Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Green Renewable Energy Forum
Solar PV Forum
Solis 3kW AC coupled Inverter & Fogstar 5.12kWh Rack Battery ?
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Talk Electrician Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Oldman22" data-source="post: 549875" data-attributes="member: 36003"><p>[URL unfurl="true"]https://garydoessolar.com/utilities/dailymodellingutility/[/URL]</p><p></p><p>I've now spent a bit of time modeling the outcome of adjusting solar array performance to match my previous history of monthly generation divided by the months days to give a daily average for whatever season is selected. Plus seeing the effect of selection of 5,10 or 15kWh of AC coupled storage with conversion losses of 5% and the use of forced charge 2-5am or not.</p><p></p><p>My September average generation 2020-2022 is 269kWh so just about 9kWh/day which is 57% for Autumn season in this model with my 2.9kWp array.</p><p>Remembering that with such a small array I suffer more than most in Autumn/winter.</p><p> </p><p>If my batteries are 75% full at midnight and I force charge at 25A for 3hrs or 50A for 1.5hrs (only full hours can be modeled at selected kW rate) to get 100% batteries by 5am then it suggests with my moderate house usage of 10kWh/day that the batteries should at the next midnight be within 1% of the previous day end figure.</p><p>The model summary suggests my import cost will be 86p, export revenue 54p so creation a loss of 28p/day on average for September, plus 46p/day standing charge which sadly is not in the model, though I expect you can set up a custom usage profile to the value of 46p daily to add it into the calc's.</p><p>So a modeled average of 74p/day costs for me in September is £22.20 for the month. I have been assuming (without the model) that my Autumn costs should be around £1/day and worst weeks in winter £2/day so its looking like the tool may have a use, even if its a "what if" generator of outputs.</p><p>Remembering that the same month without solar or batteries would cost me around £118 puts it into perspective.</p></blockquote><p></p>
[QUOTE="Oldman22, post: 549875, member: 36003"] [URL unfurl="true"]https://garydoessolar.com/utilities/dailymodellingutility/[/URL] I've now spent a bit of time modeling the outcome of adjusting solar array performance to match my previous history of monthly generation divided by the months days to give a daily average for whatever season is selected. Plus seeing the effect of selection of 5,10 or 15kWh of AC coupled storage with conversion losses of 5% and the use of forced charge 2-5am or not. My September average generation 2020-2022 is 269kWh so just about 9kWh/day which is 57% for Autumn season in this model with my 2.9kWp array. Remembering that with such a small array I suffer more than most in Autumn/winter. If my batteries are 75% full at midnight and I force charge at 25A for 3hrs or 50A for 1.5hrs (only full hours can be modeled at selected kW rate) to get 100% batteries by 5am then it suggests with my moderate house usage of 10kWh/day that the batteries should at the next midnight be within 1% of the previous day end figure. The model summary suggests my import cost will be 86p, export revenue 54p so creation a loss of 28p/day on average for September, plus 46p/day standing charge which sadly is not in the model, though I expect you can set up a custom usage profile to the value of 46p daily to add it into the calc's. So a modeled average of 74p/day costs for me in September is £22.20 for the month. I have been assuming (without the model) that my Autumn costs should be around £1/day and worst weeks in winter £2/day so its looking like the tool may have a use, even if its a "what if" generator of outputs. Remembering that the same month without solar or batteries would cost me around £118 puts it into perspective. [/QUOTE]
Insert quotes…
Verification
Post reply
Green Renewable Energy Forum
Solar PV Forum
Solis 3kW AC coupled Inverter & Fogstar 5.12kWh Rack Battery ?
Top