Last updated 2026-07-23
- Raised Undisclosed Round led by ExitValley, Oct 2017
Total raised
—
Last: Undisclosed Round 2017-11
Stage
Mature
Founded
2014
Headcount
4
HQ
Tel Aviv, Israel
Sector
Energy Tech
About
Tethys Solar Desalination (TSD) is an Israeli cleantech startup founded in 2014, specializing in modular, off-grid solar-powered water purification and desalination systems. The company utilizes a patented solar thermal technology that directly uses sunlight to evaporate and condense water, significantly reducing energy costs compared to traditional reverse osmosis methods. Their scalable modules can produce between 0.05 m³ and 10,000 m³ of fresh water per day, suitable for various applications including farms, factories, hotels, communities, and disaster relief. TSD's technology is designed to be low-cost, environmentally friendly, and uses recyclable materials with a plug-and-play setup.
Funding history · 1 round · — total
2017-10
Undisclosed Round
Undisclosed
★ ExitValley
Headcount over time
From 6 (2018-09) to 4 (2025-10) · -2 (-33%) · 16 points · source: Finder history + radar grounding
Q&A
- What is Tethys Solar Desalination's primary business?
- Tethys Solar Desalination (TSD) is an Israeli startup specializing in solar-powered desalination technology, offering scalable and environmentally friendly water treatment plants.
- When was Tethys Solar Desalination founded?
- Tethys Solar Desalination was founded in September 2014.
- How many employees does Tethys Solar Desalination currently have?
- Tethys Solar Desalination has 1-10 employees.
- What is the core technology behind Tethys Solar Desalination's system?
- The core of Tethys Solar Desalination's system is a modular design that uses solar heat to evaporate water and then condenses the purified vapor, significantly reducing energy consumption compared to conventional desalination.
- What is the daily water processing capacity of Tethys Solar Desalination's system?
- Tethys Solar Desalination's system can process up to 10,000 cubic meters of water per day.
- In which sector is Tethys Solar Desalination primarily classified?
- Tethys Solar Desalination is primarily classified in the Energy Tech sector.
- Which investor participated in Tethys Solar Desalination's funding round in November 2017?
- ExitValley participated in Tethys Solar Desalination's funding round in November 2017.
- What are the target customer segments for Tethys Solar Desalination?
- Tethys Solar Desalination targets customers in Energy, Utilities & Waste Management, specifically Utilities and Water Utilities.
Team · 4
Zeev Emmerich
Founder · Co-founder
Moshe Tshuva
Founder · Co-founder
Joshua Altman
Founder · Co-founder
Gil Toren
Founder · Co-founder
Sectors & technology
Primary sector
Energy Tech
Sub-sectors
Energy TechEnergy Production & SourcesClimate TechEnergy TransitionEco-Efficient Energy UsageSustainable Water SolutionsWater for Industry & Residential Uses
Target customers
Energy, Utilities & Waste ManagementUtilitiesWater Utilities
Business model
B2BB2G
Highlights
Verified
Tags
sustainable-water-systemsenergy-usagewater-treatmentdesalinationsolar-energywaterclimate-techagtechirrigation-and-water-managementmanufacturing-facilitiesresidential-sitesagricultureoff-grid
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
External links
| Website | tethysdesal.com |
|---|---|
| linkedin.com/company/5894756 | |
| facebook.com/tsddesalination | |
| YouTube | youtube.com/channel/UCIuiXzxMfABNE_RuId8Ypew |
Identifiers & details
| Legal name | TSD Desalination Ltd. |
|---|---|
| Founded | 2014 |
| Employees (exact) | 4 |
Radar intelligence
Web history (Wayback)
| Domain | tethysdesal.com |
|---|
Certificate / subdomain footprint
| Subdomains | 3 |
|---|
Israeli Companies Registrar (רשם החברות / ICA)
| Registrar # (ח.פ.) | 515126399 |
|---|---|
| Status | פעילה |
| Corp type | ישראלית חברה פרטית |
| Incorporated | 2014-09-14 |
| Purpose | לעסוק בכל עיסוק חוקי |
| Liability | מוגבלת |
| In violation (unfiled) | yes |
| Last annual report | 2025 |
| Active charges / liens | 0 |
| Registry events | 1 — violation (1) |
| Registered address | הברזל 24 תל אביב - יפו |
Recent registry events
| Date | Event |
|---|---|
| 2026-06-25 | עדכון הפרה |