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Deumess e.V.

Rudolstadt, Thuringia Reg: R004960 (Vereinsregister) Sign up to see website
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46
Integrity Assessment
Partial transparency
46/100 · methodology

About Deumess e.V.

The DEUMESS e.V. is an interest group and network for more than 200 mostly owner-managed medium-sized and regional companies in the energy and real estate sector. Together, they actively contribute to the energy transition in more than 4.4 million homes by raising and making use of consumption data for heat, electricity and water. They install sensor infrastructure and thus enable consumption transparency, control of building technology and energy flows and the accelerated digitization of the real estate in their region. DEUMESS is the largest association for the digital collection and processing of energy data in Germany. Around one in five dwellings in Germany receive energy services from a member of DEUMESS. Together, the members make an important contribution to making …

Der DEUMESS e.V. ist Interessenvertretung und Netzwerk für über 200 zumeist eigentümergeführte mittelständische und regionale Unternehmen der Energie- und Immobilienbranche. Gemeinsam gestalten sie durch das Erheben und Nutzbarmachen von Verbrauchsdaten für Wärme, Strom und Wasser die Energiewende in mehr als 4,4 Millionen Wohnungen aktiv mit. Sie installieren dazu Sensorik-Infrastruktur und ermöglichen dadurch Verbrauchstransparenz, die Steuerung von Gebäudetechnik und Energieströmen und die beschleunigte Digitalisierung der Immobilien in ihrer Region. DEUMESS ist der mitgliederstärkste Verein für die digitale Erfassung und Verarbeitung energetischer Daten in Deutschland. Rund jede fünfte Wohnung in Deutschland erhält Energiedienstl­eistungen eines Mitgliedes von DEUMESS. Gemeinsam leisten die Mitglieder einen wichtigen Beitrag, Deutschland bis 2045 weitestgehend klimaneutral zu machen.

Translated from German by GiveRadar.

Headquarters
Rudolstadt, Thuringia
Size
micro

Focus areas & reach

· What they work on and where

How it stacks up against peers

· vs. 8 similar community development in Germany
Integrity Assessment This charity: 46
Peer average: 62

Concerns

· None found
No red flags found
Screened for Tax-authority revocation, Open investigations, Governance scandals, Related-party deals, Excessive exec comp.

GiveRadar Analysis

Original analysis from GiveRadar's dataset of comparable organizations

From what GiveRadar has verified so far, Deumess e.V. has a substantially complete profile.

  • GiveRadar has verified financial records for only 1% of community development charities in Germany, and this is one of them. See national comparisons
  • It is one of the better-documented community development charities in Germany GiveRadar currently tracks, because GiveRadar has verified its contact details. Most of those have little verified data on record yet. View this cohort
  • It has more complete contact information than nearly all comparable charities, with a verified website, email, phone and address on record. See national comparisons
GiveRadar has verified
  • government registration
  • financial records
  • disclosed leadership
  • a website
  • a contact email
Not yet verified by GiveRadar
  • a donation page
  • third-party accreditation
  • an owner-submitted profile claim

Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.

Common questions

· Auto-generated from filings + methodology

Deumess e.V. is a registered community development nonprofit based in Rudolstadt, Thuringia, Germany. It is registered with the German Vereinsregister (Association Register). Its registration number is R004960. GiveRadar's Integrity Assessment for the organization is 46/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports €55K in annual revenue.

Deumess e.V.'s official registration number is R004960, as recorded in the national registry of Germany.

Deumess e.V. has a GiveRadar Integrity Assessment of 46/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 46 ('Partial transparency') means some public data is on file but key signals are missing - worth a closer look before donating. For comparison, the average integrity assessment for community development charities in Germany is 62/100.

Deumess e.V. is located in Rudolstadt, Thuringia, Germany.

Based on official tax filings, Deumess e.V. has €55K in annual revenue. Its revenue is below the peer average of €4M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.

Deumess e.V. is classified as a Community Development organization, registered in Germany. By size, it is categorized as a micro organization. It has €55K in annual revenue.

According to GiveRadar's records, Deumess e.V. is registered with the German Vereinsregister (Association Register) and overseen by the local Amtsgericht (district court). GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.

The DEUMESS e.V. is an interest group and network for more than 200 mostly owner-managed medium-sized and regional companies in the energy and real estate sector. Together, they actively contribute to the energy transition in more than 4.4 million homes by raising and making use of consumption data for heat, electricity and water. They install sensor infrastructure and thus enable consumption transparency, control of building technology and energy flows and the accelerated digitization of the real estate in their region. DEUMESS is the largest association for the digital collection and processing of energy data in Germany. Around one in five dwellings in Germany receive energy services from a member of... Deumess e.V. is classified as a community development organization registered in Germany.

Among community development charities registered in Germany: Its annual revenue of €55K is below the peer average of €4M.

Deumess e.V. is a registered nonprofit in Germany. Donations to recognized charitable organizations (gemeinnuetzige Organisationen) are tax-deductible up to 20% of your total income. You will need a donation receipt (Zuwendungsbestaetigung) from the organization for your tax return.

