Puget Sound Energy to Deploy Storage System Built on MESA Standard

On January 23, 2015, Puget Sound Energy (PSE) announced it will deploy a 2MW/4.4MWh energy storage system utilizing lithium-ion batteries, designed to MESA’s set of open standards.

Excerpts from PSE’s press release included below:

The first battery system PSE will deploy is being designed to the Modular Energy Storage Architecture (MESA) set of open standards for energy storage. MESA is an association of electric utilities and energy storage vendors based in California whose mission is to define and promote the use of open standards in the creation of energy storage systems.

The system will use 1Energy’s Intelligent Controller™ software to demonstrate several core use cases such as shaving peaks in demand, grid flexibility, and backup power.

“Having PSE’s leadership on this issue will certainly inspire others and give our efforts more momentum,” said Darcy Wheeles, Program Director for the MESA Standards Alliance.

See full press release here.

Gov. Inslee Dedicates First Battery Storage System Based on MESA Standard

San Francisco, CA –

Last week, the Snohomish County Public Utility District (PUD) and 1Energy Systems welcomed Washington State Gov. Jay Inslee to dedicate the first battery storage system built using Modular Energy Storage Architecture (MESA).

See full press release here.

From the release:

The MESA system provides a standard, non-proprietary and scalable approach to energy storage. The PUD’s energy storage program, which forges partnerships with major U.S. and international business partners, will include two large-scale lithium ion batteries, one built by Mitsubishi and GS Yuasa and a second by LG Chem. Both lithium ion batteries will utilize a Parker Hannifin Power Conversion System.  Later this year, the PUD will deploy multiple advanced vanadium flow batteries at a second PUD substation, which will be built by UniEnergy Technologies, based in Mukilteo, Wash.

“This project demonstrates how MESA technology standards, pioneered in Washington, will accelerate global innovation in energy storage,” said Darcy Wheeles, Program Director of the MESA Standards Alliance. “Standards-based products make it easier and less expensive for utilities to control and optimize energy storage and integrate renewable power sources with the grid.”

The collaboration will produce state-of-the-art solutions, bringing together major equipment and software companies to establish the appropriate industry standards and interfaces. The open standards approach is much different than other energy storage projects in the past and is expected to result in the expanded application of plug-and-play type energy storage systems to help solve the expanding needs of today’s electric grid, which depends more on intermittent resources such as wind and solar.

Project Partners

  • 1Energy Systems, principal partner and architect of MESA software controls
  • Alstom Grid, supplier of the PUD’s EMS, SCADA & DMS platforms
  • LG Chem, supplier of lithium ion battery
  • GS Yuasa International Ltd. and Mitsubishi International Corporation, manufacturer and supplier of lithium ion battery respectively
  • UniEnergy Technologies, supplier of vanadium flow battery
  • Parker Hannifin, provider of the MESA-compliant power conversion system
  • University of Washington, research expertise in power systems and computer science
  • Pacific Northwest National Laboratory, research expertise in power systems

New plug and play Energy Storage Standard announced by MESA and SunSpec

San Jose, CA, October 1, 2014, Energy Storage North America (ESNA) — The MESA Standards Alliance (MESA) and the SunSpec Alliance have jointly released the first open, non-proprietary energy storage system specification for public review. The draft specification, referred to as SunSpec Energy Storage Model Specification, incorporated in MESA specifications as a “MESA-Device,” was developed through a joint effort and proposes standards for how the different components of an energy storage system (power meters, power conversion systems, and batteries) communicate with one another.

“As utilities upgrade their operations to effectively manage and integrate the next generation of distributed assets, standards like SunSpec and MESA, will be essential to successfully achieving the smart-grid vision,” said Craig Collar, Assistant General Manager of the Snohomish County Public Utility District and MESA Board Chair.

A Technical Storage Working Group met weekly over the past nine months to draft the specification. The Working Group included input from a variety of industry participants and built upon SunSpec’s prior work on power meters and power conversion systems and then added battery models to that base.

