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<blockquote data-quote="w0z" data-source="post: 527293" data-attributes="member: 30071"><p>Taking the original question down to bare bones</p><p>The optimum is to use as little import energy as possible, if you regularly have an excess it makes sense to use as much as you can before export. If you can't use it any other way then long term fitting a cylinder depending on cost, would ensure you always use the excess.</p><p>If you can use it to charge an EV or for heat top up the equation changes (fitting an electric heater is a lot cheaper than a cylinder but then that would only cover you for the colder months)</p><p>The extra benefit if they get the plumbing right is instant hot water rather than the usual combi delay (awful in my place because it's a long way from the taps)</p></blockquote><p></p>
[QUOTE="w0z, post: 527293, member: 30071"] Taking the original question down to bare bones The optimum is to use as little import energy as possible, if you regularly have an excess it makes sense to use as much as you can before export. If you can't use it any other way then long term fitting a cylinder depending on cost, would ensure you always use the excess. If you can use it to charge an EV or for heat top up the equation changes (fitting an electric heater is a lot cheaper than a cylinder but then that would only cover you for the colder months) The extra benefit if they get the plumbing right is instant hot water rather than the usual combi delay (awful in my place because it's a long way from the taps) [/QUOTE]
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