Last updated 2026-07-20
- Raised $6.2M Undisclosed Round led by Sonol, Feb 2021
Total raised
$6.2M
Last: Undisclosed Round 2021-03
Stage
Mature
Founded
2013
Headcount
25
HQ
Tel Aviv-Yafo, Israel
Sector
Energy Tech
About
RST Cleantech provides an automated solar panel cleaning system called NightWash™, designed to increase solar energy production and preserve panel warranties. The system uses filtering technologies and advanced water engineering to treat water scaling and corrosion. It is fully automated, has no moving parts, and can be controlled via a mobile app. The company was established in 2013 and has installed over 4,000 projects worldwide, cleaning more than 2,000,000 panels daily.
Funding history · 1 round · $6.2M total
2021-02
Undisclosed Round
$6.2M
★ Sonol★ Israel Canada Tech Investments
Headcount over time
From 6 (2018-12) to 22 (2025-04) · +16 (+267%) · 15 points · source: Finder history + radar grounding
Q&A
- What is RST Cleantech's primary business?
- RST Cleantech specializes in automated solar panel cleaning solutions, offering the NightWash system for brushless, labor-free cleaning controlled via a mobile app.
- When was RST Cleantech founded?
- RST Cleantech was founded in July 2013.
- How much funding has RST Cleantech raised in total?
- RST Cleantech has raised a total of $6.2 million USD.
- When was RST Cleantech's last funding round and who were the investors?
- RST Cleantech's last funding round was in March 2021, with investments from Sonol and Israel Canada Tech Investments.
- What is the employee count for RST Cleantech?
- RST Cleantech has 11-50 employees.
- Where is RST Cleantech's headquarters located?
- RST Cleantech's headquarters is located in Tel Aviv-Yafo, Israel.
- What are the key benefits of RST Cleantech's NightWash system?
- The NightWash system can increase solar panel energy production by up to 30% through regular cleaning, ensuring efficiency, compliance with manufacturers' warranties, and reducing labor hazards.
- Who are the co-founders of RST Cleantech?
- The co-founders of RST Cleantech are Roy Sade, who also serves as CEO, and Shani Bakaliar, who is also the GM.
Team · 1
Roye Sade
Founder · Co-Founder and Sales & Business Development VP
Sectors & technology
Primary sector
Energy Tech
Sub-sectors
Climate TechEnergy TransitionClean Energy GenerationEnergy TechEnergy Production & Sources
Target customers
Real Estate & ConstructionManagementCommercialEnergy, Utilities & Waste ManagementRenewable Energy SystemsSolarGovernment & CityMunicipalities
Business model
B2B
Highlights
Climate Tech
Tags
climate-techresidential-sitescommercial-sitesenergy-savingwaterelectric-utilitieswater-treatmentcleaning-robotphotovoltaicsfiltration-and-purificationsolar-panelsrenewable-energy
Full data — links, identifiers, deals & radar signals (jobs, patents, research, more)
External links
| Website | rst-cleantech.com |
|---|---|
| linkedin.com/company/5258526 | |
| facebook.com/RSTCleanTech | |
| YouTube | youtube.com/channel/UCVpkr76IRpqkiCfWad8MuTQ |
Identifiers & details
| Legal name | RST CleanTech Ltd. |
|---|---|
| Founded | 2013-7 |
| Employees (exact) | 25 |
| Offices | Brazil; Providencia; Spain; Los Angeles |
Radar intelligence
Patents
| EPO | 3 |
|---|
Web history (Wayback)
| Domain | rst-cleantech.com |
|---|
Certificate / subdomain footprint
| Subdomains | 2 |
|---|
Israeli Companies Registrar (רשם החברות / ICA)
| Registrar # (ח.פ.) | 514947456 |
|---|---|
| Status | פעילה |
| Corp type | ישראלית חברה פרטית |
| Incorporated | 2013-07-17 |
| Purpose | לעסוק בכל עיסוק חוקי |
| Liability | מוגבלת |
| In violation (unfiled) | no |
| Last annual report | 2025 |
| Active charges / liens | 0 |
| Registry events | 9 — people (2), shares_capital (1), other (1), charge (5) |
| Registered address | קציר 1 שדה אילן |
Recent registry events
| Date | Event |
|---|---|
| 2026-03-31 | עדכון דירקטורים-הסרת דירקטור |
| 2026-03-31 | העברת מניות |
| 2026-03-31 | עדכון בעלי תפקידים |
| 2025-12-29 | עדכון כתובת ו/או מען דיגיטלי |
| 2025-09-17 | סילוק שעבוד |
| 2025-09-14 | סילוק שעבוד |
| 2026-01-11 | סילוק שעבוד |
| 2026-07-07 | רישום שעבוד |
| 2026-07-07 | רישום שעבוד |