Exhibit 99.1

FOR IMMEDIATE RELEASE

CORRECTING and REPLACING New Source Energy Partners Reports Year-End 2012 Results, Reiterates 2013 Guidance

OKLAHOMA CITY, April 17, 2013 —(BUSINESS WIRE)— Third graph, first sentence following the 2012 Results heading had a typographical error. The sentence should read: Total crude oil production was 61,010 Bbls during the year ended December 31, 2012, an increase of 25% from the year ended December 31, 2011, primarily as a result of development and production from a portion of the Hunton reservoir containing a higher concentration of oil (sted: Crude oil production was 61,010 Bbls per day during the year ended December 31, 2012, an increase of 25% from the year ended December 31, 2011, primarily as a result of development and production from a portion of the Hunton reservoir containing a higher concentration of oil).

The corrected release reads:

NEW SOURCE ENERGY PARTNERS REPORTS YEAR-END 2012 RESULTS, REITERATES 2013 GUIDANCE

New Source Energy Partners L.P., a Delaware limited partnership (NYSE: NSLP) (the “Partnership” or “New Source”), today announced financial and operating results for the year ended December 31, 2012. New Source closed its initial public offering of common units on February 13, 2013, and the results expressed herein are those attributable to the properties contributed to New Source in connection with its initial public offering.

2012 Highlights

Adjusted EBITDA (as defined below) was $29.8 million for the year ended December 31, 2012 “We are pleased with the successful completion of our initial public offering in February and are encouraged by our rapid progress to grow the partnership since that time,” said Kristian Kos, President and Chief Executive Officer of New Source Energy GP, LLC, the general partner of the Partnership. “We have a solid asset base in the Hunton reservoir and multiple growth opportunities in front of us. We look forward to continuing to grow and shape our partnership for the benefit of our unit holders.”

2013 Guidance Highlights

The second quarter 2013 guidance included below is subject to the cautionary statements and limitations described under the “Forward-Looking Statements” caption at the end of this press release. The Partnership’s second quarter 2013 guidance for production levels is based on assumptions of capital expenditure levels and the assumption that market demand and prices for oil and natural gas will continue at levels that allow for economic production of these products.

New Source is reiterating guidance of

2012 Results

Adjusted EBITDA was $29.8 million for the year ended December 31, 2012 as compared to $32.3 million for the year ended December 31, 2011. Net income was $3.1 million for the year ended December 31, 2012 compared to a loss of $1.1 million for the year ended December 31, 2011. Net income in 2012 was primarily due to derivative gains, partially offset by lower revenues and by higher administrative costs.

For the year ended December 31, 2012, revenues from oil and natural gas operations were approximately $35.6 million, a decrease of 23% compared to the year ended December 31, 2011. The decrease in revenues during 2012 was largely the result of significantly lower average prices of natural gas and NGLs, which were 28% and 26% lower, respectively, than those for 2011.

Total crude oil production was 61,010 Bbls during the year ended December 31, 2012, an increase of 25% from the year ended December 31, 2011, primarily as a result of development and production from a portion of the Hunton reservoir containing a higher concentration of oil . Natural gas production amounted to 2.3 Bcf during the year ended December 31, 2012, a decrease of 4% from the year ended December 31, 2011. Natural gas liquids production was 711,195 Bbls for the year ended December 31, 2012, a decrease of 1% from the year ended December 31, 2011. Production costs decreased on an equivalent basis from $6.76 per Boe to $5.40 per Boe primarily as a result of fewer required workovers in 2012.

Cash Distributions

The Board of Directors has declared a prorated cash distribution for the first quarter of 2013 of $0.27417 per unit. This distribution is the first declared by the partnership and corresponds to the minimum quarterly distribution of $0.525 per unit, or $2.10 on an annualized basis, prorated from the February 13, 2013 closing of the Partnership’s initial public offering through March 31, 2013. The distribution will be paid on May 15, 2013 to all unit holders of record on May 1, 2013.

