HomeSmart TechHES Solar installs a BYD energy storage system with Acumen EMS controls...

HES Solar installs a BYD energy storage system with Acumen EMS controls software from energy toolbase for a Fortune 100 client

Energy Toolbase, a leading developer of energy storage software solutions, has launched a behind-the-meter energy storage project with HES Solar, a full-service solar development and installation firm based in San Diego. For a Fortune 100 food and beverage sector client, HES Solar deployed a BYD Chess energy storage system linked with Energy Toolbase’s Acumen EMS™ controls software alongside a SunPower solar PV system.

The 435-kW solar system was installed alongside a 240 kW / 532 kWh energy storage system at a new 125,000-square-foot distribution and warehouse complex in Lakeside, California. The Acumen EMS-powered energy storage system was created to lower the host customer’s utility cost by combining demand charge control and time-of-use energy arbitrage. HES Solar estimates that the combined project will save more than $6 million in utility bills over the course of 25 years. “HES Solar has been a longtime, faithful user of Energy Toolbase’s modeling software,” HES Solar CEO Ross Williams remarked.

 “Our priority is to provide a safe and optimal storage system for our clients. We are excited to utilize both their Acumen EMS™ controls and ETB Monitor products as well.”

Energy Toolbase offers a unified package of project modeling, storage control, and asset monitoring tools to help solar and storage developers deliver projects more efficiently. HES Solar and the host customer will have complete visibility into the solar and storage operations thanks to the ETB Monitor platform, which offers a secure, web-based portal for the customer to view real-time system performance, bill savings, create alerts, schedule dispatch commands, and override events.

Energy Toolbase and BYD

Energy Toolbase was the largest BYD Chess system reseller in North America in 2021. Energy Toolbase has fully integrated its controls software with BYD energy storage hardware, allowing developers to install and commission their combined solution quickly. Energy Toolbase has currently commissioned or contracted its Acumen EMS on over 60 locations in the United States, Canada, and Mexico, totaling over 30 MWh of storage capacity. Following its merger with Pason Power, Energy Toolbase rebranded their energy storage controls product to Acumen EMSTM in October 2020.

“I consider advanced control capabilities to be the core competence of a competitive energy storage software company,” said Michael Liu, the Senior Director of Energy Storage at BYD. “Energy Toolbase and HES Solar have been great partners to work with, and we are optimistic about deploying many more energy storage systems together in the future.”

About Energy Toolbase

Energy Toolbase is an industry-leading software platform that provides a cohesive suite of project estimating, storage control, and asset monitoring products that enable solar and storage developers to deploy projects more efficiently. Energy Toolbase’s SaaS products are used by over 1,000 distributed energy organizations worldwide. To learn more or request a free trial, visit

Energy Toolbase is backed by its parent company, Pason Systems, a leading global provider of data management systems and controls automation software for the energy industry. With a global footprint and 40-year track record, Pason enjoys one of the strongest balance sheets in the industry and trades on the Toronto Stock Exchange under the symbol PSI. For more information visit:

About HES Solar

HES Solar, formerly known as Home Energy Systems, is a local, family-owned and operated, full-service solar company established in San Diego in 2001. The innovative company uses the best quality solar equipment by SunPower to create residential and commercial energy systems that are optimized for durability and performance. HES is also an Enphase Encharge certified installer, Tesla Powerwall, and Megapack certified installer, as well as an EV charging station installer. HES is committed to customer satisfaction from Chula Vista to Poway to Murrieta and provides top-tier support as more clients gain energy independence through renewable, money-saving alternatives to utility power. For more information, please visit

About BYD

The Official Sponsor of Mother Nature™, BYD, which stands for Build Your Dreams, is the world’s leading electric vehicle company with proven innovative technology for cars, buses, trucks, forklifts, and rail systems – like SkyRail. BYD is dedicated to creating a truly zero-emission ecosystem offering technology for solar electricity generation, energy storage to save that electricity, and battery-electric vehicles powered by that clean energy. BYD has 220,000 employees across the globe, including nearly 1,000 in North America. For more information, please visit


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