Posted October 10, 20195 yr Good Day, As the subject states would this be achievable with a grid tied setup? The heat pumps are 9kw & 17kw units. We have enough roof area to fit pannels. I understand that at night we will be using the grid to power them but if we can try save during daylight hours that would help. Based in Durban. Any suggestions?
October 10, 20195 yr Yes, every panel single will assist, although you'll probably need around 6-7kWp ( twenty-odd panels) to completely off set both pumps for the majority of the day.
October 10, 20195 yr Hi Nic, Welcome at the forum. I would say yes, and would defiantly use the sun to power them if i can. What are the physical power consumption on them. Should be in the region of 2kwh for the 9kw and ?? for the 17kw. Doing a grid tied system is also fairly inexpensive.
October 10, 20195 yr Author Thanks for the response guys. Im not to sure on what they using at the moment but Elec bill alone is in the region of 8-12 k (summer-winter) @Jaco de Jongh any suggestions on steps forward?
October 10, 20195 yr 1 hour ago, Natal_Nic said: any suggestions on steps forward? Firstly, can you please tel my if the pool is covered when not in use, if not, your heat loss over the surface area of the pool might play a big role in your high electricity bill. Installing the correct blanket/cover will reduce your usage a lot? (If you can reduce the system losses, it might reduce the required system size as well, saving you some money. After that I would consider a grid tie inverter that is capable of being paired with a battery inverter in the future. For now you will will only benefit from PV inveter, but if you want to expand to battery backup in the future , you will be able to expand without any major issues.
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