Exhibit 99.1

POWERSECURE REPORTS FOURTH QUARTER 2014 RESULTS

— Record fourth quarter revenues of $81.7 million —

— $368 million backlog represents all-time high —

—LED lighting product gross margin increases to a record 41.8 percent in fourth quarter—

—Utility Infrastructure fourth quarter gross margin improves 330 basis points over 3Q 2014—

Wake Forest, N.C. – March 4, 2015 – PowerSecure International, Inc. (NYSE: POWR) today reported its fourth quarter 2014 results. Highlights include:

“We are pleased that our execution through the second half of 2014 has translated into a record backlog and strong fourth quarter results, driven by significant improvements in the profitability of our utility infrastructure business, record LED margins and contributions from our mission critical acquisition,” said Sidney Hinton, chief executive officer of PowerSecure.

“We believe these results, combined with our record backlog, robust pipeline and strong operational focus, position PowerSecure for meaningful top and bottom line growth in 2015,” Hinton added.

Fourth Quarter 2014:

Revenues

PowerSecure’s fourth quarter 2014 (4Q 2014) revenues of $81.7 million, an increase of $8.2 million, or 11.1 percent, from the fourth quarter of 2013 (4Q 2013), were driven by a 30.0 percent year-over-year (y-o-y) increase in revenues from distributed generation products and services and a 78.8 percent y-o-y increase in revenues from energy efficiency products and services, partially offset by a 19.7 percent y-o-y decrease in revenues from utility infrastructure products and services, as shown below.

Gross Margin

GAAP gross margin as a percentage of revenue was 25.8 percent in 4Q 2014, compared to 22.4 percent in 4Q 2013. On a non-GAAP basis, excluding the cost of sales portion of the 4Q 2013 restructuring charge discussed below, gross margin as a percentage of revenue was 27.4 percent in 4Q 2013. The increase in y-o-y GAAP gross margin was due to the non-comparable 4Q 2013 restructuring charge, partially offset by lower gross margins on the mix of projects completed during the quarter, including higher amounts of solar distributed generation revenues.

Operating Expenses

Operating expenses for 4Q 2014 were $20.1 million, compared to $18.3 million on a GAAP basis and $16.7 million on a non-GAAP basis in 4Q 2013, as shown in the table below. The increase in 4Q 2014 operating expenses consists of incremental operating cost related to the acquisitions of our mission critical and retail energy services businesses during the year, increased personnel and insurance costs, as well as higher professional fees.

Operating Margin

Operating margin as a percentage of revenue was 1.2 percentage points in 4Q 2014. This compares to negative 2.5 percentage points in 4Q 2013 on a GAAP basis and positive 4.8 percentage points in 4Q 2013 on a non-GAAP basis. The increase in GAAP operating margins was driven by the increase in gross margins, and a slight decrease in operating expenses as a percentage of revenues.

Earnings Per Share

Diluted earnings per share (EPS) were $0.02 in 4Q 2014, compared to a loss of ($0.09) in 4Q 2013. Excluding the charges discussed below, non-GAAP EPS were $0.13 in 4Q 2013.

Non-GAAP Financial Measures

Non-GAAP financial measures for 4Q 2013 excluded a $4.9 million charge primarily related to the restructuring of the company’s energy efficiency LED lighting operations to position its product lines for enhanced growth and profitability. $3.7 million of this charge related to inventory and was recorded in cost of sales, and $1.2 million related to severance, facilities and equipment expenses which was recorded as “restructuring charge” in operating expense.

Non-GAAP financial measures for 4Q 2013 also excluded a one-time expense of $0.5 million to upgrade an annuity that underpins the post-retirement compensation of the company’s chief executive officer. See the non-GAAP reconciliation, below.

Capital Resources and Working Capital

The company ended 4Q 2014 with $33.8 million in cash, zero drawn on its $20 million revolving credit facility, and term debt and capital leases of $22.5 million. For the full year 2014, the company improved its working capital position resulting in cash from operations of $12.1 million. The company’s capital expenditures during 4Q 2014 were $3.8 million in total, with $1.7 million of this capital invested to deploy systems to support PowerSecure-owned long-term recurring revenue distributed generation projects, and the remaining $2.1 million primarily invested in capital improvements, purchase of equipment for its utility infrastructure business and investment in software.

Backlog

The company’s revenue backlog stands at an all-time high of $368 million, as of the company’s last new business press release on February 23, 2015. This includes new business from awards announced on December 2, 2014, December 16, 2014, January 5, 2015, January 27, 2015 and February 23, 2015. The company’s revenue backlog represents revenue expected to be recognized after December 31, 2014, for periods including the first quarter of 2015 onward.

