Stem works with leading utilities and grid service providers to harness our aggregated storage network as a cost-competitive, controllable and fast-acting capacity resources in a way that generates new value streams to utilities.
Customer-sited storage is a powerful resource that delivers reliable services to the grid while helping customers shape their loads for the benefit of the grid.
Stem’s customer-sited storage systems are actively supporting grid services today. The Stem system provides capacity, ramping and real-time grid visibility to operators using Stem’s aggregated storage network.
To address high penetrations of intermittent renewables, HECO has entrusted Stem with supplying storage and software services to hundreds of its customers to support grid response needs. The aggregated portfolio of energy storage at commercial and industrial customer sites provides support during periods of variable solar generation and peak demand. At the same time, Stem helps customers reduce energy costs and empowers them with real-time and actionable information.
As part of its local capacity procurement for the highly-congested West Los Angeles Basin region, SCE awarded Stem 85 MW of customer-sited storage to act as a firm, dispatchable capacity resource to enhance grid reliability and support expected demand growth in the region. Stem also provides demand charge savings and energy management software to participating customers.
Stem is the first customer-sited energy storage provider to aggregate a storage network and participate in a day-ahead market. Stem works with a program administrator to opt in to California ISO’s grid dispatch programs. Stem customers are layering grid revenues onto to storage savings without requiring changes to operations.
To assess the impacts of PV volatility, SMUD engaged Stem to gain visibility into and model voltage regulation. Through PowerMonitors placed on the distribution system and in customer buildings, Stem delivered a comprehensive view into the grid that aided in system planning.
With Stem’s coordinated fleet of PowerMonitor sub-meters and PowerStore storage devices, grid operators have immediate access to real-time visibility and fast-acting dispatchable capacity. With strategic siting, Stem’s capacity can be applied at precise times, for desired amounts in specific locations.
Better Demand Response
Stem’s storage fleets are being used by leading utilities to deliver measureable and reliable demand response in highly congested regions. With storage, there is no customer fatigue or response latency.
T&D Upgrade Deferral
Today, utilities are using distributed storage to manage grid constraints, deferring costly transmission and distribution upgrades and savings hundreds of millions of dollars or more to improve their bottom lines.
Combining Stem’s predictive analytics, monitoring and storage, the Stem system solves voltage, power and frequency challenges presented by high penetrations of renewables or in highly congested regions. Through automation, the Stem system ensures distribution line operations stay within required tolerance bounds.
Distribution line visibility
Through monitors placed on the distribution system and in customer buildings, Stem is delivering a comprehensive view into the grid for utility customers.
With the addition of storage, Stem’s network can maintain voltage and frequency within tolerance bounds on all or prioritized lines.
Using Stem’s PowerMonitors, operators gain precise visibility behind the customer’s meter or on distribution lines. Stem’s PowerScope software enables visibility and control into Stem’s fleet of energy storage devices.
Stem’s system provides a multitude of deep data points to inform grid operators for system planning, technology integration and customer behavior.
In addition to providing utility and grid operator benefits, Stem’s software can be accessed by customers for increased visibility and engagement with their energy use.
Deploy capacity specifically where, when and for the amount desired
For the first time, operators can see real-time voltage and loads at the grid edge
Precise DR participation, no behavioral change required, no customer fatigue
Place systems where capacityis needed most
Speed to Market
In-building systems reduce permitting, siting and community challenges
Customers gain demand management and enhanced energy usage and cost visibility
When advanced energy storage is coupled with big data and predictive analytics, it opens a suite of powerful grid service applications. Stem can work with you and your team to uncover the most valuable applications for your organization.
For more information, please contact us.