SteamaCo, Jackalope, and Nimbus

ISV-TRD-002 · technical report · draft · 1 Oct 2026 · ISV Technology Committee · web and Companies House pass, plus workshop notes already on this wiki

What this pass can say The public SteamaCo site says Jackalope Limited operates it and trades as SteamaCo. Nimbus AMI is the product that site describes as the cloud head-end. A separate UK company, STEAMA COMPANY LIMITED, is in administration. This pass did not read a deed that moves assets from one company to the other.

Two UK companies

These rows are the filings and the website footer. They are not a statement that one company bought the other.

	Jackalope Limited	STEAMA COMPANY LIMITED
Company number	17120801	08081185
Incorporated	27 March 2026	24 May 2012
Status read this pass	Active	In Administration
Registered office	83 Baker Street, London, W1U 6AG	Stamford House, Northenden Road, Sale, M33 2DH
SIC	27120 — manufacture of electricity distribution and control apparatus	62012 — business and domestic software development
Previous registered name	None on the overview	ACCESS GLOBAL LIMITED, 24 May 2012 – 22 Jan 2015
On steama.co	Site operator. Trades as SteamaCo. Same number in the footer of the terms, the acceptable-use policy, and the Nimbus page.	Not named on those pages.

Companies House overviews read 1 Oct 2026. SteamaCo terms: steama.co/terms-of-website-use. Acceptable use: steama.co/acceptable-use-policy.

Jackalope’s first accounts are due for the period to 31 March 2027. This pass did not read an administration appointment date for 08081185, and it did not read a share purchase, a hive-out, or a brand licence between the two numbers.

Nimbus, as the product site describes it

Nimbus AMI is the name on the product page. The page calls it a cloud meter-data and head-end system: automatic meter reads, remote control, over-the-air firmware, STS token delivery, mobile money and other payments, tariffs including time of use, and an encrypted ledger of payments and usage. It says the platform is interoperable with DLMS/COSEM meters, other head-ends, STS vending, and ERP or CMS systems. The same footer names company 17120801.

The off-grid platform page places a data concentrator between Savi meters and Nimbus. The Savi page says those meters work with Nimbus, take STS and mobile money, and can use GSM or a mesh via the concentrator, with AES-128 on the link. Those are product claims. This wiki still has no public Savi interface-control document. The vendor study scores Nimbus interoperability as a marketed head-end claim, not an open meter ICD.

Where Nimbus sits on this wiki

Vendor study — SteamaCo row: Nimbus AMI + Savi, REST API behind a customer login, MPM plugin sync. Lead line: no public developer API for Nimbus.
Roadmap — revenue row is Savi STS plus Nimbus vending. Operational visibility: Nimbus is AMI-class, and no public meter ICD was in that pass.
Solutions map — SteamaCo track.
11 Aug 2026 notes — Nimbus is the SteamaCo peer of ThunderCloud under A2EI Open Metering Infrastructure. That note calls the token key a universal Security Group Code.
Day 2 morning — the room used Supply Group Code, which is the STS name. Same morning: after mini-grid development stopped in 2021, Nimbus was described as a pass-through, with PowerGen named as a customer that built above it. That is a room statement. This pass did not match it to a SteamaCo announcement.
TC 2.0 report — the SparkMeter / GroundBolt side of the same Open Metering Infrastructure layer. Nimbus is the other head-end in that pair, and it is not open source in any page read here.
DLMS/COSEM — the object model Nimbus says it can speak. A brochure line is not a certificate.

Nearby public event, not this company change

On 4 November 2024 a press release said SteamaCo merged with Shyft Power Solutions, with Nimbus AMI named as SteamaCo’s flagship and FlexView named as Shyft’s metering product. African Power Platform, reprint of that release. Jackalope Limited did not exist yet. That release is not evidence of the March 2026 incorporation.

Still open

Whether 17120801 holds the Nimbus software, the SteamaCo mark, the meter fleet contracts, or only the website.
The administration start date and the administrator for 08081185.
Whether “Jackalope” is a product name as well as the company name. The pages read here use it only as the legal entity behind the SteamaCo brand.
A public interface-control document for Savi or for a third-party meter on Nimbus.
Which token-key name is the one in the firmware: Supply Group Code, as on Day 2, or Security Group Code, as in the 11 Aug note.