The Best Utility ETFs to Capitalize on AI's Massive Power Appetite in 2026

The utility sector has undergone a seismic transformation over the past year. What was once considered the sleepy, defensive corner of the stock market — offering steady dividends but limited upside — has become one of the market’s hottest growth stories. The catalyst? Artificial intelligence and the voracious demand for electricity it creates. As data centers proliferate across America to power AI applications, electricity consumption is skyrocketing, and investors are taking notice. With utility stocks delivering impressive year-to-date gains of 16.2% (surpassing the broader S&P 500’s 15.8%), now is an opportune moment to explore the best utility ETFs for your portfolio.

Why the Utility Sector Is Booming: The AI Connection

The story is simple but profound. According to the U.S. Department of Energy’s analysis from late 2024, data centers are projected to consume between 6.7% and 12% of total U.S. electricity by 2028 — a dramatic jump from historical levels. In absolute terms, data center electricity usage could surge by 325 to 580 terawatt-hours annually by 2028, compared to 176 TWh in 2023. This isn’t theoretical; it’s already happening.

Major utility companies are responding aggressively. Duke Energy disclosed that it is constructing new generation capacity specifically to support AI-driven data centers, with plans to bring over 13 gigawatts online through 2030 while simultaneously upgrading hundreds of thousands of miles of transmission lines. Meanwhile, NextEra Energy, America’s largest utility provider, partnered with tech giant Alphabet to bring the Duane Arnold Energy Center back online by 2029, dedicating carbon-free nuclear power exclusively to Google’s AI operations. These corporate actions underscore the urgency and scale of the power demand boom, making the utility sector an increasingly attractive area for growth-oriented investors.

Why Choose a Best Utility ETF Instead of Individual Stocks?

While the utility opportunity is compelling, individual stock picking in this sector carries risks. Constellation Energy and Vistra Corp. both experienced sharp pullbacks after earnings misses and analyst downgrades, demonstrating how quickly sentiment can shift even when underlying fundamentals remain strong. This is where the best utility ETF approach shines. By investing through an ETF, you gain diversified exposure across dozens of utility companies — from grid operators to independent power producers — spreading your risk while capturing the sector’s overall AI-driven momentum.

Additionally, the macro environment supports ETF investing in utilities. Declining interest rate expectations ease borrowing costs for this capital-intensive industry, supporting valuations as companies undertake massive transmission and generation expansion projects.

Four Best Utility ETFs to Buy

Utilities Select Sector SPDR ETF (XLU)

With $22 billion in assets, XLU is one of the largest best utility ETF options available. It offers broad exposure to 31 companies across electric utilities, independent power producers, and water/gas utilities. The fund’s top holdings include NextEra Energy (12.77%), Constellation Energy (8.18%), Southern Company (7.20%), Duke Energy (6.93%), and American Electric Power (4.76%). XLU has gained 19.4% year to date and holds a Zacks ETF Rank of 2 (Buy), signaling strong relative performance. The fund trades with solid liquidity (13.2 million shares in recent sessions) and charges just 8 basis points in annual fees.

iShares U.S. Utilities ETF (IDU)

IDU is a best utility ETF choice for investors seeking exposure to 44 U.S. utility companies with $1.88 billion in net assets. Its portfolio covers electricity, gas, and water utilities with top holdings in NextEra Energy (11.07%), Constellation Energy (7.10%), Southern Company (6.25%), and Duke Energy (6.00%). The fund surged 18.1% year to date and also maintains a Zacks ETF Rank of 2. With trading volume around 0.8 million shares and a 38 basis point fee structure, IDU balances accessibility with reasonable costs.

Fidelity MSCI Utilities Index ETF (FUTY)

FUTY provides among the broadest exposures available from a best utility ETF, tracking 66 utility companies with $2.15 billion in assets. Its composition includes NextEra Energy (10.92%), Constellation Energy (7.79%), Southern Company (6.79%), Duke Energy (6.32%), and American Electric Power (4.23%). FUTY’s performance has been stellar, gaining 20% year to date with a Zacks Rank of 2. The fund features low trading volume (0.3 million shares) but charges minimal fees at just 8 basis points annually.

Vanguard Utilities ETF (VPU)

As the best utility ETF for comprehensive utility exposure, VPU tracks 69 companies with $8 billion in assets under management. The fund encompasses electric, gas, and water utilities as well as independent power producers and distributors. Top holdings mirror the sector’s leaders: NextEra Energy (10.99%), Constellation Energy (7.75%), Southern Company (6.51%), Duke Energy (6.34%), American Electric Power (4.21%), and Vistra Corp. (4.19%). VPU gained 19.9% year to date with a Zacks Rank of 2, trades with low volume, and charges 9 basis points in fees.

Making Your Decision

Choosing the best utility ETF depends on your investment style and preferences. XLU offers the most liquidity and largest asset base, making it ideal for frequent traders. FUTY provides the broadest diversification across 66 companies, suitable for buy-and-hold investors seeking maximum spread. IDU and VPU occupy the middle ground, offering solid exposure with moderate asset bases. All four maintain similar top holdings, ensuring exposure to the core AI-driven utility narrative, yet differ in fund size, expense ratios, and diversification breadth.

The fundamental case remains constant: AI-driven data center construction is reshaping electricity demand in America, utility companies are mobilizing capital to meet this challenge, and declining interest rates support their balance sheets. By investing through one of these best utility ETFs, you capture sector-wide growth potential while avoiding the idiosyncratic risks of individual stock selection. With the utility boom expected to accelerate into 2026 and beyond, now represents a compelling window for investors to position themselves in this transforming sector.