Ritter Energie- und Umwelttechnik GmbH & Co. KG
Ritter Energie- und Umwelttechnik GmbH & Co. KG is a German limited partnership (GmbH & Co. KG) registered with the Amtsgericht Stuttgart (District Court of Stuttgart) under registration number HRA 723663. The company was founded on 14 December 1988 and its Handelsregister status is listed as active. Effective 1 January 2025, the entity was renamed Ritter Solartechnik GmbH & Co. KG; it continues to hold the same registration number, HRA 723663, and the same registered office at Kuchenaecker 2, 72135 Dettenhausen, Baden-Wuerttemberg. As a GmbH & Co. KG, its personally liable general partner (Komplementaer) is Ritter Solartechnik Verwaltungs-GmbH, registered under HRB 728496 at the Amtsgericht Stuttgart and based at the same Dettenhausen address.
Ritter Energie- und Umwelttechnik GmbH & Co. KG develops, manufactures and markets vacuum-tube solar thermal collectors and large-format solar thermal systems, sold under the Ritter XL Solar brand, for hot water preparation, heating support, process heat, district and local heat networks, and solar cooling. Its engineers have supplied a number of large-scale German solar thermal installations and continue to develop system technology for solar-supported heat networks.
As part of the January 2025 renaming, the company’s former residential heating business, previously marketed under the Paradigma brand, was combined with ezee Energy GmbH to form a newly established company, Ritter Energie GmbH & Co. KG, based in Geislingen-Binsdorf. Ritter Energie- und Umwelttechnik GmbH & Co. KG, now Ritter Solartechnik GmbH & Co. KG, retained the collector production and OEM business together with the Ritter XL Solar brand, and holds a stake in the newly formed company. The company holds several registered trademarks, including AquaSolar System and related product marks.
- Company fundamentals
- Corporate linkage & group structures
- Digitized company financials
- Firmographics — websites, social profiles, revenue and employee estimates
Shareholders
2
Shareholders of Ritter Energie- und Umwelttechnik GmbH & Co. KG
Two shareholders are disclosed in the company’s ownership records, together accounting for the full disclosed capital interest. Renaissance KG holds a 90% ordinary-share interest, corresponding to a nominal value of EUR 9,900,000, and is recorded as a corporate shareholder. Martha Luise Hoppe-Ritter holds a 10% ordinary-share interest directly, corresponding to a nominal value of EUR 1,100,000, and is recorded as an individual shareholder. Both interests were verified as of 4 September 2026. Independent commercial-register data separately confirms Renaissance GmbH & Co. KG as a registered shareholder of the company, in a filing dated 13 March 2026. The two disclosed holdings account for 100% of the recorded ordinary share capital; no other current or historical shareholders are disclosed in the reviewed sources.
Ultimate beneficial ownership
No verified ultimate beneficial owner is identified in the reviewed sources. Renaissance KG’s 90% holding is a corporate interest, and the natural person or persons who ultimately control Renaissance KG were not confirmed within the available registry and public-filing sources. Martha Luise Hoppe-Ritter’s 10% direct holding is below commonly applied beneficial-ownership disclosure thresholds and is reported here as a disclosed direct shareholding rather than as a determined UBO.
Data availability
Direct shareholder information for this company is available and internally consistent across two independent sources (Full). Beneficial-ownership information tracing control beyond the immediate corporate shareholder, Renaissance KG, is Not found in the reviewed sources.
Sources
- Company registry data, verified 4 September 2026.
- North Data, Ritter Energie- und Umwelttechnik GmbH & Co. KG (Amtsgericht Stuttgart HRA 723663), retrieved 18 September 2026: https://www.northdata.com/Ritter%20Energie-%20und%20Umwelttechnik%20GmbH%20&%20Co.%20KG,%20Dettenhausen/Amtsgericht%20Stuttgart%20HRA%20723663
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Renaissance KG | 90% | Handelsregister (Commercial Register) | |
| Martha Luise Hoppe-Ritter | 10% | Handelsregister (Commercial Register) |
Officers
9
Directors and officers of Ritter Energie- und Umwelttechnik GmbH & Co. KG
The sole managing director (Geschaeftsfuehrer) of the company’s general partner, Ritter Solartechnik Verwaltungs-GmbH, is Matthias Johler, who has held the role alone since 2021. Between October 2018 and the end of 2020, Johler served as co-managing director alongside Moritz Ritter. As a GmbH & Co. KG, the operating limited partnership has no directors of its own; management authority is exercised through the general partner’s managing director. This reflects the company’s own published management page as of the review date; the underlying commercial-register filing date for the current appointment was not separately confirmed, and nationality is not disclosed in the reviewed sources.
