Renewable energy sources are experiencing impressive growth due to the economy’s decarbonization targets. In order to reach the goals set by the EU, it is very important to foster the application of different solutions to maximize green energy production. Micro hydro potential from water networks stands out as an untapped source of green energy, mostly wasted during the operation of water networks. But how competitive is micro hydropower when compared to other RES? A simple comparison of the levelized cost of energy (LCOE) between a 100kW PV array and different sizes of micro hydropower is presented below:
- The annual energy yield of a 33 kW Easy Hydro turbine operating for 4,500 hours per year would be similar to the annual energy yield of a 100 kW PV array. The operational time of the water turbine could be even greater in most circumstances, surpassing the annual energy yield of the 100 kW PV array with just a third of its nominal capacity.
- The LCOE obtained for these two systems was: 0.042 €/kWh for the water turbine and 0.05 €/kWh for PV.
- When comparing the same nominal power output (100 kW – 4,500 hours of operation) this difference increases, decreasing the LCOE of the 100 kW hydro turbine down to 0.033 €/kWh.
This shows how micro hydropower, despite presenting a slightly greater capital expenditure, presents a greater value from the investment point of view with a more competitive LCOE.
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