How RESOL GmbH CEO Rudolf Pfeil grew to $7M revenue with a 18 person team in 2024.
Nature as ideal Solar thermal technology taps the infinite energy resources of the sun to face the ecological responsibility of tomorrow. The RESOL product range includes a range of high-class solar thermal and heating controllers as well as a broad variety of accessories for the efficient use of energy. All RESOL products are future-oriented, sophisticated and unique in their design. Just like our ideal: nature!
Strong roots to grow Ever since the founding of RESOL in 1977, Rudolf Pfeil has been managing the enterprise. What began as a pioneer company in the solar business, developed into the market leader with 150 employees and a worldwide network of distributors. Today, RESOL products optimise the efficient use of more than 3 million systems in over 60 countries. Traditional values such as honesty, respect and responsibility are the basis for success and continuity in all external and internal relations.
We set standards Sustainable growth prospers on a solid basis
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RESOL GmbH Revenue
In 2024, RESOL GmbH's revenue reached $7M. The company previously reported $2.7M in 2024. Since its launch in 1977, RESOL GmbH has shown consistent revenue growth.
| Year | Milestone | Quote |
|---|---|---|
| 2024 | RESOL GmbH Hit $7m revenue in November 2024 | |
| 2024 | RESOL GmbH Hit $2.7m revenue in October 2024 | |
| 2023 | RESOL GmbH Hit $1.3m revenue in December 2023 | |
| 2021 | RESOL GmbH Hit $937.4k revenue in April 2021 | |
| 1977 | Launched with $0 revenue |
RESOL GmbH Valuation, Funding Rounds
RESOL GmbH is a bootstrapped SaaS startup. Founded in 1977, RESOL GmbH has grown to $7M in revenue without raising any venture capital or outside funding.
As a self-funded SaaS company, RESOL GmbH has built its business with no outside investment.
| Year | Round | Amount | Valuation | % Sold | Quote |
|---|
Founder / CEO
Rudolf Pfeil
CEO / RESOL - Elektronische Regelungen GmbH, Germany sine 1997 to present. Solar pioneer and general manager of RESOL, Mr. Rudolf Pfeil, saw an opportunity in those early years. Solidarity with the environment and work in line with nature are basic principles for the development of the first RESOL solar controllers. RESOL-products optimise the control of about 800.000 active solar heating systems world-wide. Due to high product demands on functionality and design, RESOL controllers proved in solar thermal, heating and air-conditioning systems. Impressive proofs are the award �Roter Punktì in the competition �Design-Innovation 98ì as well as the �iF Design Awardì of the Industrie Forum Design Hannover. Even in 2003 efficiency and aesthetics continue to be decisiv!e principles for RESOL products. The harmonic and clear line, RESOL presents the new series DeltaSol� which persuades by a perfect combination of functionality, price and design, an easy operation as well as the reduction to the essential take centre stage again.
Q&A
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Customers
We do not have customer count information for RESOL GmbH yet.
RESOL GmbH Employees & Team Size
RESOL GmbH employs approximately 18 people as of 2026, including 4 sales reps that carry a quota.
| Year | Milestone |
|---|---|
| 2024 | Reached 18 employees (October 2024) |
| 2023 | Reached 18 employees (December 2023) |
| 2022 | Reached 15 employees (December 2022) |
| 2021 | Reached 15 employees (December 2021) |
| 2021 | Reached 12 employees (April 2021) |
Frequently Asked Questions about RESOL GmbH
What is RESOL GmbH's revenue?
RESOL GmbH generates $7M in revenue.
Who founded RESOL GmbH?
RESOL GmbH was founded by Rudolf Pfeil.
Who is the CEO of RESOL GmbH?
The CEO of RESOL GmbH is Rudolf Pfeil.
How much funding does RESOL GmbH have?
RESOL GmbH raised $0.
How many employees does RESOL GmbH have?
RESOL GmbH has 18 employees.
Where is RESOL GmbH headquarters?
RESOL GmbH is headquartered in Hattingen, Germany.
Data and Sources
All figures on this page are taken directly from interviews or are estimates from public sources and proprietary models. Not financial advice. Read full disclaimer.
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