About SolarCostData

SolarCostData is published by the SolarCostData Data Desk. The site shows near-real-time electricity prices and grid data from official operators, through The World Electricity Clock and its market pages, including U.S. grid regions reported to the U.S. Energy Information Administration (EIA).

What the site does

The World Electricity Clock and its pages bring together public data from grid operators and market bodies:

• Market pages for Great Britain, Denmark (DK1 and DK2), the Australian National Electricity Market regions, Taiwan and U.S. regions reported to the EIA’s hourly grid survey (EIA-930).
• Cheapest-hours pages for the Danish zones and the NEM regions, with Danish-language electricity price pages (elpriser) for Denmark.
• Negative prices and highs, showing where wholesale prices are below zero and the most extreme values in our own data window.

Every live figure carries a badge, Metered, Derived or Estimated, and an “as of” time. If a source stops publishing, the page says the figure is paused and shows the last value with its time; it does not fill the gap with a guess. The methodology explains each source, interval and badge.

Where the data comes from

We publish only data whose licence or terms allow commercial redistribution, and we show the attribution each source requires. Current sources include Elexon (Great Britain), Energinet’s Energi Data Service (Denmark), the Australian Energy Market Operator (AEMO), Taiwan Power Company via data.gov.tw, and the U.S. Energy Information Administration. Exchange rates come from Frankfurter, based on European Central Bank reference rates. Each page names its source next to the figures it supports.

Editorial and data responsibility

The SolarCostData Data Desk writes and maintains all editorial text on the site, including the market notes, guides, glossary and methodology, and is responsible for how data is collected, checked and displayed. Facts in our notes are taken from primary sources, such as operators, regulators, governments and exchanges, and are linked where they appear.

The data itself belongs to the operators that publish it. Operators revise their figures, so values on this site are provisional and can change after first publication. We keep a revision history rather than overwriting values silently. We make no forecasts of our own; the only forward-looking figures are AEMO’s published pre-dispatch prices on the Australian cheapest-hours pages, labelled “forecast by AEMO”.

Nothing on this site is trading, investment, financial or operational advice. See the terms of use.

Independence

The Data Desk is independent of the grid operators, markets, utilities and energy companies we report on. No operator or company has reviewed or endorsed these pages, and our use of their data does not imply official status or approval.

The site is funded by display advertising. Google AdSense is planned and is switched off until the account is approved; when ads run, they are labelled as advertising and do not influence any figure or text. We have no paid placements and no lead forms. How advertising cookies work is explained in the privacy policy.

Accountability

Who publishes this. The site is published by the SolarCostData Data Desk, which signs all editorial output. No individual byline is used.

Sourcing policy. Every figure traces to a named primary source on the page that uses it, with its time or data vintage. Derived and estimated values are labelled as such, and the method behind them is described in the methodology.

Corrections policy. When a reader or our own checks find a factual error, we fix it at the source (the data file or the code that builds the page), republish, and record it on the corrections page with the date, what was wrong and what changed. Editorial pages show a modified date only when their text changes.

How to reach us. Corrections, questions about a data source and privacy requests go through the contact page.