I have a modest set of solar panels on an entirely ordinary house in suburban London. On average they generate about 3,800kWh per year. We also use about 3,800kWh of electricity each year. Obviously, we can't use all the power produced over summer and we need to buy power in winter. So here's my question: How big a battery would we need in order to be completely self-sufficient? Background …
last time I checked I was using around 4600-5800kwh from May to August. the rest of the year its 3300-4200.
I live in a dual zoned 5200sqft home and my average power bill is around $900.
I’ve had solar sales try to talk me into solar panels but once they see my consumption they stop answering my calls lol. could be because I told them I’ll buy once I can get net zero.
could be because I told them I’ll buy once I can get net zero.
I’m not following your logic. You aren’t willing to accept any savings unless you can completely zero out your power bill? Judging from your consumption I’m assuming a good chunk of that is for cooling your home? If so that means you’re likely in a pretty great place to harvest solar power. You’d reach payback of your investment on your array much faster than most, and be saving money for probably 35 years or more with little to no additional investment.
Making some guesses for how much your electricity rates are, and how much you’re consuming (assuming much from cooling), you might be a full payback in less than 7 years if you took advantage of the tax credit. Then, every month after that you’d be gaining money back.
my house is over 120 years old. it still has knob and tube in half the house. I have even found gas lines for the old sconces, that were “conveniently” used as grounds for said knob and tube in some places. the house is a nightmare, electrically speaking. the only new-ish electrical are the HVAC systems, the 200amp panel, and the basement (where the rack lives).
for me to get proper solar installed, it would cost more than the house cost to buy. For me to find it in any way cost effective, I would need my $900 a month power bill to pay for the $200k loan on top of my mortgage.
I have personally never seen a bill of more than 60€ per month. I have some friends living in bigger houses, not apartments, and they tell they can get over 100 fairly frequently, the bigger ones more in the North can get over 200 in the winters, but even still, I’ve never even heard of anything reaching 300.
But I’m in my thirties and don’t really know anyone from beyond upper middle class. That might help explain my experience if it happens to be the outlier, but just reading the responses to this, I might not be the outlier here.
Anything four figures is just crazy surreal to me. I can not even imagine what it takes to reach that kind of electric usage. Or maybe it’s just extremely expensive, not the usage itself being crazy? I would think living in a place where sustaining one’s existence requires that kind of resource usage would be very hostile against settling and building in general?
But if it’s just personal usage rather than the regional climate or whatever, and an insane price of electricity isn’t the main reason, then I don’t even know what to say. That’s crazy.
glad I’m not the only one that noticed that.
last time I checked I was using around 4600-5800kwh from May to August. the rest of the year its 3300-4200.
I live in a dual zoned 5200sqft home and my average power bill is around $900.
I’ve had solar sales try to talk me into solar panels but once they see my consumption they stop answering my calls lol. could be because I told them I’ll buy once I can get net zero.
I’m not following your logic. You aren’t willing to accept any savings unless you can completely zero out your power bill? Judging from your consumption I’m assuming a good chunk of that is for cooling your home? If so that means you’re likely in a pretty great place to harvest solar power. You’d reach payback of your investment on your array much faster than most, and be saving money for probably 35 years or more with little to no additional investment.
Making some guesses for how much your electricity rates are, and how much you’re consuming (assuming much from cooling), you might be a full payback in less than 7 years if you took advantage of the tax credit. Then, every month after that you’d be gaining money back.
my house is over 120 years old. it still has knob and tube in half the house. I have even found gas lines for the old sconces, that were “conveniently” used as grounds for said knob and tube in some places. the house is a nightmare, electrically speaking. the only new-ish electrical are the HVAC systems, the 200amp panel, and the basement (where the rack lives).
for me to get proper solar installed, it would cost more than the house cost to buy. For me to find it in any way cost effective, I would need my $900 a month power bill to pay for the $200k loan on top of my mortgage.
That house sounds like a terrible investment.
Wtf?? Are you running a crypto farm or something?? $900 is insane
that’s an average btw. last months bill was $1100.
this month is already at $960 and we’re only halfway through the month.
this year has been lower than previous. I had new insulation installed last November.
highest bill I have ever seen was around $2200 which is over my monthly mortgage.
no crypto farm. though it would probably be higher if I was.
I have personally never seen a bill of more than 60€ per month. I have some friends living in bigger houses, not apartments, and they tell they can get over 100 fairly frequently, the bigger ones more in the North can get over 200 in the winters, but even still, I’ve never even heard of anything reaching 300.
But I’m in my thirties and don’t really know anyone from beyond upper middle class. That might help explain my experience if it happens to be the outlier, but just reading the responses to this, I might not be the outlier here.
Anything four figures is just crazy surreal to me. I can not even imagine what it takes to reach that kind of electric usage. Or maybe it’s just extremely expensive, not the usage itself being crazy? I would think living in a place where sustaining one’s existence requires that kind of resource usage would be very hostile against settling and building in general?
But if it’s just personal usage rather than the regional climate or whatever, and an insane price of electricity isn’t the main reason, then I don’t even know what to say. That’s crazy.
is that per-month, or for the whole span?
per month.