In addition, following completion of the acquisition announced on April 1, 2013, management intends to recommend to the Board of Directors of the general partner to increase the second quarter 2013 distribution to $0.55 per unit, or $2.20 per year on an annualized basis, for all outstanding units and the third quarter 2013 distribution to $0.575 per unit, or $2.30 per year on an annualized basis, for all outstanding units.

Conference Call

A conference call for investors will be held today at 10:00 a.m. Central Time (11:00 a.m. Eastern Time) to discuss New Source’s fourth quarter and year-end 2012 results. Hosting the call will be Kristian B. Kos, President and Chief Executive Officer and Richard D. Finley, Treasurer and Chief Financial Officer.

The call can be accessed live over the telephone by dialing (877) 407-0789, or for international callers, (201) 689-8562. A replay will be available shortly after the call and can be accessed by dialing (877) 870-5176, or for international callers, (858) 384-5517. The passcode for the replay is 412222. The replay will be available until April 24, 2013.

Interested parties may also listen to a simultaneous webcast of the conference call by logging onto New Source’s website at www.newsource.com in the Investors–Presentations section. A replay of the webcast will also be available for approximately 30 days following the call.

About New Source Energy Partners L.P.

New Source Energy Partners L.P. is an independent energy company focusing on delivery through streamlined operations and vertically integrated infrastructure. The Partnership is actively engaged in the development and production of our onshore oil and liquids-rich portfolio that extends across conventional resource reservoirs in east-central Oklahoma. For more information on the Partnership please visit www.newsource.com.

Forward-Looking Statements

This news release contains “forward-looking statements” which are based on current plans and expectations and involve a number of risks and uncertainties that could cause actual results and events to vary materially from the results and other statements contained in this press release. For a full discussion of these risks and uncertainties, please refer to the “Risk Factors” section of the Partnership’s Annual Report on Form 10-K for the year ended December 31, 2012 and the information included in the Partnership’s quarterly and current reports and other public filings. These forward-looking statements are based on and include the Partnership’s expectations as of the date hereof. Subsequent events and market developments could cause the Partnership’s expectations to change. While the Partnership may elect to update these forward-looking statements at some point in the future, the Partnership specifically disclaims any obligation to do so, even if new information becomes available, except as may be required by applicable law.

The SEC permits oil and gas companies, in their filings with the SEC, to disclose only “reserves” as defined by SEC rules. Estimates of reserves in this press release are based on various assumptions, including assumptions related to oil and natural gas prices, drilling and operating expenses, capital expenditures, taxes and availability of funds.

Use of Non-GAAP Financial Measures

New Source reports its financial results in accordance with generally accepted accounting principles in the United States, or GAAP. New Source also presents the non-GAAP financial measures of Adjusted EBITDA. New Source defines Adjusted EBITDA as earnings before interest expense, income taxes, depreciation, depletion and amortization, accretion expense, non-cash compensation expense and unrealized derivative gains and losses.

New Source believes that the presentation of these non-GAAP financial measures will provide useful information to investors in assessing our results of operations. A reconciliation of Adjusted EBITDA to net income, the most directly comparable GAAP measure, is included in this release. Adjusted EBITDA should not be considered as an alternative to the most directly comparable GAAP financial measure, because it excludes some but not all items that affect the most directly comparable GAAP financial measure, net income. You should not consider Adjusted EBITDA or distributable cash flow in isolation or as a substitute for analysis of our results as reported under GAAP. Because Adjusted EBITDA may be defined differently by other companies in our industry, New Source’s definition may not be comparable to similarly titled measures of other companies, thereby diminishing their utility.

New Source Energy Partners L.P. - Investor & Media Contact

Nick Hodapp

Director of Investor Relations

(405) 272-3028

nhodapp@newsource.com

Properties Contributed to New Source Energy Partners, L.P.

Results of Operations

(in thousands)

Properties Contributed to New Source Energy Partners L.P.

Summary of Balance Sheet Data

(in thousands)

Properties Contributed to New Source Energy Partners L.P.

Summary of Cash Flow Data

(in thousands)

Reconciliation of Non-GAAP Financial Measures

Properties Contributed to New Source Energy Partners, L.P.

Total Proved Reserves