HGP- The Story of a name

I’ve had people ask me what the letters HGP Stand for? Is the P and H a sneaky way to include my initials? As funny as that would be, the answer is no. The letters are part of a simple equation.

It’s simply the equation for head pressure. It is this pressure that generates the force behind the flowing water that we utilise to generate power. When we want to pump the water back uphill,

Pressure=H x P x G

• H - Head

• P - Density

• G - Gravity

Head is the height from the top reservour to the bottom one. P is the term for density, often described with the greek letter Rho. G is gravity, 9.81 m/s2 here on earth, where we plan to operate in the forseeable future.

To convert this to power, simply multiple by the flow rate. For us, the rate can be positive or negative, depending on how we operate.