The company’s $368 million revenue backlog and the estimated timing of revenue recognition are outlined below, including “project-based revenues” expected to be recognized as projects are completed, and “recurring revenues” expected to be recognized over the life of the underlying contracts:

Revenue Backlog expected to be recognized after December 31, 2014

Note: Anticipated revenue and estimated primary recognition periods are subject to risks and uncertainties as indicated in the Company’s safe harbor statement, below. Consistent with past practice, these figures are not intended to constitute the Company’s total revenue over the indicated time periods, as the Company has additional, regular on-going revenues. Examples of additional, regular recurring revenues include revenues from engineering fees, and service revenue, among others. Numbers may not add due to rounding.

Orders in the company’s revenue backlog are subject to delay, deferral, acceleration, resizing or cancellation from time to time, and estimates are utilized in the determination of the backlog amounts. Given the irregular sales cycle of customer orders, and especially of large orders, the revenue backlog at any given time is not necessarily an accurate indication of our future revenues.

PowerSecure Segment Results:

Distributed Generation

Distributed generation revenues in 4Q 2014 of $34.3 million reflect a 30.0 percent increase versus 4Q 2013. Total DG gross margin in 4Q 2014 was 27.8 percent compared to 42.0 percent in the same period last year. DG gross margin, not including solar projects, in 4Q 2014 was 29.9 percent compared to 43.0 percent in the same period last year.

The increase in distributed generation revenues was driven by increased data center revenues from our recently acquired mission critical business and higher solar revenues. The decrease in total distributed generation gross margin was due to the lower margin profile of our distributed generation project mix, including higher revenue from solar projects which carry lower gross margins than our core distributed generation business.

Utility Infrastructure

Utility infrastructure revenues in 4Q 2014 of $30.1 million reflect a 19.7 percent decrease versus 4Q 2013. Utility infrastructure gross margin in 4Q 2014 increased to 18.1 percent from 17.3 percent in 4Q 2013, and 14.8 percent in the third quarter of 2014.

The y-o-y decrease in UI revenues was primarily due to the company slowing its UI new business development activity to focus on improving operational efficiency. The sequential and y-o-y gross profit margin increases in UI were driven primarily by improved operational efficiency achieved in the quarter.

Energy Efficiency

Energy efficiency revenues in 4Q 2014 of $17.4 million reflect a 78.8 percent increase versus 4Q 2013. EE gross margin in 4Q 2014 increased to 35.4 percent from negative 11 percent in 4Q 2013. Excluding the restructuring charge, 4Q 2013 EE gross margin was 26.8 percent.

Approximately 48 percent of EE revenues in 4Q 2014 consisted of LED lighting sales, while the remainder came from ESCO and retail energy efficiency projects. The y-o-y increase in revenues was primarily driven by both higher LED sales to retailers and increased revenue from ESCO efficiency projects, including incremental revenue from the acquired retail energy services business. The gross margin for our LED solutions was 41.8 percent in 4Q 2014, compared to negative 64.4 percent in 4Q 2013. Excluding the restructuring charge, the gross margin for our LED solutions in 4Q 2013 was 21.1 percent. The increase in our LED lighting gross margin was driven primarily by the successful completion of our LED lighting restructuring, including decreases in cost of goods sold as a result of transitioning to a more efficient sourcing and manufacturing process.

Full Year 2014:

PowerSecure’s full year 2014 (FY 2014) revenues were $256.7 million, a decrease of $13.6 million, or 5.0 percent, over full year 2013 (FY 2013).

GAAP EPS were a loss of ($0.31) for FY 2014, compared to $0.22 for FY 2013. Excluding the charges and items discussed below, non-GAAP EPS were a loss of ($0.29) for FY 2014, compared to $0.38 for FY 2013.

Non-GAAP Financial Measures

Non-GAAP financial measures for FY 2014 and FY 2013 exclude a $0.7 million and $4.9 million respectively charge primarily related to the restructuring of the company’s energy efficiency LED lighting operations. Non-GAAP financial measures for FY 2014 and FY 2013 also excluded a one-time expense of $0.2 million and $0.6 million respectively for acquisition expenses. In addition FY 2013 non-GAAP financial measures include a one-time expense of $0.5 million to upgrade an annuity that underpins the post-retirement compensation of the company’s chief executive officer. See the non-GAAP reconciliation, below.

Conference Call Information

Company management will webcast a conference call at 5:30 p.m. ET on Wednesday, March 4, 2015. To access the live webcast, please log on to the investor section of the company’s website at http://www.powersecure.com. The call can also be accessed by dialing 888-680-0890 (or 617-213-4857 if dialing internationally) and providing pass code 47785244. If you are unable to participate during the live webcast, a replay of the conference call will be available approximately two hours after the completion of the call through midnight on March 18, 2015. To listen to the replay, dial 888-286-8010 (or 617-801-6888 if dialing internationally), and enter passcode 40705329. In addition, the webcast will be archived on the company’s website at www.powersecure.com.