Recent officer changes
- Matthias Johler has served as the general partner’s sole managing director since 2021, following the end of a co-managing-director arrangement with Moritz Ritter at the close of 2020. Source: company website.
Data availability
Current officer information is taken from the company’s own published management page and is treated as current-only. Historical appointment and resignation dates from the German commercial register were not independently re-verified for this profile, and prior internally held officer records for this entity could not be confirmed against current filings. Nationality and country of residence are not disclosed in the reviewed sources.
Sources
- Ritter Solartechnik GmbH & Co. KG, "Geschaeftsfuehrung", retrieved 18 September 2026: https://www.ritter-solartechnik.de/geschaeftsfuehrung/
- North Data, Ritter Solartechnik Verwaltungs-GmbH (Amtsgericht Stuttgart HRB 728496), retrieved 18 September 2026: https://www.northdata.com/Ritter%20Solartechnik%20Verwaltungs-GmbH,%20Dettenhausen/Amtsgericht%20Stuttgart%20HRB%20728496
Registry feed — rows exactly as filed with Handelsregister (Commercial Register), including entries the profile above does not cover.
Group Structure
Group structure of Ritter Energie- und Umwelttechnik GmbH & Co. KG
Ritter Energie- und Umwelttechnik GmbH & Co. KG, renamed Ritter Solartechnik GmbH & Co. KG effective 1 January 2025, is part of a verified corporate group. Its immediate parent is Renaissance KG, a corporate shareholder holding a disclosed 90% ordinary-share interest, verified as of 4 September 2026 and independently corroborated by a separate commercial-register filing dated 13 March 2026 identifying Renaissance GmbH & Co. KG (HRA 706702, Amtsgericht Mannheim) as a shareholder. As a GmbH & Co. KG, the company’s personally liable general partner is Ritter Solartechnik Verwaltungs-GmbH (HRB 728496, Amtsgericht Stuttgart), a separate legal entity that exercises management authority but is not itself a capital shareholder. Effective 1 January 2025, the company took a 50% stake in a newly formed entity, Ritter Energie GmbH & Co. KG (HRA 741825, Amtsgericht Stuttgart, based in Geislingen-Binsdorf), formed through the merger of the company’s former Paradigma residential-heating business with ezee Energy GmbH; this relationship is confirmed by the company’s own press announcement and by a commercial-register filing recording the company as a limited partner of the new entity. No further verified subsidiaries were identified within the scope of this review.
Verified corporate relationships
| Entity | Country | Registration number | Relationship | Ownership | Status | Information date |
|---|---|---|---|---|---|---|
| Renaissance KG | Germany | HRA 706702 (Amtsgericht Mannheim) | Immediate parent | 90% (ordinary shares) | Active | 4 September 2026 |
| Ritter Solartechnik Verwaltungs-GmbH | Germany | HRB 728496 (Amtsgericht Stuttgart) | General partner (Komplementaer) | Ownership percentage not disclosed | Active | 18 September 2026 |
| Ritter Energie GmbH & Co. KG | Germany | HRA 741825 (Amtsgericht Stuttgart) | Affiliate (50% stake) | 50% | Active | 1 January 2025 |
Recent structural changes
- 1 January 2025: The company’s Paradigma residential-heating business merged with ezee Energy GmbH to form a newly established company, Ritter Energie GmbH & Co. KG, in which the company holds a 50% stake. Source: company press announcement.
- 1 January 2025: The company itself was renamed from Ritter Energie- und Umwelttechnik GmbH & Co. KG to Ritter Solartechnik GmbH & Co. KG, retaining registration number HRA 723663.
Data availability
Corporate-linkage information for the immediate parent and the general-partner structure is verified and consistent across two independent sources (Partial overall). Ultimate ownership beyond Renaissance KG could not be independently confirmed, and broader group entities appearing in aggregated registry-tree data were not individually verified for this profile and have therefore been excluded.
