Source document: https://docs-lawep.s3.us-east-2.amazonaws.com/1698075125122.pdf (Saint Kitts and Nevis)
• Providing drinking water requires A LOT of energy • WSD is one of the largest users of electricity in St. Kitts • Energy is needed to: PUMP water from wells to storage reservoirs DISINFECT / TREAT water • Energy use is affected by : DEPTH of the well HEIGHT of storage reservoirs DISTANCE of consumers from water sources CONDITION of the entire water system • Energy costs represent 30-50% of total production costs of water • Wasted water = wasted energy!
• Improving energy efficiency will help EXISTING infrastructure continue to meet water demands • Using energy wisely ensures an affordable, reliable water supply into the future • Ways to improve energy use by the WSD: Systematic tracking of energy use Optimization of pumping systems Minimize water losses Adequate maintenance of all systems Capital investment in latest energy efficiency technologies including state of the art pumps and water meters Training and education Staff tracking energy use of pumps Data indicates a pump efficiency of 56% if this can be increased to the original rating of 75%, potential annual energy savings of US$26,000 could be realized.
Using software to optimize pumps Installation of automated tank level controls to prevent overflowing of storage reservoirs