Clean energy ETFs are promising buys due to rising renewable demand, supportive policies, and recent positive returns. These ETFs offer diversification, lower risk, and strong growth potential in the expanding clean energy sector. Therefore, it could be wise to consider buying strong clean energy ETFs: iShares Global Clean Energy (ICLN), Virtus Duff & Phelps Clean Energy (VCLN), and Global X Renewable Energy Producers (RNRG). Read on...