About
Greensmith Energy—now branded as Wärtsilä Energy Storage—is a global leader in utility-scale battery energy storage systems (BESS). The platform brings together three core pillars: intelligent software, high-performance hardware, and comprehensive lifecycle services, forming an end-to-end solution for energy storage at scale. At the heart of the offering is GEMS (Grid Energy Management System), an AI-powered software platform that delivers real-time monitoring, automated optimization, and intelligent control across energy storage assets. GEMS enables operators to maximize revenue, reduce risk, and respond dynamically to grid conditions—including synthetic inertia support and microgrid management for critical facilities like data centers. On the hardware side, Wärtsilä's compact, safety-focused BESS units are engineered for high energy density, streamlined logistics, and long operational life. Lifecycle services wrap the entire solution with 24/7 remote operational support, performance analytics, and proactive maintenance to protect long-term ROI. With 130+ projects completed globally and a reputation as a bankable, reliable partner, Wärtsilä Energy Storage serves utilities, independent power producers, grid operators, and large commercial/industrial customers seeking to integrate renewables, stabilize grids, and unlock new revenue streams from their energy assets. The platform is especially suited for large-scale renewable integration, frequency regulation, capacity markets, and behind-the-meter optimization.
Key Features
- GEMS Software Platform: AI-powered Grid Energy Management System providing real-time data, intelligent control, and automated revenue optimization across energy storage assets.
- Utility-Scale Hardware: Compact, high-capacity battery energy storage units engineered for safety, high energy density, and efficient logistics at grid scale.
- 24/7 Remote Operational Support: Round-the-clock monitoring and remote operations team ensuring maximum uptime, reliability, and rapid incident response.
- Lifecycle Services: Full-system support including proactive maintenance, performance analytics, and long-term asset management to protect and grow ROI.
- Synthetic Inertia & Microgrid Control: Advanced grid services including synthetic inertia simulation and microgrid management for critical infrastructure and data centers.
Use Cases
- Utility-scale grid stabilization and frequency regulation using large battery energy storage systems paired with GEMS automated dispatch.
- Renewable energy integration projects that co-locate solar or wind assets with battery storage to smooth generation variability and enable higher clean energy penetration.
- Revenue optimization for independent power producers participating in capacity markets, ancillary services, and energy arbitrage.
- Data center and critical infrastructure microgrid management requiring five-nine uptime with seamless backup and synthetic inertia support.
- Behind-the-meter commercial and industrial energy cost reduction through demand charge management and peak shaving with intelligently controlled storage assets.
Pros
- Proven Global Scale: Over 19 GWh deployed or contracted across 130+ sites gives customers confidence in a battle-tested, bankable solution.
- Fully Integrated Stack: Hardware, software, and lifecycle services under one roof eliminates integration complexity and single-vendor accountability gaps.
- Intelligent Revenue Optimization: GEMS software continuously automates dispatch decisions to maximize market revenues and minimize operational risk in real time.
Cons
- Enterprise/Utility Scale Only: Solutions are designed for large-scale grid and commercial applications; not suitable for residential or small behind-the-meter deployments.
- Opaque Pricing: As an enterprise solution, pricing is entirely contract-based with no public rate information, requiring direct engagement for cost assessment.
- Long Sales and Deployment Cycles: Utility-scale projects involve complex procurement, permitting, and construction timelines that can span months to years.
Frequently Asked Questions
What is GEMS and how does it optimize energy storage?
GEMS (Grid Energy Management System) is Wärtsilä's proprietary AI-powered software that monitors, controls, and automates energy storage dispatch in real time. It analyzes grid conditions, market signals, and asset state to maximize revenue while ensuring safe and reliable operation.
What scale of projects does Wärtsilä Energy Storage handle?
Wärtsilä focuses on utility-scale and large commercial/industrial projects. With 19+ GWh deployed or contracted across 130+ global sites, typical projects range from tens of megawatts to hundreds of megawatts in capacity.
Does Wärtsilä Energy Storage support renewable energy integration?
Yes. A core use case is pairing large-scale solar and wind generation with battery storage to smooth output variability, provide grid ancillary services, and enable higher renewable penetration on the grid.
What lifecycle support is available after installation?
Wärtsilä offers comprehensive lifecycle services including 24/7 remote operational support, preventive and corrective maintenance, performance benchmarking, software updates, and long-term asset optimization planning.
Can GEMS be used for data center or critical facility backup power?
Yes. GEMS includes microgrid control capabilities specifically designed for five-nine (99.999%) uptime requirements, making it suitable for data centers and other mission-critical facilities needing resilient, uninterruptible power.
