Architectural Innovation in C&I Energy Storage: How SolisStorage EverCore Redefines Long-Duration and Multi-Revenue Systems
Industry Analysis | 2026-07
Architectural Innovation in C&I Energy Storage: How SolisStorage EverCore Redefines Long-Duration and Multi-Revenue Systems
SolisStorage EverCore C&I energy storage product lineup.
SolisStorage is the dedicated energy storage subsidiary of Solis (Ginlong Technologies, Shenzhen Stock Exchange: 300763). Main products include residential energy storage systems, commercial and industrial (C&I) energy storage systems, and utility-scale energy storage systems. With over two decades of power electronics expertise and a track record of being the world’s #1 residential PV inverter shipper in 2023 (Wood Mackenzie), Solis brings deep engineering maturity to the energy storage segment. The company’s EverCore family targets the rapidly expanding C&I long-duration storage segment—a market valued at USD 4.85 billion in 2024 and projected to grow at a 13.6% CAGR through 2030 (MarketsandMarkets).
The Problem: Balancing Cost, Complexity, and Open Markets
C&I energy storage projects face a tension between upfront capital expenditure and lifecycle operating expenses. Traditional liquid-cooled systems reduce thermal gradients but introduce fluid maintenance, higher component counts, and multi-vendor control complexity. Meanwhile, mature electricity markets in Europe are moving from simple peak‑valley arbitrage to multi‑revenue models including FCR, aFRR, demand response, and virtual power plant (VPP) dispatch. A closed hardware architecture becomes a liability in these open markets, limiting participation in spot and ancillary service trading.
SolisStorage EverCore: A System‑Level Rethink
The EverCore series—spanning 50–125 kW inverter power with 100.5–261.2 kWh battery capacity—addresses these challenges through four foundational architectural choices:
- AC‑DC Separation: The hybrid energy storage inverter (AC side) and battery cabinet (DC side) are physically decoupled. This yields three advantages: thermal separation improves cell temperature uniformity (only 3.5 kW of electrochemical heat is managed inside the cabinet); protection separation allows IP66 inverter (dust‑tight, protected against powerful water jets) and IP55 cabinet; structural separation enables independent DC‑side expansion—one inverter can connect up to six battery cabinets, reducing system expansion costs by approximately 10%.
- 125 kW Integrated Inverter: The single unit integrates PCS, STS, PV inverter, circuit breaker protection, and EMS. It achieves seamless grid‑tied/off‑grid switching in under 10 ms without an external STS, supports up to 200% PV oversizing, and allows up to six units to be parallel‑connected directly to the grid.
- Advanced Air‑Cooling: A patented three‑air‑duct design—combining diversion air ducts with Coanda Effect airflow attachment—boosts heat dissipation efficiency by 30% compared to conventional air cooling. This keeps cell temperature uniformity close to liquid‑cooled levels while eliminating coolant replacement and pump failures. With IP66/IP55 and C4 anti‑corrosion, the system operates reliably from –25 °C to 55 °C and up to 4,000 m altitude.
- Ultra‑Simplified O&M: Over a 10‑ to 15‑year project lifecycle, EverCore saves approximately €9,500 per unit in O&M costs by avoiding liquid coolant replacement, simplifying PCS/pack swaps, and reducing inspection frequency. Industrial components such as Minebea fans (10‑year maintenance‑free) and Honeywell calibration‑free gas detectors further minimise unplanned downtime.
EverCore C&I system installed at a warehouse in Denmark.
Use Cases: From Warehouse Self‑Consumption to Multi‑Revenue Backup
Two deployed projects illustrate EverCore’s versatility. In Denmark, a 125 kW / 261 kWh system was installed for self‑usage at a warehouse. The system switches between on‑grid and off‑grid in under 10 milliseconds, preventing interruptions and delivering electricity bill savings. In Thailand, a 125 kW / 522 kWh system serves self‑consumption and backup power for a commercial facility, achieving stable operation and reduced energy costs. Both projects use the 314 Ah LFP cells (8,000 cycles at 0.5C, ≥70% retention) custom‑developed for C&I applications—a 14% cycle‑life improvement over the industry’s standard 280 Ah cells.
Market Trend: Open Ecosystems Are the New Competitive Moats
The shift toward real‑time energy markets demands software openness. EverCore’s control architecture replaces the typical multi‑CPU distributed topology (separate controllers for BMS, PCS, EMS, STS) with a single central controller, reducing failure points and protocol latency. On the software side, the system has been connected or is undergoing integration with 102 third‑party VPP/EMS operators across 11 European countries—including Octopus Energy’s Kraken platform in the UK and Check Watt in the Nordics. The Solis AI Cloud Platform, deployed at over 5,500 energy storage stations globally, ingests Nordpool and Flatpeak pricing data to perform minute‑level charge‑discharge optimization. At a residential storage site in Latvia, this AI layer boosted annual electricity bill savings by 302.6%.
EverCore C&I system deployed for self-consumption and backup in Thailand.
Comparison with Traditional Solutions
Compared to conventional liquid‑cooled C&I cabinets, EverCore’s air‑cooled approach eliminates coolant replacement and pump failures. The single‑axis integration (PCS+STS+PV inverter+EMS in one enclosure) reduces the number of external cabinets and inter‑vendor troubleshooting. However, a practical limitation remains: under sustained peak load in very high ambient temperatures (>50 °C), air cooling cannot match the absolute thermal conductivity of liquid cooling. EverCore’s three‑air‑duct design narrows this gap—achieving temperature uniformity close to liquid cooling—but for installations in the hottest desert climates, a liquid‑cooled variant may still be preferable.
Future Outlook
As C&I energy storage moves toward 2‑ to 8‑hour duration profiles and multi‑revenue stacking, the winners will be those who combine hardware reliability with software openness. SolisStorage is positioned to deepen its software ecosystem and AI forecasting capabilities, extending the economic lifecycle of systems beyond 16 years. Continued investment in 314 Ah+ cells and VPP compatibility will be critical for capturing the expected 13.6% CAGR in the LDES segment.
FAQ
Q: What certifications does EverCore hold for EU markets?
A: EverCore has obtained IEC 62619 safety certification (industrial lithium batteries) and EMC directive compliance (EN IEC 61000‑6‑2/‑4), both issued by TÜV.
Q: Can EverCore be customised for OEM/ODM projects?
A: Yes. Solis supports customisation of logo, outer package, software interface, regional voltage standards, communication protocols, and function parameters. MOQ is 1 unit for standard models and 20 units for custom OEM orders, with lead times of 30–45 days.
Q: How does EverCore compare with liquid‑cooled systems in total cost of ownership?
A: EverCore’s air‑cooled design eliminates coolant‑related O&M, saving approximately €9,500 per unit over the project lifecycle. The 8,000‑cycle LFP cells extend the economic life to about 16 years versus 14 years for 7,000‑cycle cells.
Q: Which third‑party VPP platforms is EverCore compatible with?
A: As of early 2026, EverCore has been connected or is in the process of connecting with 102 operators across 11 European countries, including Kraken by Octopus Energy (UK) and Check Watt (Nordics).
Q: What is the operational temperature range and altitude limit?
A: EverCore operates from –25 °C to 55 °C and at altitudes up to 4,000 m, with IP66 (inverter) and IP55 (cabinet) protection plus C4 anti‑corrosion coating.
For a comprehensive overview of SolisStorage’s product portfolio, manufacturing capabilities, and global service network, download the full corporate brochure:
Solis Global Brochure (PDF)