Where do VoltCast electricity prices come from?

European day-ahead markets

Sources used across the supported European zones include ENTSO-E, Energy-Charts / Fraunhofer ISE, SMARD and OMIE. The source attribution on the individual price page identifies the data used for that zone. The next day’s values appear after publication; delays can occur.

Great Britain and US hubs

Great Britain uses day-ahead market data available through NESO. US pages show NYISO, CAISO or ERCOT wholesale hub prices. A hub price is not a household retail tariff and may not match your electricity plan.

Australia

Australia’s NEM is a real-time market operated by AEMO. Tomorrow’s figures are estimates; they are not final day-ahead household electricity prices.

Units, time zones and freshness

Read the unit, local time zone, price date and retrieval time on each price page. Taxes, network fees and retailer margins are excluded unless the page explicitly says otherwise. If the date is old or data is unavailable, do not treat it as today’s confirmed price.

Published prices versus outlooks

Published values are labelled separately from estimates for later periods. An estimate can change. These pages explain the meaning and origin of the displayed information, not a guaranteed saving or a forecast accuracy claim.

Primary sources

• ENTSO-E Transparency Platform
• Energy-Charts / Fraunhofer ISE
• SMARD / Bundesnetzagentur
• OMIE
• NESO Data Portal
• NYISO
• CAISO OASIS
• ERCOT
• AEMO