Sea level rise caused by climate change will affect tidal energy in estuaries. Factors like tidal range and current will be impacted, leading to uncertainty in how tidal energy resources will change. The shape of estuaries and presence of levees will determine if tidal ranges and currents get stronger or weaker. More research is needed to understand how sea level rise will affect tidal energy resources in different regions. Changes in tidal energy due to sea level rise can affect renewable energy projects for up to 30 years for tidal stream devices and 120 years for tidal barrages. It's important to carefully consider the environmental and economic impacts when planning tidal energy projects in estuaries.