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Leonard Hyman & William Tilles

Contributor since: 08 Dec 2015

Leonard Hyman & William Tilles

Leonard S. Hyman is an economist and financial analyst specializing in the energy sector. He headed utility equity research at a major brokerage house and has provided advice on industry organization, regulation, privatization, risk management  and finance to  investment bankers,  governments and private firms, including one effort to place nuclear fusion reactors on the moon. He is a Chartered Financial Analyst and author, co-author or editor of six books including  America’s Electric Utilities: Past, Present and Future and  Energy Risk Management: A Primer for the Utility Industry. 

You can find Leonard Hyman's lastest book Electricity Acts on Amazon 


William I. Tilles is a senior industry advisor and speaker on energy and finance. After starting his career at a bond rating agency, he turned to equities and headed utility equity research at two major brokerage houses and then became a portfolio manager investing in long/short global utility equities. For a time he ran the largest long/short utilities equity book in the world. Before going into finance, Mr. Tilles taught political science .

Latest articles from Leonard Hyman & William Tilles

  • Tesla Downgrades Recharging

    Published 09 May 2024 | viewed 10,563 times

    Tesla just fired the staff in charge of its recharging network? No explanation. Best explanation: recharging stations lose money. There’s a chicken and egg problem…

  • Four Big Mistakes in Deregulating the Electricity Industry

    Published 23 April 2024 | viewed 1,912 times

    When policymakers both here and abroad deregulated and restructured the electricity industry they made four big mistakes. And we are still living with them.    Number…

  • Sao Paulo's Power Grid Nears Breaking Point

    Published 10 April 2024 | viewed 3,913 times

    Dark days ahead in São Paulo, the industrial and commercial hub of Brazil. They noticed last month, after a three day blackout hit the city’s…

  • What Does Renationalizing Thames Water Mean?

    Published 08 April 2024 | viewed 1,376 times

    For weeks, now, British editors, letter writers and resident economic thinkers in the government have been debating how to preserve Thames Water as an investor-owned…

  • Thames Water Debacle: A Lesson in Regulation and Utility Mismanagement

    Published 02 April 2024 | viewed 2,220 times

    The big Cambridge-Oxford boat race on the Thames is the posh British equivalent of March Madness. But there was a big problem this year. The…

  • Shell Oil Revises its Climate Goals

    Published 01 April 2024 | viewed 8,854 times

    Shell Oil Company recently released a revised version of climate-related goals entitled  “Shell Energy Transition Strategy 2024”. This is Shell’s first strategy revision since 2021.…

  • Why Do we Still Have Investor-Owned Utilities?

    Published 21 March 2024 | viewed 5,024 times

    The electricity and water utility industries are mirror images in a way. Government agencies service roughly 85% of water consumers and investor-owned companies the rest.…

  • Texas Wildfires Underscore Increasing Risk for Utilities

    Published 07 March 2024 | viewed 1,453 times

    Warren Buffett fretted, in his annual report, that wildfires threatened his electric utility investments. He specifically cited the stock price carnage experienced by two US…

  • Warren Buffett Regrets Owning Electric Utilities

    Published 27 February 2024 | viewed 10,302 times

    Every year investors eagerly anticipate the arrival of Warren Buffett’s annual letter to Berkshire Hathaway shareholders. In this year’s letter, after discussing favorite companies like…

  • Gold Hydrogen Could Be A Game-Changer for Energy Markets

    Published 20 February 2024 | viewed 8,338 times

    For some time now, we’ve seen the race to develop non-fossil energy technology heat up, most emphatically in the nuclear arena. Large engineering firms have…

  • Is this the World's Most Expensive and Most Delayed Power Project?

    Published 31 January 2024 | viewed 6,427 times

    Yes, they are still building the Hinckley Point C nuclear power station in the United Kingdom, and yes the latest estimated cost is more than…

  • Explaining ExxonMobil’s Pre-Emptive Attack on Shareholder Activists

    Published 25 January 2024 | viewed 2,642 times

    We should not have been surprised. Not in an era when people only watch MSNBC or Fox and college students avoid classes that might trigger…

  • Is the Texas Grid Ready for This Year’s Polar Vortex?

    Published 15 January 2024 | viewed 5,860 times

    In what now seems an almost annual event, Texas, the Midwest, and the Deep South are anticipating another episode of extreme cold, this time starting…

  • Huge Capital Investment Required for U.S. Electric Industry's Decarbonization

    Published 27 December 2023 | viewed 2,104 times

    When the COP 28 conference adjourned a short while ago, we concluded that the world’s electric industry would not decarbonize fast enough to make electrification…

  • Ten Improbable Energy Ideas for 2024

    Published 26 December 2023 | viewed 6,489 times

    Nowadays, you have to prepare for the unexpected, for the event that seems barely plausible but happens.  Such as the way Russia did not conquer…

  • The Big Problem With Electrifying Everything

    Published 20 December 2023 | viewed 6,147 times

    The UN-sponsored COP28 climate conference has issued a number of proposals for reducing CO2 emissions, some criticized as too weak, others as too radical. But…

  • Oil Executives Must Review Their Portfolios

    Published 18 December 2023 | viewed 3,337 times

    Here’s for an orderly transition The COP 28 climate summit recently adjourned called for “transition away from fossil fuels  … in a just, orderly and…

  • Big Oil Acquisitions Are Strikingly Similar To Big Tobacco’s Moves

    Published 10 December 2023 | viewed 8,640 times

    While you have been eagerly following the sterile debate in Doha about whether to phase out or phase down fossil fuels, you probably missed an…

  • Does Coal Have a Future in Power Generation?

    Published 02 December 2023 | viewed 4,172 times

    Hard to believe, but some global mining and trading houses have been hard at work trying to build up their coal holding, especially coal destined…

  • Does the Natural Gas Industry Have a Future?

    Published 27 November 2023 | viewed 10,628 times

    The natural gas industry’s domestic sales pattern over the past two decades makes one wonder whether the industry has much of a future. Okay, sales…

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