Is an Oil & Gas ETF or a Solar Stock Fund the Better Buy in 2026?

The article compares two energy ETFs: XLE (State Street Energy Select Sector SPDR ETF) focusing on traditional oil and gas, and TAN (Invesco Solar ETF) focusing on solar energy. XLE offers lower costs (0.08% vs 0.7% expense ratio) and better recent performance (13% and 18.9% over 3 and 5 years), while TAN delivered stronger 10-year returns (11.8% vs 8.9%) but with significantly higher volatility. The author recommends TAN for long-term investors who can tolerate short-term volatility, citing solar's irreversible long-term growth trajectory.