Frequently Asked Questions
A quick reference to common questions about our Thermal Energy Storage system. If you still have questions that we have not addressed, please reach out to us.
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1. WHAT IS THERMAL ENERGY STORAGE (TES)?
TES is the storing of excess thermal energy (energy in a system due to its temperature) for future use.
2. HOW DOES YOUR THERMAL ENERGY STORAGE SYSTEM WORK?
The Viking Cold TES system leverages existing refrigeration equipment in low-temperature facilities to freeze Phase Change Material (PCM) when energy costs are lower and system efficiencies can be exploited. This allows intelligent controls to turn off refrigeration equipment during periods of high energy costs while the PCM maintains temperature stability and low energy consumption. The result is 20% to 35% lower energy costs, 38% greater temperature stability and more efficient, longer lasting refrigeration systems.
3. WHAT IS INCLUDED IN THE VIKING COLD SOLUTIONS TES SYSTEM?
Our Thermal Energy Storage system includes three components:
  • Phase Change Material (PCM)
  • Control System
  • Remote Monitoring & Reporting Portal
4. WHAT IS A PHASE CHANGE MATERIAL (PCM)?
Phase Change Materials (PCM) store and release energy when they transition between their solid and liquid states. While changing phases our engineered PCM absorbs 300 times more heat than food.
5. IS YOUR PHASE CHANGE MATERIAL SAFE TO USE?
All our PCM formulations are comprised of deionized water and inorganic salts. They are food safe, environmentally friendly, non-toxic and non-combustible. The entire system is also 100% recyclable.
6. ARE THERE ANY MECHANICAL PARTS IN YOUR TES SYSTEM?
No. There are no mechanical parts (pumps, motors, actuators, compressors, etc.) in our TES system. They leverage existing refrigeration equipment. The PCM is housed in self-contained cells mounted in stationary positions throughout the facility.
7. WITH WHICH REFRIGERATION SYSTEMS DOES YOUR TES SYSTEM WORK?
Our solution is refrigeration system agnostic and works with any properly maintained system.
8. WITH WHICH CONTROL SYSTEMS DOES YOUR TES SYSTEM WORK?
Our TES system is extremely flexible and can be integrated with any existing control system. We also have our own control system that can drive the refrigeration system in conjunction with our PCM.
9. DOES THE VIKING COLD TES SYSTEM AFFECT OTHER FREEZER COMPONENTS?
No. Our system actually integrates with existing racking systems, does not reduce any storage space, does not limit sprinkler or fire suppression systems, will not affect your commodity classification and will not impede or disrupt any logistical operations in your facility. In fact, the system’s controls and remote monitoring actually improve overall efficiencies and allow for predictive maintenance of other system components.
10. CAN YOUR SYSTEM BE INSTALLED INTO EXISTING FACILITIES (RETROFIT)?
Yes. Viking Cold systems can be installed as a retrofit, refurbishment or in new construction projects. The sooner they are installed, the sooner that facility will start to see reduced energy expenses, improved temperature stability and increased refrigeration system efficiencies.
11. WHAT ARE TYPICAL ENERGY SAVINGS?
Our clients save between 20% and 35% of their energy expenses while maintaining greater temperature stability.
12. DOES THE TES SYSTEM MAINTAIN TEMPERATURE STABILITY?
Yes. Our TES system is engineered to maintain temperature stability within the specific temperature range for each facility; providing fewer fluctuations and a 38% slower rise in temperatures.
13. CAN YOUR SYSTEM PROVIDE THERMAL BACKUP PROTECTION?
Yes. In the event of power outages or equipment failure, we have seen temperatures remain stable three times longer with our TES system installed.
14. DOES THE TES SYSTEM IMPROVE REFRIGERATION EFFICIENCY?
Yes. The Viking Cold system maintains stable temperatures while allowing the existing refrigeration system to be turned off for extended periods of time. When the systems are running, they run at full capacity at times when ambient temperatures are lower, enabling greater refrigeration efficiency and less energy usage. The reduced mechanical run time of the refrigeration equipment also leads to less maintenance and longer equipment life.
15. DOES YOUR SYSTEM INTEGRATE WITH ON-SITE SOLAR POWER GENERATION?
Yes. Our system pairs very well with onsite solar/PV generation to dramatically increase solar ROI. Our solar clients have seen a reduction of 39% annualized energy expenditures and 95% overnight grid reduction, directly addressing grid challenges related to the “duck curve”.
16. HOW LONG WILL YOUR SYSTEM LAST?
The life of the Viking Cold TES system is 20+ years.
17. HAS YOUR TES SYSTEM BEEN APPROVED OR VERIFIED BY ANY OUTSIDE PARTIES?
Yes. Our system installations have been accepted and funded by numerous utilities as part of energy saving incentive programs, as well as being proven effective in a third-party validation study (click here) performed by the California Energy Commission’s Emerging Technology Coordinating Council.

Still have questions about our Thermal Energy Storage solution?
Call +1 832.781.COLD or click for more answers.

