Hi Achar! trust my email will ...

Hi Achar! trust my email will fund you well. Yes, I have had the opportunity to fund a a few partially PV powered STP in California - a practice which started about a decade ago when the PV cost was around $10/watt. Most of these projects were on net metering basis and partially subsidized though public funding. Now that the cost of PV has come down to ~ $4/watt installed (much lower in developing countries), it is attracting more and more water and wastewater utilities. I am aware of at least two dozen such facilities. A couple of wastewater facilities, in fact, are feeding their surplus generation from PV, anaerobic digesters, small hydro from outfalls, etc. Another way to reduce aeration load is by using solar powered aerators - a very effective way to enhance biological degradation process especially in oxidation / stabilization ponds. I am aware of few applications where surface aerators were replaced with these equipment. Anyway, I hope this will help you. If you need additional information, please feel free to drop me a line sfc95823@yahoo.com. With very best, Shahid