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Hartmut Winkler

Professor of Physics, University of Johannesburg
A lifelong academic who served stints as Dean of Science and acting Deputy Vice-Chancellor: Academic at the former Vista University in South Africa and was until recently the Head of Physics at the University of Johannesburg.

Research interests range from astrophysics through to atmospheric physics, solar energy and energy supply.

A vocal commentator on South African energy issues, especially the renewables versus nuclear debate.

South Africa’s electricity crisis: what political parties say in their election manifestos about solving it

Mar 28, 2024 12:04 pm UTC| Insights & Views Politics

South Africa is in the middle of a deep electricity crisis. In 2023 the public, many of whom are voters, experienced the worst loadshedding to date, losing power for an average of five hours a day. The power shortages...

South Africa's new plan to end power cuts is seriously flawed. Here's why

Jan 09, 2024 23:03 pm UTC| Economy

South Africa experienced unprecedented electricity shortages in 2023 as ageing coal plants became increasingly prone to breakdowns. The country urgently needs to develop new electricity generation facilities and reduce...

South Africa power outages: some improvement but a long way to go before the grid is stable

Nov 01, 2023 07:12 am UTC| Economy

Over the past few months, South Africas power generation sector has performed better than expected. Four factors explain this: an acceleration of solar power installations, less frequent breakdowns at power stations, a...

South Africa's nuclear sector has failed its test: the Koeberg nuclear plant life extension

Aug 21, 2022 17:23 pm UTC| Science Economy

South Africas only nuclear power plant, Koeberg, has frequently been in the news in 2022, all for the wrong reasons. Its operating licence expires in 2024, and its continued operation thereafter depends on critical...

Global Geopolitics Series

Russia's nuclear power exports: will they stand the strain of the war in Ukraine?

Mar 07, 2022 10:13 am UTC| Politics

Russias invasion of the Ukraine has led to massive sanctions and resulted in heavy blows to its economy. It has also led to unprecedented condemnation of Russias leadership, as well as growing international...

Power shortages will remain a big challenge in a post-COVID-19 South Africa

Apr 21, 2020 12:42 pm UTC| Economy

The decline in economic activity precipitated by the spread of COVID-19 and ensuing lockdown in South Africa is also affecting the countrys electricity supply dynamics. The power outages that were disrupting the economy...

Economy

Chinese EV Stocks Surge as EU Signals Path to Avoid Import Tariffs

Shares of major Chinese electric vehicle (EV) manufacturers climbed sharply on Tuesday after the European Commission outlined conditions that could allow China-based automakers to avoid import tariffs in the European...

Asian Currencies Weaken as Yen Slides to One-Year Low Amid Oil Price Surge and U.S. Political Risks

Most Asian currencies declined on Tuesday, led by a sharp fall in the Japanese yen, as rising oil prices linked to unrest in Iran and renewed U.S. political and trade uncertainty dampened investor sentiment across the...

Trump Administration Faces Backlash Over Criminal Probe Into Fed Chair Jerome Powell

The Trump administrations decision to launch a criminal investigation into Federal Reserve Chair Jerome Powell has triggered strong criticism from former central bank leaders, Republican lawmakers, and global financial...

Asian Stocks Rise as Tech Rally and Japan Election Speculation Lift Markets

Asian stock markets advanced on Tuesday, led by strong gains in technology shares as optimism around artificial intelligence continued to drive investor sentiment. Japans Nikkei 225 index was the standout performer,...

Oil Prices Climb for Fourth Session as Iran Unrest and Supply Risks Fuel Market Fears

Oil prices continued to rise during Asian trading on Tuesday, extending gains for a fourth consecutive session as mounting geopolitical tensions and global supply disruption risks lifted market sentiment. Brent crude and...

Politics

Trump Administration Weighs Diplomacy and Military Options as Iran Nuclear Tensions Rise

Senior officials in President Donald Trumps administration are reportedly debating how best to respond to escalating tensions with Iran, as questions grow over Tehrans nuclear program and the possibility of U.S. military...

