the source: the data file, the source list or the code that builds the page. That way a corrected figure cannot reappear the next time the page is rebuilt. Where a figure was produced by an automated check that should have caught the error, we also fix or add the check.
How corrections are shown
Corrections to facts or figures are recorded on this page with the date, the pages affected, what was wrong and what changed. The page itself shows an updated modified date only when its text changes. We do not silently rewrite published statements.
Corrections log
2026-09-19
- U.S. average denominator on electricity rates by state (page since removed). The “% vs US average” column divided by 18.30¢, while EIA’s June 2026 U.S. total was 18.34¢. Fixed: the denominator is read from the EIA data file, and the CSV column is named accordingly.
- Net metering source links. 30 of 52 rows on the net metering table (page since removed) had an empty source link. Fixed: rows without a primary utility commission or utility URL on file link to the DSIRE state program list; a primary URL replaces it as each is verified.
Earlier entries concerned pages that are no longer published on this site and are not repeated here.