Clean energy sector performance: PBW is an ETF focused on clean energy. If the clean energy sector as a whole is doing well, PBW's price is likely to rise, and vice versa.

Government policies and regulations: Government support for clean energy through subsidies, tax breaks, or mandates can boost PBW's price. Conversely, policies favoring fossil fuels can negatively impact it.

Technological advancements: Breakthroughs in clean energy technologies like solar, wind, or energy storage can make these technologies more competitive and drive up PBW's price.

Economic conditions: Overall economic growth usually increases energy demand, benefiting clean energy if it's a significant part of the energy mix. Recessions can reduce demand and lower PBW's price.

Interest rates: Rising interest rates can make investments in growth-oriented sectors like clean energy less attractive, potentially lowering PBW's price. Lower rates can have the opposite effect.

Inflation: High inflation can increase costs for clean energy companies, potentially impacting their profitability and PBW's price. Deflation can have a positive impact.

Investor sentiment: Positive investor sentiment towards sustainable investing and environmental, social, and governance (ESG) factors can increase demand for PBW, driving up its price.

Competition: Competition within the clean energy sector and from traditional energy sources can impact the profitability of companies in PBW, affecting its price.

Price of fossil fuels: Higher fossil fuel prices can make clean energy alternatives more attractive, increasing demand for PBW. Lower fossil fuel prices can decrease demand.

Supply chain issues: Disruptions to the supply chain for clean energy components, such as solar panels or batteries, can increase costs and negatively impact PBW's price.

Currency exchange rates: Fluctuations in currency exchange rates can affect the value of the holdings of PBW, especially if it invests in international companies.