Elstor Oy
New power-to-heat thermal energy storage technology for emission free low-cost steam and heat.
16 employees · est. 2017 · Lappeenranta, Finland
VIOTAS is the older company (2017 vs 2013); VIOTAS is the larger of the two.
Side-by-Side Comparison
| Metric | Elstor Oy | VIOTAS |
|---|---|---|
| Founded | ||
| Founded | 2017 | 2013 older |
| Headquarters | ||
| Headquarters | Lappeenranta, Finland | Limerick, Ireland |
| Employees | ||
| Employees | 16 | 90 larger |
| Industry | ||
| Industry | Energy | Energy |
| Funding Stage | ||
| Funding Stage | Seed | Debt Financing |
| Total Funding | ||
| Total Funding | $4.33M | $10.00M |
| Funding Rounds | ||
| Funding Rounds | 2 | 1 |
| Services | ||
| Services | Fossil-free steam production, Energy storage solutions, Carbon emission reduction strategies, Power-to-heat conversion systems, Optimization of industrial energy consumption | Not tracked yet |
| Target Customers | ||
| Target Customers | Food industry, Chemical industry, Industrial laundries, General process industries | Not tracked yet |
| Taxonomy | ||
| Taxonomy | Power-to-Heat Technology, Thermal Energy Storage, Emission-Free Solutions, Cost-Efficiency, Steam And Heat Production, Demand Response Integration, Low-Cost Electricity Utilization, Energy Storage Systems, Grid Balance Control, Carbon Emission Reduction, Industrial Energy Solutions, Energy Innovation, Sustainable Technology, Climate Fund Recognition, Energy Transition | Demand Side Unit, Demand Response, Smart Grid Solutions, Power Quality Analytics, FCAS, DS3, Fast Frequency Response, Electricity Management, Utilities Management, Commercial And Industrial Partners, Pharmaceuticals, AgriTech, Food And Beverage |
| Website | ||
| Website | elstor.fi | viotas.com |
About Elstor Oy
Elstor Oy, with its slogan "New power-to-heat thermal energy storage technology for emission free low-cost steam and heat.", positions itself as a key playmaker in the clean energy sector. Founded in 2017, the Finnish company is pioneering zero-emission solutions for steam and heat production throug...
About VIOTAS
VIOTAS is a pioneering gridware technology startup based in Ireland, founded in 2013. Specializing in the energy industry, VIOTAS helps large businesses generate additional revenue and achieve their sustainability goals through smart electricity management and demand response services. The company's...
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Funding, hiring, leadership and stack changes at Elstor Oy and VIOTAS — by email.
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Compiled from the BounceWatch company index. We last looked at Elstor Oy on 1 Apr 2026, and VIOTAS on 3 Dec 2024. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.