Roger S. Conrad

Utility history is rife with poor diversification, and that appears to be the consensus bet against WGL Holdings (NYSE: WGL), the regulated gas distribution company for the District of Columbia, suburban Maryland and Northern Virginia. But an A+ rating on top of an attractive yield could change skeptics' minds.

As a long-time shareholder of Berkshire as well as many utilities, I’m encouraged. I’m skeptical of some of the names being floated as MidAmerican’s next potential targets. But the feature article highlights several companies that fit the mold of NV Energy and PacifiCorp, which Berkshire bought in March 2006 from the former ScottishPower.

MidAmerican earned $1.47 billion in 2013 as one of Berkshire’s “Powerhouse Five” non-insurance businesses. That was approximately 7.5 percent of the company’s overall profit, a share that will rise to around 10 percent in 2014, thanks to a full year of owning NV Energy.

Even after the next acquisition, electric utility assets will be less significant to Berkshire’s fortunes than insurance, or even railroads (20 percent of profits). But there are two clear takeaways from Mr. Buffett’s continuing interest in the power sector.

First, MidAmerican is likely to buy another utility this year, handing investors windfall gains. Second, there are regulated electricity assets that still meet the criteria of the world’s most successful value investor.

Every portfolio has winners and losers. The key is knowing when to let the best performers run, and cut the worst loose.

Closed-end bond funds have pulled back over the past 12 months in anticipation of rising interest rates. Investors eyeing these funds' high yields should proceed with caution.

Rising interest rates don't necessarily sound the death knell for dividend-paying stocks.

The resulting 99.1 percent boost in fourth quarter revenue wasn’t enough to answer several nagging questions about SolarCity’s long-run sustainability as an enterprise.

Janet Yellen acknowledged that the Fed might start to raise interest rates six months after phasing out its bond-buying program toward the end of 2014. Take advantage of the selloff in dividend-paying stocks to add high-quality names.

NRG Energy (NYSE: NRG) has roughly matched the 13 percent average return of my Aggressive Holdings since July 31, 2013—when the Portfolio was formed. Three developments over the past week, however, promise to propel the stock much higher, earning it a higher buy up to target of 32.

Thanks again to everyone who tuned in to my second on-line chat for Conrad’s Utility Investor subscribers last week. The full transcript of the 4-hour question and answer session is now available on the CUI website by clicking on the “Events” tab from the home page.

Mention master limited partnerships and sooner or later someone will bring up taxes. The big worry: A US version of Canada’s infamous Halloween Massacre of 2006, which shaved $24 billion off the value of income trusts in two weeks.