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
Hot water from PV
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="ProDave" data-source="post: 525595" data-attributes="member: 6969"><p>The maximum without prior authorisation is with an inverter limited to 3.68kW output, you can have more panels than that subject to the inverter limit.</p><p></p><p>To put another perspective on whether it's best to heat DHW with an immersion heater or export it.</p><p></p><p>We have no gas here so all electric with an air source heat pump. Electricty is now 27p per kWh so assuming a best case COP of 3, it costs me 9p per kWh to heat my hot water if I import electricity to do so.</p><p></p><p>So on that basis, using surplus PV to heat DHW via the immersion heater saves me 9p per kWh sent to the immersion heater, which is a LOT better than letting it export and only getting paid 5.5p for it, even if I could.</p></blockquote><p></p>
[QUOTE="ProDave, post: 525595, member: 6969"] The maximum without prior authorisation is with an inverter limited to 3.68kW output, you can have more panels than that subject to the inverter limit. To put another perspective on whether it's best to heat DHW with an immersion heater or export it. We have no gas here so all electric with an air source heat pump. Electricty is now 27p per kWh so assuming a best case COP of 3, it costs me 9p per kWh to heat my hot water if I import electricity to do so. So on that basis, using surplus PV to heat DHW via the immersion heater saves me 9p per kWh sent to the immersion heater, which is a LOT better than letting it export and only getting paid 5.5p for it, even if I could. [/QUOTE]
Insert quotes…
Verification
Post reply
Green Renewable Energy Forum
Solar PV Forum
Hot water from PV
Top