Below is a partial list of industries and customers who have chosen the Stem system:
Two InterContinental hotels in San Francisco – the InterContinental Mark Hopkins and InterContinental San Francisco – have already benefited from traditional energy conservation and efficiency measures. Additional measures would be difficult without compromising the comfort of hotel guests.
Stem’s system delivers cost savings using data, analytics, and energy storage at the historic InterContinental Mark Hopkins and LEED Gold Certified InterContinental San Francisco hotels. Stem’s solution was installed in November 2012 and immediately began leveraging the proprietary combination of big data, predictive analytics and energy storage to effectively “hybridize” the hotels by intelligently switching between battery power and grid power to reduce energy costs.
The 85-year old Mark Hopkins expects a significant reduction in its energy bill. In addition, the InterContinental can expect to benefit from Stem’s rich data and unparalleled insights into past, present, and future energy use that can be used to guide critical real-time operational decisions.
A service station with a car wash experiences significant usage spikes during the day, resulting in high demand charges. Premier’s electricity bill, between $4,000 – 6,000 per month, is its biggest expense after its mortgage and payroll. To address these high costs, Premier has already undertaken many energy efficiency measures and any additional changes would be very expensive. For example, new car dryers produce more airflow than previous models with only one third the horsepower, but they cost almost $40,000. The energy savings alone are not enough for owner Gerard Habib to justify replacing his existing equipment.
The Stem system appealed to Gerard immediately due to the potential for immediate impact to his bottom line with no operational changes. The Stem system will monitor the usage spikes at Premier and store enough energy during off-peak times to be discharged during peak times. There are many hybrid cars that pass through the car wash, and the Stem system will effectively turn Premier into a “hybrid” operation, switching between battery and grid power as necessary.
With the Stem system, Premier expects to be able to cut its monthly energy bill up to 18%. This will help the business significantly. Premier’s payroll expenses recently went up due to an increase in the minimum wage. Reducing operating expenses through energy savings will enable Premier to maintain its workforce and profitability.
Responsible for two large buildings at the Specialized headquarters in Morgan Hill, California, Alfredo Echauri has the added challenge of maintaining comfortable working environments for both office workers as well as the athletes who design and test the premium bicycles at the location. HVAC makes up about 60% of the energy draw at the location, and lighting is also a high consumption component. Specialized’s success has led to growth in the employee base and increased energy consumption at peak load times. The challenge of managing energy costs at Specialized is typical of similar environments where traditional curtailment and load-shedding measures such as pre-cooling and changing setpoints to match expected weather are manual and prone to error.
The Stem Energy System appealed to Specialized due to the fact that it is an innovative solution, yet simple to implement. The fact that it requires no change to operations was appealing to someone who is responsible for maintaining the comfort and productivity of a high-functioning organization. The system also appealed because of the aesthetic design of the PowerStore units, and the fact that they match the general design of the lab area at Specialized.
With the continuing success and growth of the company, demand charges and their disproportionate impact on the monthly electricity bill are a growing concern for Alfredo. He considers the Stem Energy System as one tool in his arsenal of approaches to tackling the cost of his growing energy needs. He expects to see double-digit curtailment of energy costs with the Stem system deployed.