Elstor Oy
New power-to-heat thermal energy storage technology for emission free low-cost steam and heat.
16 employees · est. 2017 · Lappeenranta, Finland
Eversun
Leading the charge in portable utility solutions with a blend of sustainability and innovation
11-50 employees · est. 2019
Elstor Oy is the older company (2017 vs 2019).
Side-by-Side Comparison
| Metric | Elstor Oy | Eversun |
|---|---|---|
| Founded | ||
| Founded | 2017 older | 2019 |
| Headquarters | ||
| Headquarters | Lappeenranta, Finland | Not tracked yet |
| Employees | ||
| Employees | 16 | 11-50 |
| Industry | ||
| Industry | Energy | Manufacturing, Messaging and Telecommunications, Renewable Energy |
| Funding Stage | ||
| Funding Stage | Seed | Seed |
| Total Funding | ||
| Total Funding | $4.33M | $585.00K |
| Funding Rounds | ||
| Funding Rounds | 2 | 2 |
| Services | ||
| Services | Fossil-free steam production, Energy storage solutions, Carbon emission reduction strategies, Power-to-heat conversion systems, Optimization of industrial energy consumption | Design and Manufacture of Portable Light Towers, Light Tower Systems for Various Industries, Energy-Efficient and Eco-Friendly Lighting, Rapid Deployment Lighting Solutions |
| Target Customers | ||
| Target Customers | Food industry, Chemical industry, Industrial laundries, General process industries | Construction Companies, Event Planners, First Responders, Military Organizations, Public Works Departments, Film and Television Studios, Educational Institutions, Mining and Oil & Gas Industries, Homeowners, Sports Organizations |
| 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 | Portable Utility Solutions, Innovation, Solar Power, Energy Storage, Communications, Lighting Solutions, Telescopic Masts, Eco-friendly Technology, Disaster Response, Off-grid Technology, Network Engineering, Portable Power Systems, Sustainable Energy Solutions |
| Website | ||
| Website | elstor.fi | eversun.co |
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 Eversun
Eversun, founded in 2019, is gaining traction in the realm of portable utility solutions, balancing sustainability and innovation. Based in San Diego, their flagship product, the eTower, showcases a groundbreaking fusion of solar power, energy storage, and communications, all integrated into a porta...
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Funding, hiring, leadership and stack changes at Elstor Oy and Eversun — by email.
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Compiled from the BounceWatch company index. We last looked at Elstor Oy on 1 Apr 2026, and Eversun on 18 Aug 2025. 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.