You can verify Deumess e.V.'s charitable status in several ways. First, check the Zuwendungsempfaengerregister (ZER) at https://www.bzst.de/DE/Unternehmen/Zuwendungsempfaengerregister_organisation/zuwendungsempfaengerregister_organisation_node.html - the BZSt maintains this federal register of all organisations eligible to receive tax-deductible donations in Germany. Second, you can look up the association in the Vereinsregister (association register) at the local Amtsgericht (district court) via https://www.handelsregister.de/ - this confirms the legal form, registered address, and board members. Third, check whether the organisation holds the Freistellungsbescheid (tax-exemption notice) from its local Finanzamt - the notice is re-issued every three years and confirms the 'gemeinnuetzig' status under the Abgabenordnung. Legitimate charities publish this on their website or provide it on request.

Contact Deumess e.V. directly for current donation methods. German charities typically accept SEPA bank transfer (Ueberweisung) to the organisation's IBAN, SEPA direct debit (Lastschrift/Einzugsermaechtigung) for recurring donations, PayPal, credit card payments, and online payment processors like Stripe or Mollie. Many German charities use platforms like betterplace.org, GoFundMe, or their own Spendenseite (donation page). International donors can give via SEPA transfer (Germany is in the eurozone) or PayPal. For your donation to be tax-deductible, you need a Zuwendungsbestaetigung (donation receipt) from the organisation - for amounts up to 300 euros, a bank statement showing the transfer is sufficient.

Deumess e.V. is based in Rudolstadt, in the Free State of Thuringia (Thueringen) in central Germany, home to Erfurt and Weimar. Germany is a federation of 16 states (Bundeslaender). Charitable status ('Gemeinnuetzigkeit') is granted by the local Finanzamt and recognised nationwide - the organisation can solicit tax-deductible donations from donors anywhere in Germany.

Annual revenue
€10K-€100K
Source: Bundestag Lobbyregister why this matters
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Taxes

Tax-deductibility for donors

German donations are deductible if Deumess e.V. holds a Freistellungsbescheid (recognition as a charitable purpose) and issues a Zuwendungsbestätigung receipt.

Always confirm tax treatment with the charity directly or your tax advisor before donating.

Leadership

HA
Hartmut M••••••
Board Member

Latest news

From global news sources

No recent news coverage found

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Cause areas in Germany

How many charities work in each area, with this charity's area highlighted.

Community Development this charity 333,723
Education 91,396
Social Services 57,991
Arts & Culture 55,916
Health 33,744
International 29,261
Youth Development 20,117
Environment 16,305
See all cause areas in Germany

Most common causes in Germany

Causes charities work on most, with this charity's causes ticked.

Community Development 66,182
Education 55,923
Foster Care 51,710
Arts & Culture 43,294
Eldercare & Aging 26,255
International Development 15,257
Health 14,436
Disability 13,265

Sources and verification

Registration and legal identity
Bundesanzeiger (German Federal Gazette)
Financial filings
Bundesanzeiger annual disclosures

Data freshness

Last updated
Jun 7, 2026
Registry checked
Jun 7, 2026
Profile completeness
50%

What we know and don't know

Exactly which public data we hold on this charity. Our score reflects transparency, not impact.

On record · 6
  • Financial data · Annual revenue figure on record
  • Named leadership · Lead officer named
  • Government registration · Registered with an official registry
  • Official website · On record
  • Headquarters address · On file
  • Direct contact · Email or phone published
Not available · 5
  • Executive pay
    Top-officer pay not disclosed
  • Mission statement
    No self-published statement of purpose
  • Programs & activities
    No named programs listed by the charity
  • Tax-deductibility
    Not verified
  • Founding date
    Year founded not on file

Methodology

GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.

Read full methodology

Are you the owner or a board member?

If you represent this organization and want to correct or update its data, you can claim this listing to edit details yourself, or email [email protected] with the correct information. We review every request and respond within 30 days.

Quick facts about Deumess e.V.

What is Deumess e.V.?
Deumess e.V. is a community development nonprofit organization based in Rudolstadt, Germany. The DEUMESS e.V. is an interest group and network for more than 200 mostly owner-managed medium-sized and regional companies in the energy and real estate sector. Together, they actively contribute to the energy transition in more than 4.4 million homes by raising and making use of consumption data for heat, electricity and water. They install sensor infrastructure and thus enable consumption transparency, control of building technology and energy flows and the accelerated digitization of the real estate in their region. DEUMESS is the largest association for the digital collection and processing of energy data in Germany. Around one in five dwellings in Germany receive energy services from a member of DEUMESS. Together, the members make an important contribution to making Germany as climate neutral as far as possible by 2045.
Who leads Deumess e.V.?
Hartmut Michels serves as Board Member.
Where is Deumess e.V. located?
Headquartered in Rudolstadt, Thuringia, Germany.
What is Deumess e.V.'s annual budget?
Annual revenue is approximately €10K-€100K.
Is Deumess e.V. trustworthy?
Deumess e.V. has a GiveRadar Integrity Assessment of 46 out of 100 (Partial transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
What is Deumess e.V.'s registration number?
Registration: R004960 (Germany).
What is Deumess e.V.'s website?
https://www.deumess.de
Are donations to Deumess e.V. tax-deductible?
Donations may be tax-deductible for residents of Germany under local rules. US donors should check whether the charity has an equivalency-determination letter or a US-based fiscal sponsor before claiming a deduction.