Acorn Energy, Inc. Joins Russell 3000 Index

MONTCHANIN, Del., June 26, 2012 /PRNewswire/ -- Acorn Energy, Inc. (NASDAQ: ACFN) has joined the Russell 3000 Index, effective June 25, 2012 as part of the Index's annual reconstitution.  Membership in the Russell 3000, which remains in place for one year, means automatic inclusion in the small-cap Russell 2000, as well as applicable growth and value style indexes. Russell determines membership for its equity indexes primarily by objective, market-capitalization rankings and style attributes.

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"Progressing from the Russell Micro Cap Index to the Russell 3000 is an important milestone for Acorn Energy.  This migration increases awareness and liquidity of our stock," said John Moore, Chairman and CEO of Acorn.

The Russell 3000 also serves as the U.S component to the Russell Global Index, which captures approximately 98% of investable securities world-wide, is reconstituted annually and all sub-indexes are recalibrated simultaneously to accurately measure current market realities for each market segment.  These investment tools originated from Russell's multi-manager investment business in the early 1980's when the company saw the need for a more objective, market driven set of benchmarks in order to evaluate outside investment managers.

Russell indexes are widely used by institutional investors and investment managers for index funds and as benchmarks for both passive and active investment strategies.  In the institutional marketplace, an industry-leading $3.9 trillion in assets currently are benchmarked to them.

About Russell Investments
Russell Investments (Russell) is a global asset manager and one of only a few firms that offers actively managed, multi-asset portfolios and services that include advice, investments and implementation. Working with institutional investors, financial advisors and individuals, Russell's core capabilities extend across capital markets insights, manager research, Indexes, portfolio implementation and portfolio construction. Russell has approximately $155 billion in assets under management (as of March 31, 2012) and works with 2,400 institutional clients, more than 580 independent distribution partners and advisors, and individual investors globally. Founded in 1936, Russell is a subsidiary of The Northwestern Mutual Life Insurance Company.

About Acorn Energy, Inc.
Acorn Energy, Inc. (NASDAQ: ACFN) is a holding company focused on making energy better by providing digital solutions for energy infrastructure asset management. The four businesses in which it has controlling interests improve the world's energy infrastructure by making it: more secure - providing security solutions for underwater energy infrastructure (DSIT); more reliable - providing condition-based monitoring to critical assets on the electric grid (GridSense and OmniMetrix) and more productive and efficient - increasing oil and gas production while lowering costs through use of permanent ultra-high sensitive seismic tools that allow for a more precise picture of reservoirs (US Seismic). For more information visit: http://www.acornenergy.com.

Safe Harbor Statement
This press release includes forward-looking statements, which are subject to risks and uncertainties. There is no assurance that Acorn Energy, Inc. or its operating companies will continue to grow their respective businesses, or that any of them will meet the expectations or execute the initiatives described or referred to above. A complete discussion of the risks and uncertainties which may affect Acorn Energy's business generally and the businesses of its subsidiaries is included in "Risk Factors" in its most recent Annual Report on Form 10-K and its 2012 First Quarter 10-Q as filed by Acorn Energy with the Securities and Exchange Commission.

Investor & Press Contact:
Paul G. Henning
Cameron Associates
(212) 554-5462
[email protected]

SOURCE Acorn Energy, Inc.