“By using SunSpec’s protocols as the foundation, the Technical Workgroup’s efforts were greatly accelerated,” said Tom Tansy, Chairman of the SunSpec Alliance. “SunSpec is proud to release the SunSpec Energy Storage Model adopted by MESA—it is a major energy storage industry innovation.”

The draft specification can be found at www.mesastandards.org and www.sunspec.org. The Technical Work Group will be accepting public input through the end of 2014.


About the MESA Standards Alliance

The MESA (Modular Energy Storage Architecture) Standards Alliance is an industry group whose mission is to accelerate the growth of the energy storage industry through the development of an open, non-proprietary set of specifications and standards for energy storage systems. MESA’s component-based approach to energy storage gives electric utilities more choice, and allows battery, power converter, and software manufacturers to reach more customers and reduce costs.

Nine organizations have joined together to form the MESA Standards Alliances’s first Board of Directors. These founding members, representing leading OEMs and utilities working on energy storage, will guide the organization’s development and strategy.

1Energy Systems Inc

Alstom Grid

Pacific Northwest National Laboratory

Parker Hannifin Corporation

Puget Sound Energy

Sacramento Municipal Utility District

Seattle City Light

Snohomish Public Utility District

UniEnergy Technologies

For more information about MESA, or to join and participate in developing standards for the battery storage industry, visit www.mesastandards.org.


About SunSpec

The SunSpec Alliance is a trade alliance of developers, manufacturers, operators and service providers, together pursuing open information standards for the distributed energy industry. SunSpec standards address most operational aspects of PV, storage and other distributed energy power plants on the smart grid—including residential, commercial, and utility-scale systems—thus reducing cost, promoting innovation, and accelerating industry growth.

Over 70 organizations are members of the SunSpec Alliance, including global leaders from Asia, Europe, and North America. Membership is open to corporations, non-profits, and individuals. For more information about the SunSpec Alliance, or to download SunSpec specifications at no charge, please visit www.sunspec.org.

To understand the philosophy of the SunSpec Alliance and its role in the industry, you can also download the SunSpec Alliance white paper describing the benefits of standards or the current SunSpec Alliance Backgrounder from www.sunspec.org.

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Media Contacts:

MESA Standards Alliance:
Darcy Wheeles


SunSpec Alliance:
TJ Keating


MESA gets a boost from Washington State Governor Jay Inslee

July 8, 2014
Washington State Governor Jay Inslee announced today over $14 million in awards from his state’s Clean Energy Fund to invest in storage and smart grid projects at utilities and research institutions in the state. This is great news for MESA, since Washington-based Snohomish Public Utility District and Puget Sound Energy are both MESA supporters.
Following upon Governor Inslee’s announcement, both Snohomish PUD and 1Energy Systems today released news that they expect to deploy more MESA-based systems and technology based on the investment of matching funds from the state.
All in all, a good day for open standards in energy storage!

SunSpec and MESA Alliances Drive Standards for Energy Storage

January 28, 2014

Distributech Conference, San Antonio, TX – Today the SunSpec Alliance and the MESA Standards Alliance announced a joint effort to advance common communication standards for energy storage devices to lower costs and increase customer adoption.

An industry consortium of electric utilities and technology suppliers have developed the Modular EnergyStorage Architecture (MESA) and created the MESA Standards Alliance. The MESA standards are an open, non-proprietary set of specifications and standards to accelerate interoperability, scalability, safety, quality, availability, and affordability in energy storage components and systems. These standards are complementary to SunSpec communication standards for distributed energy components and applications. The intention of MESA and SunSpec is to enable seamless integration of storage and distributed energy.

Sunspec Logo_87_framed“SunSpec standards address the operational aspects of photovoltaic power plants on the smart grid and thus reduce costs, promote technology innovation, and accelerate industry growth. The MESA standards do the same thing for the energy storage market and offer a natural complement to our efforts to grow the distributed energy industry.” said Tom Tansy, Chairman of the SunSpec Alliance.


Read the full SunSpec-MESA Alliance news release.2014-01-28