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
To add more batteries to solar or not?
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="bladerunnerpv" data-source="post: 543571" data-attributes="member: 35385"><p>Sounds like a good situation to be in <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> </p><p>The questions I would be asking myself in your situation would include:-</p><p>i) How many kWh are being used for the 5h from 02.00, how much does the grid supply cost for those hours and, assuming a battery could supply it, what would the payback period for a new battery be?</p><p>ii) can the existing inverter actually charge some additional battery capacity? Is there enough inverter charge rate and solar PV energy available? How much spare are you exporting to the grid - assuming you're connected?</p><p>iii) Could the inverters be linked by a comms cable in any way such that they can manage supply to a single new battery from both of them?</p><p>iv) What is the overall consumption in kWh per annum is which is not supplied by the GSHP? </p><p></p><p>You could benefit from modelling half of your set-up (5kW PV and one inverter) in PVGIS or easy-pv, using the answer to iv) as the demand value, </p><p>first with 6.5kWh and then with 13kWh of battery and see how it behaves and whether there's enough additional self-consumption to justify the payback the cost of more battery.</p></blockquote><p></p>
[QUOTE="bladerunnerpv, post: 543571, member: 35385"] Sounds like a good situation to be in :) The questions I would be asking myself in your situation would include:- i) How many kWh are being used for the 5h from 02.00, how much does the grid supply cost for those hours and, assuming a battery could supply it, what would the payback period for a new battery be? ii) can the existing inverter actually charge some additional battery capacity? Is there enough inverter charge rate and solar PV energy available? How much spare are you exporting to the grid - assuming you're connected? iii) Could the inverters be linked by a comms cable in any way such that they can manage supply to a single new battery from both of them? iv) What is the overall consumption in kWh per annum is which is not supplied by the GSHP? You could benefit from modelling half of your set-up (5kW PV and one inverter) in PVGIS or easy-pv, using the answer to iv) as the demand value, first with 6.5kWh and then with 13kWh of battery and see how it behaves and whether there's enough additional self-consumption to justify the payback the cost of more battery. [/QUOTE]
Insert quotes…
Verification
Post reply
Green Renewable Energy Forum
Solar PV Forum
To add more batteries to solar or not?
Top