About PowerSecure

PowerSecure International, Inc. is a leading provider of utility and energy technologies to electric utilities, and their industrial, institutional and commercial customers. PowerSecure provides products and services in the areas of Interactive Distributed Generation ^® (IDG^®), energy efficiency and utility infrastructure.

The company is a pioneer in developing IDG^® power systems with sophisticated smart grid capabilities, including the ability to 1) forecast electricity demand and electronically deploy the systems to deliver more efficient, and environmentally friendly, power at peak power times, 2) provide utilities with dedicated electric power generation capacity to utilize for demand response purposes and 3) provide customers with the most dependable standby power in the industry. Its proprietary distributed generation system designs utilize a range of technologies to deliver power, including renewables.

The company’s energy efficiency products and services include energy efficient lighting solutions that utilize LED technologies to improve lighting quality, and the design, installation and maintenance of energy conservation measures which we offer, primarily as a subcontractor, to large energy service company providers, called ESCOs, for the benefit of commercial, industrial and institutional customers as end users and directly to retailers.

PowerSecure also provides electric utilities with transmission and distribution infrastructure maintenance and construction services, and engineering and regulatory consulting services. Additional information is available at www.powersecure.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of and made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are all statements other than statements of historical facts, including but not limited to statements concerning the outlook for the company’s growth and profitability and its future revenues, earnings, margins, cash resources and cash flow and other financial and operating information and data; the company’s future business operations, strategies and prospects; the impact and prospects of acquisitions; strategic alliances and relationships and new business awards and projects; and all other statements concerning the plans, intentions, expectations, projections, hopes, beliefs, objectives, goals and strategies of management, including statements about other future financial and non-financial items, performance or events and about present and future products, services, technologies and businesses; and statements of assumptions underlying the foregoing.

Forward-looking statements are not guarantees of future performance or events and are subject to a number of known and unknown risks, uncertainties and other factors that are difficult to predict and

could cause actual results to differ materially from those expressed, projected or implied by such forward-looking statements. Important risks, uncertainties and other factors include, but are not limited to, the on-going uncertainty and inconsistency in the economy, financial markets and business markets and the effects thereof on the company’s markets and customers, the demand for its products and services, and the company’s access to capital; the size, timing and terms of sales and orders, including the company’s revenue backlog discussed in this press release, and the risk of customers delaying, deferring or canceling purchase orders or making smaller purchases than expected; the potential adverse financial and reputational consequences that can result from safety risks and hazards such as accidents inherent in the company’s operations; the company’s ability to execute on its business orders, awards and projects efficiently and with operational excellence, such as its recent large solar awards, in order to generate customer satisfaction, company profitability and future new business; the impact of the company’s acquisitions of the ESCO, Solais, Encari, mission critical and retail energy services businesses; the company’s ability to reduce and control its costs and expenses and enhance its operating income; the company’s ability to maintain and grow its utility infrastructure revenues on a profitable basis, including maintaining and improving its pricing, utilization rates and productivity rates; the impact of the company’s restructuring actions on its LED lighting operations; the timely and successful development, production and market acceptance of new and enhanced products, services and technologies of the company; the ability of the company to obtain adequate supplies of key components and materials of sufficient reliability and quality for its products and technologies on a timely and cost-effective basis and the effects of related warranty claims and disputes; the ability of the company to successfully expand its core distributed generation products and services, to successfully develop and achieve market acceptance of its new energy-related businesses, to successfully expand its recurring revenue projects, to manage its growth and to address the effects of any future changes in utility tariff structures and environmental requirements on its business solutions; the effects of competition; changes in customer and industry demand and preferences; the ability of the company to continue the growth and diversification of its customer base; the ability of the company to attract, retain, and motivate its executives and key personnel; changes in the energy industry in general and the electricity, oil, and natural gas markets in particular, including price levels; the effects of competition; the ability of the company to secure and maintain key contracts and relationships; the effects of pending and future litigation, claims and disputes including the securities class action; and other risks, uncertainties and other factors identified from time to time in its reports filed with or furnished to the Securities and Exchange Commission, including the company’s most recent Annual Report on Form 10-K, as well as subsequently filed reports on Form 10-Q and Form 8-K, copies of which may be obtained by visiting the investor relations page of the company’s website at www.powersecure.com or the SEC’s website at www.sec.gov.

Accordingly, there is no assurance that the results expressed, projected or implied by any forward-looking statements will be achieved, and readers are cautioned not to place undue reliance on any forward-looking statements. The forward-looking statements in this press release speak only as of the date hereof and are based on the current plans, goals, objectives, strategies, intentions, expectations and assumptions of, and the information currently available to, management. The company assumes no duty or obligation to update or revise any forward-looking statements for any reason, whether as the result of changes in expectations, new information, future events, conditions or circumstances or otherwise.