Sources
- North Data, Ritter Energie- und Umwelttechnik GmbH & Co. KG / Ritter Solartechnik GmbH & Co. KG (Amtsgericht Stuttgart HRA 723663), retrieved 18 September 2026: https://www.northdata.com/Ritter%20Energie-%20und%20Umwelttechnik%20GmbH%20&%20Co.%20KG,%20Dettenhausen/Amtsgericht%20Stuttgart%20HRA%20723663
- North Data, Ritter Energie GmbH & Co. KG (Amtsgericht Stuttgart HRA 741825), retrieved 18 September 2026: https://www.northdata.com/Ritter%20Energie%20GmbH%20&%20Co%C2%B7%20KG,%20Geislingen/Amtsgericht%20Stuttgart%20HRA%20741825
- Ritter Solartechnik GmbH & Co. KG, press release "Fusion und Umfirmierung der Ritter Energie- und Umwelttechnik GmbH & Co. KG", retrieved 18 September 2026: https://www.ritter-solartechnik.de/presse/fusion-und-umfirmierung-der-ritter-energie-und-umwelttechnik-gmbh-co-kg/
Renaissance GmbH & Co. KG
Get complete shareholder and officer records, ultimate beneficial owner resolution, and ongoing ownership monitoring.
Frequently Asked Questions
What does Ritter Energie- und Umwelttechnik GmbH & Co. KG do?
Manufactures vacuum-tube solar thermal collectors and large-format solar thermal systems (Ritter XL Solar brand) for heat networks, hot water and process heat; renamed from Ritter Energie- und Umwelttechnik GmbH & Co. KG to Ritter Solartechnik GmbH & Co. KG on 1 January 2025.
Who owns Ritter Energie- und Umwelttechnik GmbH & Co. KG?
Renaissance KG holds 90%; Martha Luise Hoppe-Ritter holds 10% directly (verified 4 September 2026).
Who is Ritter Energie- und Umwelttechnik GmbH & Co. KG's UBO (Ultimate Beneficial Owner)?
No verified ultimate beneficial owner identified; the natural person(s) controlling 90% shareholder Renaissance KG were not confirmed in reviewed sources.
What is Ritter Energie- und Umwelttechnik GmbH & Co. KG's company registration number?
Ritter Energie- und Umwelttechnik GmbH & Co. KG's registration number is HRA 723663 Stuttgart, filed with Handelsregister (Commercial Register) in Germany. Its current status on the register is active.
Is Ritter Energie- und Umwelttechnik GmbH & Co. KG still an active company?
Ritter Energie- und Umwelttechnik GmbH & Co. KG's status on Handelsregister (Commercial Register) is listed as active.
When was Ritter Energie- und Umwelttechnik GmbH & Co. KG incorporated?
Ritter Energie- und Umwelttechnik GmbH & Co. KG was incorporated on 14 December 1988, according to Handelsregister (Commercial Register).
What is Ritter Energie- und Umwelttechnik GmbH & Co. KG's registered address?
The registered address on file for Ritter Energie- und Umwelttechnik GmbH & Co. KG is Dettenhausen, Germany.
What is Ritter Energie- und Umwelttechnik GmbH & Co. KG's revenue?
Not publicly disclosed in the reviewed sources.
Is Ritter Energie- und Umwelttechnik GmbH & Co. KG listed on a stock exchange?
Not publicly listed; privately held GmbH & Co. KG.
Who are the officers/directors of Ritter Energie- und Umwelttechnik GmbH & Co. KG?
Matthias Johler is sole managing director of general partner Ritter Solartechnik Verwaltungs-GmbH since 2021.
Does Ritter Energie- und Umwelttechnik GmbH & Co. KG have a parent company or subsidiaries?
Immediate parent Renaissance KG (90%); general partner Ritter Solartechnik Verwaltungs-GmbH; holds a 50% stake in Ritter Energie GmbH & Co. KG since 1 January 2025.
Can Zavia monitor changes to Ritter Energie- und Umwelttechnik GmbH & Co. KG's ownership over time?
This profile reflects a point-in-time snapshot from Handelsregister (Commercial Register). Zavia's monitoring API can track changes to Ritter Energie- und Umwelttechnik GmbH & Co. KG's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access Ritter Energie- und Umwelttechnik GmbH & Co. KG's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including Germany, so records like Ritter Energie- und Umwelttechnik GmbH & Co. KG's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Handelsregister (Commercial Register) and was last synced on 18 September 2026.