Recent Posts From Our Blog
Viking Cold Solutions Strengthens Community Bonds with Holiday Volunteer Effort at Houston Food Bank

Continuing our tradition of giving back, Viking Cold Solutions volunteered at the Houston Food Bank over the holiday season.  The team rolled up their sleeves to tackle a variety of tasks, from building and breaking down boxes to packing essential food items for local pantries.  Pallets of goods were transferred to assembly lines, and the kitchen buzzed with activity as a holiday lunch was prepared for those in need. The Houston Food Bank is a solution to both hunger and food waste.  Around 1 million people in the 18 southeast Texas counties served by Houston Food Bank are considered food insecure – lacking consistent access to enough nutritious food to fuel a healthy life.  To address this challenge, the Houston Food Bank distributes food and other essentials through a network of more than 1,600 community partners.  In addition, the food bank provides programs and services aimed at helping families achieve long-term stability which include nutrition education, health management, and help in securing state-funded assistance and other services. At Viking Cold Solutions, we believe in paying forward our good fortune by supporting food banks across the globe with our Thermal Energy Storage technology.  This innovative solution reduces energy costs and allows food banks to allocate more resources toward serving their communities.  The most recent addition to Viking Cold Solutions food bank portfolio includes Feeding Northeast Florida.  We completed a project for Feeding Northeast Florida in December just in time for the holidays and the New Year season.  By providing food banks with sustainable technology, Viking Cold Solutions helps organizations like the Houston Food Bank and Feeding Northeast Florida to extend their reach and increase their impact in the fight against hunger.

Thermal Energy Storage: Shaping the Future of Demand Management & Renewable Energy

Renewable energy has long been synonymous with wind and solar — sources derived from nature’s ability to create energy that emit zero greenhouse gases.  Today, Thermal Energy Storage (TES) is emerging as a critical component of the renewable energy landscape, standing alongside wind and solar as part of the solution for a cleaner, more resilient energy future. At this year’s Energy Efficiency Policy Forum, put on by the American Council for an Energy-Efficient Economy (ACEEE), demand response and virtual power plants (VPPs) were key topics of discussion, with Thermal Energy Storage increasingly recognized as a vital component.  TES provides a reliable and cost-effective means of storing and releasing energy as cold or heat, helping balance supply and demand.  By integrating with distributed energy resources like solar and wind, TES enhances the efficiency and flexibility of VPPs, storing excess renewable energy for later use, reducing grid strain, and improving energy resilience. The ACEEE is a nonprofit focused on advancing energy efficiency to foster economic growth and address climate change which is committed to reducing energy waste, supporting equitable economic opportunities, and improving public health and the environment.  This year’s Policy Forum centered on shaping federal energy policies, with discussions on building efficiency, transitioning industries to low-carbon practices, and enhancing electric vehicle and freight systems.  The forum aimed to influence policies that strengthen U.S. competitiveness and address climate challenges. Inspired by the discussions at the Energy Efficiency Policy Forum, Viking Cold Solutions leadership team took these learnings to the subsequent Department of Energy’s Deploy 24 Conference.  The focus of the DOE conference was on accelerating the deployment of critical energy and decarbonization technologies, such as TES, across the U.S.  At both events, Viking Cold engaged with policy makers, utility companies, and developers, exploring the growing opportunities TES offers for increased utilization of renewables.  Viking Cold Solutions is ready to partner with our customers and ensure they achieve their sustainability goals. Photos by ACEEE and DOE.

Driving Innovation and Sustainability: Highlights from CEBA

With energy costs on the rise and increasing pressure on companies to meet sustainability goals, energy efficiency has become essential for the cold chain and controlled-environment industries.  The Controlled Environment Building Association (CEBA), part of the Global Cold Chain Alliance, focuses on advancing cold chain infrastructure by supporting the design, construction, and maintenance of cold storage facilities and other controlled environment buildings.  Through its Conference & Expo, CEBA connects industry professionals, shares best practices, and promotes innovations that enhance safety, efficiency, and sustainability across temperature-controlled facilities. CEBA values sustainable design and improving facility resiliency, emphasizing the value of proactive planning to reduce costs, streamline workflows, and implement energy-efficient solutions like Viking Cold Solutions’ Thermal Energy Storage (TES) technology.  The growing demand for energy and strain on the grid has sparked discussions at the event around alternatives such as solar power, natural gas generators, lithium batteries, and the construction of modern, efficient cold storage facilities to replace aging infrastructure.  Solutions like TES help ensure consistent temperature control, operational reliability, demand reduction, and lowered energy consumption, supporting the cold chain industry's shift toward greater sustainability and resilience. With a record-breaking 500+ attendees at the 44th CEBA Conference & Expo, Viking Cold Solutions had the opportunity to network with decision makers, executives, and industry leaders.  CEBA drives industry progress by fostering collaboration, encouraging innovation in facility design and construction, and supporting businesses in reducing costs and environmental impact.  The conference also celebrated industry excellence with the Built by the Best Awards.  Viking Cold Solutions congratulates Americold/Stellar on their win in the over $35M category for their ASRS facility in Russellville, AR, featuring 42,000 pallet positions, 136,000 square feet, and 140-foot clear heights.  By supporting the development of modern, resilient facilities during events like their annual conference, CEBA strengthens the entire cold chain infrastructure to meet evolving demands.

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