Clean Energy vs. Traditional Energy

Over the past decade, there has been a rapid rise in clean energy, energy storage, and electrification globally. Solar power, for example, is now the world’s fastest growing source of electricity. According to energy research firm Ember, in 2014 solar contributed just 15% of electricity generation capacity additions globally (behind natural gas, coal, and wind). A decade later in 2024, solar was the largest new energy source, accounting for 69% of global electricity capacity additions. That growth has continued in the first six months of 2025 with more than 380 GW of new solar installed globally, up 64% over the 232 GW installed in the same period in 2024, according to Ember. And global investments in clean energy overall, including renewables, power grids, and EVs, hit a record $2.3 trillion last year according to Bloomberg New Energy Finance, more than double the investments made in 2020. Although the valuations of U.S.-listed clean energy came under pressure between 2021 and 2024 due to high interest rates, supply chain disruptions, and other headwinds, share prices began to rebound last year. Over the past decade, U.S.-listed pure-play clean energy has outperformed fossil fuels, including one year (2020) as one of the top-performing indexes covering any industry, gaining 184.43%. The Nasdaq Clean Edge Green Energy Total Return™ Index (CEXX™) grew 201.34% over the past ten years (through December 31, 2025), compared to 124.53% growth for IXETR (the Energy Select Sector Total Return Index of S&P 500 companies involved in the development or production of energy, namely oil and gas) over the same period.

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