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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

  • South Korea Could Lead the Way in a Successful Nuclear Renaissance

    Published 22 July 2024 | viewed 1,933 times

    The Czech government (which controls power company CEZ) has chosen South Korea’s Korea Hydro and Nuclear Power (KHNP) to build up to four new gigawatt-scale…

  • Utilities Must Adapt, Not Just Respond To Extreme Weather

    Published 18 July 2024 | viewed 763 times

    After electricity is restored in Houston, people may ask with respect to future electricity reliability: what’s next? Well, in Houston we would characterize Centerpoint’s response…

  • Houston we Have a Problem

    Published 13 July 2024 | viewed 7,556 times

    Hurricane Beryl barreled through Houston last Monday leaving over three million electric utility customers without power in the sweltering summer heat. Hurricanes, despite appearing with…

  • Courts Take Charge: Implications of SCOTUS Dismantling Chevron Deference

    Published 01 July 2024 | viewed 1,954 times

    The U.S. Supreme Court overturned two staples of the regulatory system. the so-called Chevron deference, which calls upon the courts to defer to the expertise…

  • Equinor Fights NIMBY Feelings in New York Battery Storage Project

    Published 18 June 2024 | viewed 1,550 times

    The Not in My Back Yard (NIMBY) movement has targeted nuclear power plants, high voltage transmission lines, windmills and solar farms, demanding that builders just…

  • 4 Questions About the Future of Electricity

    Published 11 June 2024 | viewed 2,204 times

    With summer heating up, Donald Trump promising more deregulation if he wins, and record storms causing blackouts leaving multitudes in sweltering darkness, we decided to…

  • Say Goodbye to Utility Stock Dividends

    Published 10 June 2024 | viewed 6,728 times

    U.S. electric utility stocks have been in the new part of two emerging trends, the development of data centers with large energy consumption needs as…

  • Did Investors Overreact to National Grid’s Shock Announcement?

    Published 27 May 2024 | viewed 3,403 times

    National Grid, one of the two surviving listed companies from Thatcher’s privatization of the electricity industry, is a giant firm that owns the electric transmission…

  • What’s Really Wrong with Thames Water?

    Published 22 May 2024 | viewed 2,003 times

    Thames Water again? We’re not in the water business. But this story has a moral, so read on. There are many reasons for the current…

  • Are Hybrids and EVs Incompatible?

    Published 21 May 2024 | viewed 2,964 times

    The trade writers and auto guys have changed their tune. Before, hybrid vehicles supposedly were a technological dead end with nowhere to go. Electric vehicles…

  • Tesla Downgrades Recharging

    Published 09 May 2024 | viewed 10,620 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 1,972 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 3,965 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 1,406 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 2,288 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 8,917 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 5,135 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 1,487 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 10,483 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 8,390 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…

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