Solomon Islands,Lao PDR, different locations in the USA are now developing technologies like: Gravity hydraulic machines (water wheels and Archimedes screws) Turbines (very low head turbines and hydrokinetic turbines), Advanced designs and Operation strategies for pumps as turbines (PATs) .. to generate power from water(Hydro Review,IHA etc.). Other countries are also looking for technologies to generate power from the low heads using a small amount of land.
This is the blog of the Energy in Style Website which offers StartUp Ideas and Internship Opportunities in Water, Energy and informatics research