TSD Desalination
TSD Desalination is an Israeli startup developing solar-powered desalination and water-treatment technology.
Last updated August 26, 2026
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Overview
TSD Desalination, also known as Tethys Solar Desalination, is an Israeli startup focused on desalination and water treatment powered directly by solar energy. The company was founded in 2014 and is associated with technology developed by Joshua Altman and Professor Moshe Tshuva at Afeka College of Engineering in Tel Aviv. Ze'ev Emmerich is identified as one of the company's founders. The company's proposition is based on using solar energy as the direct source of power for desalination rather than relying primarily on conventional electricity-intensive systems. Its technology is presented as scalable and environmentally oriented, with the potential to support water production in settings where energy availability, energy cost, or environmental impact are important constraints. TSD has also been described as seeking a cost advantage over reverse osmosis, although the available reference material does not provide independently verified cost figures, deployment volumes, commercial contracts, or operating results. TSD's work sits at the intersection of water infrastructure, renewable energy, and environmental technology. Desalination is particularly relevant to water-stressed regions, but the reference material does not identify specific countries, installations, customers, production capacities, or commercial markets served by the company. It likewise does not establish whether the technology had reached broad commercial deployment or whether the company remained primarily at the startup and development stage. The company received external attention in the late 2010s. Jewish Business News included TSD among 25 Israeli startups to watch in 2017, while CNBC mentioned TSD alongside IDE Technologies in coverage of Israeli high technology. These references indicate visibility within Israel's technology and water-innovation ecosystem, but they do not by themselves establish funding, revenue, valuation, listing status, or long-term operating performance. Publicly available material identifies the core technical concept and several individuals connected with its development and founding, but provides limited information about corporate ownership, headquarters, management succession, product branding, project delivery, financing, or current operating status. TSD Desalination is therefore best characterized as an Israeli water-technology startup whose defining focus is solar-powered desalination and treatment, with its historical profile centered on technology development and early-stage recognition rather than extensively documented commercial operations.
History
TSD Desalination, also identified as Tethys Solar Desalination, was founded in Israel in 2014. Its development history is linked to Afeka College of Engineering in Tel Aviv, where Joshua Altman and Professor Moshe Tshuva developed the underlying solar-powered desalination and water-treatment technology. Ze'ev Emmerich is identified as one of the company's founders. The company's technical concept uses solar energy directly to power desalination and water treatment. This focus distinguishes TSD from approaches that depend principally on grid electricity or other conventional energy inputs. The stated objective is to create a desalination method that can be scaled while reducing environmental impact and potentially lowering costs compared with reverse osmosis. The available material does not provide engineering specifications, plant capacity, field-performance data, comparative cost studies, or details of the precise process configuration, so the technology's performance cannot be assessed further from the supplied sources. TSD's profile reflects Israel's broader strength in water technology and innovation. Desalination is strategically important in water-scarce environments, while solar power offers a possible way to address the energy demands and environmental concerns associated with water treatment. The reference material does not, however, identify named customers, completed facilities, geographic deployments, partnerships, financing rounds, or export markets. It also does not establish whether the company continued operating, changed ownership, or achieved commercial-scale deployment after the period in which it received media attention. In 2017, Jewish Business News named TSD among 25 Israeli startups to watch. CNBC also mentioned the company alongside IDE Technologies in coverage of Israeli high technology. These appearances gave TSD visibility as an emerging water-technology venture, but they were recognition items rather than evidence of a disclosed financial or operational milestone. The documented history therefore centers on the creation of an Israeli startup, the development of direct-solar desalination technology by researchers associated with Afeka College of Engineering, and early media recognition. Information about later corporate development, management, commercialization, and present status remains limited.
Products and positioning
A renewable-energy water-technology startup positioning desalination as scalable, environmentally friendly, and potentially less expensive than reverse osmosis.
Desalination and water treatment
Solar-powered desalination and water-treatment technology
TSD's core offering is a technology intended to use solar energy directly for desalination and water treatment. The company presents the approach as scalable and environmentally friendly, with a potential cost advantage over reverse osmosis. The available reference material does not specify the process design, throughput, energy metrics, commercial installations, or productized system names.
Recent events
- 2017
TSD Desalination included among Israeli startups to watch[1]
Other
Jewish Business News listed TSD Desalination among 25 Israeli startups to watch, highlighting the company within Israel's emerging technology sector.
TSD Desalination mentioned in CNBC coverage of Israeli high technology[1]
Other
CNBC referenced TSD Desalination alongside IDE Technologies in a review of Israeli high-tech and water-related innovation.
Sources1 sources
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