Store megawatt-hours. Deploy in weeks.
Solstice ESS delivers pre-engineered, containerized battery storage — from a single 2.5 MWh unit to a full battery yard — built for utilities, industrial sites, and microgrids.
From load study to grid-synchronized storage.
Every deployment starts with your interconnection point and load profile — the container configuration follows from that, not the other way around.
Site & load assessment
Interconnection review, load profile analysis, and pad or land requirements confirmed before design begins.
Engineering & permitting
Single-line diagrams, fire safety review, and utility interconnection agreement handled by our engineering team.
Factory-built deployment
Containers arrive pre-assembled and factory-tested, then craned into place — no on-site battery assembly.
Commissioning & monitoring
Grid synchronization, SCADA integration, and 24/7 remote monitoring from the day the system goes live.
One container. A predictable set of numbers.
Every Solstice ESS container ships to the same spec, so scaling from one unit to ten is a repeat order, not a redesign.
One platform, four ways to put it to work.
The same container hardware supports very different jobs — the control software is what changes.
Peak shaving
Discharge during demand peaks to cut demand charges without curtailing operations.
Backup power
Seamless UPS-grade backup for critical loads during grid outages.
Renewable integration
Smooth solar and wind output and shift generation into higher-value hours.
Microgrid & islanding
Disconnect from the grid automatically and keep a site powered on its own.
How many containers does your site need?
Move the slider to the daily energy you need to shift or back up — this sizes a configuration in whole container units.
What ESS containers do once they're live.
Demand charges were our biggest line item. The array now covers our top usage windows automatically, no manual switching involved.
The storage absorbs excess output during peak sun hours and releases it in the evening, instead of us curtailing generation.
Two grid outages since commissioning, and the switchover was invisible to our operations team both times.
What engineering teams ask before ordering.
Most single- to multi-container projects go from signed order to commissioning in 12–20 weeks, depending on permitting and utility interconnection timelines.
Every container is UL 9540A tested for thermal runaway propagation, with integrated aerosol suppression and continuous cell-level monitoring.
Yes — the switchgear and SCADA architecture are designed with expansion in mind, so additional units connect without re-engineering the original system.
Each container ships with a 20-year performance warranty, and remote monitoring flags degradation or faults before they affect availability.
Get a proposal sized to your load.
Free site and load assessment, with a real container configuration — not a rough estimate.
