I have good luck with Chint. Good value. A backup generator on propane is a much better value than any battery solution. I used to have a good rule of thumb on how large the array needs to be. Something like total annual usage in kWh divided by 3 or something like that. I have 10 kW of panel at home.
I found my spreadsheet. In 2013 I use 26939 kWh for the year. 28238 in 2012. So pretty close to 30,000 kWh. In 2015 I added 10 kW and mostly killed my power bill. 2017 I used 1178 kWh (purchased from the utility). I am planning to add at least 5 kW more someday. And then switch to electric on demand water heaters. So 10 kW for 30,000 kWh. Take annual total kWh and divide by 3 and you have a reasonable value for the amount of power you need to install. From: can...@believewireless.net Sent: Thursday, July 16, 2020 12:38 PM To: AnimalFarm Microwave Users Group Subject: [AFMUG] OT: Switching Home to Grid Tied Solar So finally decided to move my home off-grid. However, would prefer to keep it grid tied just in case. My location has almost zero power outages but I plan on getting a Tesla Powerwall for times when the sun doesn't shine. Not looking to sell back to the grid. In the past year, my greatest power usage was 3500 kWh/month. If power was "free," that would probably increase. Other than oil heat for the coldest days, I'm 100% electric already. I'm in Maryland so I know peak sun is limited but have plenty of southly roof space to compensate. (And even a good amount of easterly space for the mornings. What would people recommend for inverters? Any other recommendations I should consider? -------------------------------------------------------------------------------- -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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