NYC Nurses Strike Shuts Down 10 Private Hospitals as 15,000 Demand Safer Staffing and Benefits

Thousands of New York City nurses walked off the job on Monday, launching a major nurses strike across 10 private hospitals to demand better staffing levels, stronger healthcare benefits, and protection from workplace...

AbbVie Commits $100 Billion to U.S. Investment in Drug Pricing Deal With Trump Administration

AbbVie has announced a major agreement with the U.S. government that could reshape drug pricing and pharmaceutical investment in the country. The company said it has entered into a three-year deal with President Donald...

Trump Warns of New Tariffs as Iran Protests Escalate and U.S.-Iran Tensions Rise

Tehran said it is keeping communication channels open with Washington as U.S. President Donald Trump weighs how to respond to Irans violent crackdown on nationwide protests, one of the most serious challenges to clerical...

Trump Pushes Tech Giants to Absorb AI Data Center Power Costs, Citing Microsoft Changes

U.S. President Donald Trump said Monday evening that his administration is working closely with major American technology companies to prevent the rising electricity costs of AI data centers from increasing household...

Science

NASA and SpaceX Target Crew-11 Undocking From ISS Amid Medical Concern

NASA has confirmed that the agency, in coordination with SpaceX, is targeting no earlier than 5 p.m. Eastern Time (2200 GMT) on Wednesday, January 14, for the undocking of the SpaceX Crew-11 mission from the International...

Neuralink Plans High-Volume Brain Implant Production and Fully Automated Surgery by 2026

Elon Musks brain-computer interface company Neuralink is preparing for a major expansion, announcing plans to begin high-volume production of its brain implant devices and transition to a fully automated surgical procedure...

Jared Isaacman Confirmed as NASA Administrator, Becomes 15th Leader of U.S. Space Agency

The U.S. Senate has officially confirmed billionaire private astronaut Jared Isaacman as the new NASA administrator, making him the 15th leader in the agencys history. The confirmation, which took place on Wednesday, marks...

Senate Sets December 8 Vote on Trump’s NASA Nominee Jared Isaacman

The U.S. Senate Commerce Committee announced it will vote on December 8 on President Donald Trumps renewed nomination of private astronaut and tech entrepreneur Jared Isaacman to lead NASA. Isaacman, known for his...

NASA Cuts Boeing Starliner Missions as SpaceX Pulls Ahead

NASA has significantly scaled back Boeings Starliner program after years of technical issues and delays, announcing that the next Starliner mission to the International Space Station (ISS) will fly without astronauts. The...

Technology

Nvidia Denies Upfront Payment Requirement for H200 AI Chips Amid China Export Scrutiny

Nvidia has denied claims that it requires full upfront payments for its H200 artificial intelligence chips, pushing back against reports suggesting unusually strict sales terms for Chinese customers. In a statement issued...

SK Hynix to Invest $13 Billion in Advanced Chip Packaging Plant as AI Memory Demand Surges

SK Hynix Inc, a key supplier to Nvidia and one of the worlds largest memory chipmakers, announced plans to invest 19 trillion won (approximately $13 billion) to build a cutting-edge chip packaging plant in South Korea,...

Starlink Internet Remains Active in Iran Despite Nationwide Blackout

Some Iranians continue to access the internet through Elon Musks Starlink satellite service despite a sweeping nationwide communications blackout, highlighting how satellite internet is increasingly used to bypass...

BESI Reports Strong Q4-25 Orders Surge Driven by Data Center and Hybrid Bonding Demand

BE Semiconductor Industries N.V. (Euronext: BESI), a leading Dutch semiconductor assembly equipment manufacturer, reported robust preliminary orders for the fourth quarter of 2025, underscoring strengthening demand across...

Trump Considers Starlink to Restore Internet Access in Iran Amid Protests

U.S. President Donald Trump said on Sunday that he is considering discussions with billionaire entrepreneur Elon Musk about restoring internet access in Iran, where authorities have imposed widespread blackouts amid...