The pie charts depict the shares of various power generation technologies in the total electricity generation of a country for the years 2007 and 2023. The renewable sources of electricity generation consist of Hydro, Solar and Wind. Assuming that the total electricity generated remains the same from 2007 to 2023, what is the percentage increase in the share of the renewable sources of electricity generation over this period?

From the given pie charts, we calculate the total share of renewable sources (Hydro, Solar, and Wind) for both years:

1. For the year 2007:

   $$\text{Renewable Share}_{2007} = \text{Hydro} + \text{Solar} + \text{Wind} = 30\% + 5\% + 5\% = 40\%$$

2. For the year 2023:

   $$\text{Renewable Share}_{2023} = \text{Hydro} + \text{Solar} + \text{Wind} = 35\% + 20\% + 10\% = 65\%$$

3. Percentage Increase:

   $$\text{Percentage Increase} = \frac{65 - 40}{40} \times 100 = \frac{25}{40} \times 100 = 62.5\%$$

Hence, the percentage increase is 62.5%, which corresponds to option (D).