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Green Renewable Energy Forum
Solar PV Forum
How to calculate the generation in kWh of the PV Panels
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<blockquote data-quote="bladerunnerpv" data-source="post: 536920" data-attributes="member: 35385"><p>[USER=35854]@+Sid[/USER] Probably a bit late to add this, but in case it helps...</p><p></p><p>If you plug your PV system design numbers into something like easy-pv you can get an indication of kWh for Import, Export, Self-consumption etc, over the year and daily too, also will show battery usage to fill the skirts of the PV generation. Will give you a feel for pros and cons if you play with different options.</p><p></p><p>Assuming the bulk of your appliance use is outside economy 7 for simplicity. Your biggest saving imho will be to maximise self-consumption. Look at the price per kWh from your electricity supplier and deduct price x self-consumption, that's your saving p.a. Adjust for always on like fridge, freezer which you can calculate separately. If your main appliance use is during E7 then payback will be longer. BUT you've always got the standing charge to pay. </p><p></p><p>Link: <a href="https://midsummerwholesale.co.uk/easy-pv" target="_blank">https://midsummerwholesale.co.uk/easy-pv</a></p><p></p><p>Oddly the generators have increased their standing charge prices way above even the high inflation. If it was just the consumption prices I could understand that to an extent in the current climate.</p><p></p><p>Calculating for time of use tariff is another matter! I don't have a PV system yet so system owner's info will assist that one.</p></blockquote><p></p>
[QUOTE="bladerunnerpv, post: 536920, member: 35385"] [USER=35854]@+Sid[/USER] Probably a bit late to add this, but in case it helps... If you plug your PV system design numbers into something like easy-pv you can get an indication of kWh for Import, Export, Self-consumption etc, over the year and daily too, also will show battery usage to fill the skirts of the PV generation. Will give you a feel for pros and cons if you play with different options. Assuming the bulk of your appliance use is outside economy 7 for simplicity. Your biggest saving imho will be to maximise self-consumption. Look at the price per kWh from your electricity supplier and deduct price x self-consumption, that's your saving p.a. Adjust for always on like fridge, freezer which you can calculate separately. If your main appliance use is during E7 then payback will be longer. BUT you've always got the standing charge to pay. Link: [URL]https://midsummerwholesale.co.uk/easy-pv[/URL] Oddly the generators have increased their standing charge prices way above even the high inflation. If it was just the consumption prices I could understand that to an extent in the current climate. Calculating for time of use tariff is another matter! I don't have a PV system yet so system owner's info will assist that one. [/QUOTE]
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How to calculate the generation in kWh of the PV Panels
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