Contact:

John Bluth

PowerSecure International, Inc.

(919) 453-2103

PowerSecure International, Inc.

Condensed Consolidated Balance Sheets (unaudited)

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Condensed Consolidated Statements of Operations (unaudited)

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Condensed Consolidated Statements of Cash Flows (unaudited)

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Non-GAAP Pro forma Financial Measures:

Our references to our fourth quarter and full year 2014 and our fourth quarter and full year 2013 “non-GAAP pro forma” financial measures of cost of sales, gross margins, gross margins as a percentage of revenue, operating expenses, operating expenses as a percentage of revenue, operating income, operating income as a percentage of revenue, net income, net income attributable to PowerSecure International, Inc., and diluted EPS. discussed and shown in this report constitute non-GAAP financial measures.

For the fourth quarter of 2014, our non-GAAP financial measures refer to our GAAP results, excluding a one-time expense of $0.1 million related to the acquisition of the mission critical and retail energy services transactions.

For the fourth quarter of 2013, our non-GAAP financial measures refer to our GAAP results, excluding a $4.9 million charge primarily related to the restructuring of the company’s energy efficiency LED lighting operations to position its product lines for enhanced future growth and profitability. The restructuring was implemented to realize the manufacturing and sourcing synergies contemplated by the company in its 2013 acquisition of Solais Lighting. The actions taken included eliminating certain duplicative facilities, resourcing from new lower cost suppliers, reducing the number of product offerings, and reducing personnel and overhead. $3.7 million of this charge relates to inventory and was recorded in cost of sales, and $1.2 million relates to severance, facilities and equipment expenses which was recorded as “restructuring charge” in operating expense. Fourth quarter 2013 non-GAAP financial measures also exclude a one-time expense of $0.5 million to upgrade an annuity that underpins the post-retirement compensation of our chief executive officer to fully guarantee future payments.

For the full year 2014, our non-GAAP financial measures exclude a $0.7 million charge primarily related to the restructuring of the company’s energy efficiency LED lighting operations to position its product lines for enhanced future growth and profitability. The restructuring was implemented to realize the manufacturing and sourcing synergies contemplated by the company in its 2013 acquisition of Solais Lighting. The actions taken included eliminating certain duplicative facilities, re-sourcing from new lower cost suppliers, reducing the number of product offerings, and reducing personnel and overhead. $0.3 million of this first quarter 2014 charge relates to inventory and was recorded in cost of sales, and $0.4 million relates to severance, facilities and equipment expenses which was recorded as “restructuring charge” in operating expense. Our full year 2014 non-GAAP financial measures exclude one-time acquisition expenses of $0.2 million related to the mission critical and retail energy services transactions.

For the full year 2013, our non-GAAP financial measures refer to our GAAP results, excluding a $4.9 million charge primarily related to the restructuring of the company’s energy efficiency LED lighting operations to position its product lines for enhanced future growth and profitability. $3.7 million of this charge relates to inventory and was recorded in cost of sales, and $1.2 million relates to severance, facilities, and equipment expenses which was recorded as “restructuring charge” in operating expense. Our full year 2013 non-GAAP financial measures also exclude a one-time expense of $0.5 million to upgrade an annuity that underpins the post-retirement compensation of the company’s chief executive officer to fully guarantee future payments, and acquisition expenses of $0.6 million related to the Solais, energy efficiency services, Encari and PowerLine transactions.

We believe providing non-GAAP measures which show our pro forma results with these items adjusted is valuable and useful as it allows our management and our board of directors to measure, monitor and evaluate our operating performance in 2013, 2014, and in future periods with the same consistent financial context as the business was managed in those periods. Additionally, because these items were non-recurring, our non-GAAP pro forma measures are more comparable to our prior period and future period results.

We believe these non-GAAP pro forma measures also provide meaningful information to investors in terms of enhancing their understanding of our fourth quarter and full year 2014, and fourth quarter and full year 2013 operating performance and results, as they allow investors to more easily compare our financial performance on a consistent basis compared to the prior year periods. These non-GAAP pro forma measures also correspond with the way we expect investment analysts to evaluate and compare our results. Our non-GAAP pro forma measures should be considered only as supplements to, and not as substitutes for or in isolation from, or superior to, our other measures of financial information prepared in accordance with GAAP, such as GAAP revenue, cost of sales, gross margin, gross margin as a percentage of revenue, operating expenses, operating expenses as a percentage of revenue, operating income, operating income as a percentage of revenue, net income, net income attributable to PowerSecure International, Inc., and diluted EPS.

The following table provides a reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures.

PowerSecure International, Inc.

Non-GAAP Pro forma Measures

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Adjusted EBITDA (Earnings before Interest, Taxes, Depreciation and Amortization, and Charges)

Calculations and Reconciliation

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