Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We have issued our reports dated August 31, 2010, with respect to the consolidated financial
statements, accompanying financial statement schedule, and internal control over financial
reporting (which internal control report included an adverse opinion) included in the Annual Report
on Form 10-K of Energy Conversion Devices, Inc. and subsidiaries for the year ended June 30, 2010
which are incorporated by reference in this Registration Statement. We consent to the incorporation
by reference in the Registration Statement of the aforementioned reports, and to the use of our
name as it appears under the caption Experts.
/s/ GRANT THORNTON LLP
Southfield, Michigan
February 11, 2011