Warren Buffett and Charlie Munger revealed over the weekend that Greg Abel, the CEO of Berkshire Hathaways vast electric power generation business would be taking over from them some day. "The directors are in agreement that if something were to happen to me tonight it would be Greg whod take over tomorrow morning," Buffett said.

With that ended years of speculation on one of the closest kept secrets in finance. Abel, at 58, is a spring chicken compared with Buffett, 90, and Munger, 97. And hes different in a another way: hes not naturally a stock picker and asset allocator, rather hes a business operator.

So dont expect Abel to pick stocks (that role looks likely to remain with Todd Combs and Ted Weschler), but rather to keep building his energy businesses. Abel has already been instrumental in assembling a family of electric utilities that as a standalone company would be among the nations biggest, with 33,000 megawatts of generation, 21,000 miles of natural gas transmission lines and 5.2 million customers. And its an important cash generator, contributing $21 billion in revenues last year and $2.5 billion in pretax earnings.

That dramatically changes the general character of what Berkshire Hathaway will be and what the investment motivation of owning it will be, says Bill Smead of Smead Capital Management, which has held Berkshire shares for decades. Warren has always kind of been the secret sauce, he adds. Without him, there just wont be any magic attached to it.

That said, Smead thinks the shift makes sense, because low interest rates and high equity valuations have left them no fish in the barrel left for them to shoot with energy being somewhat of an exception. Regulated monopolies tend to be resistent both to recessions and to inflation. Plus, capital is in hot demand for heavily subsidized decarbonization investments. Last year Berkshire dropped $8 billion on Dominion Energys D gas pipeline business. In recent months Berkshire has announced its willingness to invest another $8 billion to build 10 new gas-fired power plants in Texas.

Speaking over the weekend, Abel said that the Texas power grid fundamentally let the citizens down in not being resilient enough to withstand the February deep freeze. "We've gone to Texas with what we believe is a good solution," he said. "The health and welfare of Texas was at risk, and we needed to effectively have an insurance policy in place for them."

Abel was born in Edmonton, Alberta and graduated 1984 from the University of Alberta. He worked at accountancy PriceWaterhouseCoopers, then landed at geothermal company CalEnergy before joining MidAmerican Energy in 1992. Berkshire acquired the company for $2 billion in 2000 as part of Buffetts initial rollup of electric utilities. In 2005 they bought Pacificorp from Scottish Power for $5.1 billion. In 2011 Abel replaced David Sokol as CEO of Berkshire Energy (after revelations that Sokol bought $10 million in Lubrizol LZ stock before recommending Berkshire acquire the company). Theyve since acquired the Topaz solar farm for $2 billion, NV Energy in 2013 for $5.6 billion, and in 2014 bought Canadian power distributor Altalink for $2.9 billion. By 2015 Berkshire had developed half of Iowas wind farms.

Buffett has called Abel an excellent deal maker. Thats in part because he knows when to walk away. In 2017 it looked as if Berkshire was set to acquire Texas electric distribution company Oncor for $9 billion. But the deal didnt go through Sempra swooped in with a $9.5 billion bid (plus the assumption of $9 billion in debt). Berkshire didnt see the point in trying to top them the would point of the deal had been to Oncor at a good price.

In 2018 Abel was appointed Berkshire vice chairman, alongside Ajit Jain, 69, head of insurance operations. Both have Berkshire in their blood, Buffett said at the time. "He's a first-class human being," Buffett said about Abel in a 2013 video. "There's a lot of smart people in this world, but some of them do some very dumb things. He's a smart guy who will never do a dumb thing."

In the first quarter of 2021 Berkshires energy business delivered $703 million in net earnings compared with $561 million a year ago. Abel has reduced Berkshires coal-fired power generation by nearly half in recent years.

Investor Smead predicts that Abel and Berkshire will be very patient in looking for acquisitions, likely waiting for interest rates to go up a couple hundred basis points, which could loosen up market values.

The timing might not be right for Berkshire to make a big electric company acquisition right now but that doesnt necessarily mean you have to wait. Tim Porter, chief investment officer at Reaves Asset Management, thinks there are ample opportunities for regulated utilities to generate outsized returns by investing for decarbonization into wind, solar and batteries. The grid is old and will need a lot of investment to accomodate new power, says Porter, whose favorites include Wisconsins WEC Energy WEC , which is investing $16 billion into renwables, while mothballing old coal-fueled plants. Xcel Energy XEL recently reached a milestone of 10,000 megawatts of wind turbines. Alliant LNT is accelerating its phase out of coal and already get 30% of their power from renewables. While Ameren AEE is early in its transition and has just begun investing $4.5 billlion into wind and solar. All sport p/e ratios around 25 and dividend yields just below 3%.

Berkshire Hathaway meanwhile traded at $421,000 today, at 25 times expected 2021 earnings. Shares are up 60% in one year.