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Justifying adding batteries ????????
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<blockquote data-quote="binky" data-source="post: 549913" data-attributes="member: 490"><p>say off peak is 10p per kwh, then thats £300 for 3000 kwh you import, saving 20p per kwh or around £600. At £3k for the batteries, that's a 5 year payback, but not forgetting energy is still rising at at least 5% per annum, so potential payback is shorter than that. Now if you charge the battery half the year from the panels then that's actually a 10 year payback, but you could avoid losing the hot water savings by charging up off peak to reduce that figure to less than 10 years. Plus you could also potentially sell some leccy back to Octopuss during peak demands, although that would require a smart meter, which I know you are a huge fan of! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite18" alt=":ROFLMAO:" title="ROFL :ROFLMAO:" loading="lazy" data-shortname=":ROFLMAO:" /></p></blockquote><p></p>
[QUOTE="binky, post: 549913, member: 490"] say off peak is 10p per kwh, then thats £300 for 3000 kwh you import, saving 20p per kwh or around £600. At £3k for the batteries, that's a 5 year payback, but not forgetting energy is still rising at at least 5% per annum, so potential payback is shorter than that. Now if you charge the battery half the year from the panels then that's actually a 10 year payback, but you could avoid losing the hot water savings by charging up off peak to reduce that figure to less than 10 years. Plus you could also potentially sell some leccy back to Octopuss during peak demands, although that would require a smart meter, which I know you are a huge fan of! :ROFLMAO: [/QUOTE]
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Justifying adding batteries ????????
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