Electrolyzer Production

A dataset describing companies involved with electrolyzer production and their reported capacities.

Labels

HydrogenPower

Keywords

Electrolyzer · Manufacturers · Production Capacity

Last released

License

Public Domain

Attribution

Electrolyzer Production dataset. Compiled from company investor relations material, press releases, regulatory filings, trade press and industry trackers; each capacity figure carries its own citation. Figures are company-reported nameplate capacity, not measured output. Hosted in MyCorr, compiled by Claude Opus 5.

Tables 4

31 rows 6 columns 2 links
Description

The physical sites where electrolyzers are manufactured, located in the country where production happens rather than the company's home country. Where capacity is published without naming a site, a per-company placeholder row stands in for the unknown location. Cancelled and never-built projects are not listed as sites.

Columns
facility_slug String Short slug identifying this physical site (or company-wide placeholder). Join key for Capacity Events.
company_slug String FK to Companies.company_slug — which company operates this facility.
facility_name String Display name of the site, e.g. 'Hefei electrolyser plant'.
country String ISO 3166-1 alpha-2 country code of the facility itself — may differ from the company's HQ country.
is_unspecified Boolean True if this row is a per-company placeholder for 'specific site not known' rather than one real physical facility. One such row per company at most, country left null.
notes String Freeform notes.

38 rows 9 columns 2 links
Description

Dated claims about a site's annual electrolyzer manufacturing capacity in gigawatts per year. Each row is one claim at one point in time, so a factory accumulates several rows and its history reads in sequence rather than as a single current number. Status separates capacity that is producing from capacity that is planned, idled, or targeted but abandoned. Figures are nameplate ratings as reported by the company, which can run ahead of actual throughput.

Columns
technology_slug String FK to Technologies.slug. Nullable when an announcement doesn't break capacity out by technology.
capacity_value Float64 The capacity figure itself, GW/yr. Tag units on this column once created.
status String One of: operational / under_construction / announced_target / idled / abandoned_target / decommissioned. 'idled' (added Aug 2026): capacity that physically exists but is not producing — halted, or the owner stopped pursuing new business — while the plant stands and could restart. Prefer over 'decommissioned', which is for capacity permanently retired, closed or sold. 'abandoned_target' (added Aug 2026): a target no longer live, either explicitly withdrawn by the company or whose date has passed unmet. The source note says which. Kept as history rather than deleted — without this value, summing announced_target overstated the pipeline by ~13 of 29.5 GW. For live totals, filter to operational plus announced_target. Idled rows carry capacity_value 0; abandoned targets keep their original figure and are excluded by status instead.
event_type String new_facility / expansion / revision_up / revision_down / target_announced / actual_completion.
announced_date Date When this claim was made public.
effective_date Date When the capacity does/did or is expected to apply. Often absent for announced_target rows.
source String Citation for this specific figure.
source_url String Link to the source, where available.
facility_slugs List<String> List of Facilities.facility_slug this event's capacity_value covers. Usually one slug; multiple when a single reported figure spans several named sites (e.g. a combined multi-country total).

4 rows 10 columns 2 links
Description

The four water-electrolysis technologies used across the industry, with operating temperature and efficiency ranges, characteristic materials and catalysts, and how each trades off cost, maturity and flexibility. Efficiency figures are HHV-basis and system-level rather than stack-level.

Columns
slug String Short technology code (ALK, PEM, AEM, SOEC). Join key for linking to Companies/other tables.
full_name String Full name of the electrolysis technology.
description String One-line summary of the technology's key traits and commercial maturity.
efficiency_min_pct Float64 Lower bound of typical system-level efficiency, HHV basis. See basis_note for caveats.
efficiency_max_pct Float64 Upper bound of typical system-level efficiency, HHV basis. See basis_note for caveats.
temp_min_c Float64 Lower bound of typical operating temperature. See source for citation.
temp_max_c Float64 Upper bound of typical operating temperature. See source for citation.
key_materials String Primary catalyst/electrode and membrane or electrolyte materials used.
source String Citation for where this row's temperature (and efficiency, if noted) range came from.
basis_note String Caveats on measurement basis (e.g. system vs. stack-level efficiency) and how settled the figure is across sources.

24 rows 12 columns 5 links
Description

Organizations that manufacture water electrolyzers for hydrogen production, with headquarters country, the electrolysis technologies they build, ownership type, listing identifiers and website. A few rows are listed parent holding companies that do not build electrolyzers themselves, included so subsidiaries without their own listing can point at the entity whose ticker they trade under.

Columns
company_slug String
company_name String
hq_country String
technologies List<String>
ticker_is_parent Boolean
parent_company_slug String
ownership_type String
notes String
ticker_symbol String Bare exchange ticker symbol, no vendor suffix. Combine with exchange_mic to identify the specific listing.
exchange_mic String ISO 10383 Market Identifier Code for the venue this ticker trades on (e.g. XNYS, XETR, XSHG).
isin String ISO 6166 International Securities Identification Number for the security itself, vendor- and venue-independent. Populated only where verified; blank means not yet confirmed, not that none exists.
website String

Linked datasets

Datasets that join to Electrolyzer Production in the Mycorr graph.