Are You Making The Biggest Mistake In MLP Investing?

Master limited partnerships (MLPs) have been the hottest sector within the U.S. energy revolution theme over the past several years.

Units of these companies give investors exposure to the infrastructure that is driving U.S. energy independence while benefiting from volume-based contracts and stable income.

Shares of the ALPS Alerian MLP Fund (NYSE: AMLP) are up nearly 5% over the past year on top of the 5.8% yield. Units of individual partnerships are soaring as the hunt for assets drives mergers and acquisitions. Units of Williams Cos. (NYSE: WMB) are up more than 75% over the past year on higher distribution and a merger with Access Midstream Partners (NYSE: ACMP).

The United States has surpassed Saudi Arabia as the world's largest oil producer, and the growing demand for energy transportation and storage should continue to drive distribution growth in the sector.

That is great news for unitholders -- but one hidden condition in the business model for these partnerships could soon create a conflict... and take money from your pocket.

As my colleague Chuck Marvin wrote recently, MLPs own pipeline and storage assets but many have no employees. A general partner (GP) manages the day-to-day operations and is entitled to a 2% equity position in the limited partnership. As the volume of energy products moving through the partnership's assets increase, the general partner increases the distribution of income to unitholders.

In addition to the equity position, the general partner often is entitled to incentive distribution rights (IDR), which increases when the distribution increases.

And that is where the problem starts.

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As an example, consider the IDR schedule for Tallgrass Energy Partners (NYSE: TEP):

As the distribution is increased, the GP is entitled to a larger share of the total payout. The IDR incentivizes the GP to increase the distribution, which puts more cash in unitholders' pockets -- but it may also create a conflict of interest.

The GP may increase the distribution to unsustainable levels to reach the next tier in the IDR schedule. In fact, many investors have started to question capital spending in the space.

A GP may be able to artificially boost distributions by cutting investment in maintenance or new assets. Unitholders would see a short-term bump in income, but the partnership would have to cut distributions over the long term on maturing assets and lack of growth.

Tallgrass Energy Partners has more than doubled its distribution in less than a year. The most commonly used metric, the ratio of distribution to the distributable cash flow (DCF), shows that the partnership covers its distribution by more than 1.5 times. This is around the industry average and would not raise any liquidity alarms for investors since cash flow more than covers the amount paid out to unitholders.