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New solar installation - comparing options - advice welcomed
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<blockquote data-quote="bladerunnerpv" data-source="post: 546060" data-attributes="member: 35385"><p>Hi there, some queries on my part</p><p></p><p>-Why the microinverters in first two quotes but not the third? Microinverters are often used to combat shading problems. </p><p>-What shading factor has been indicated for all three quotes?</p><p>-Any reason for no west-facing panels?</p><p>-Roof is 35deg pitch with respect to the horizontal?</p><p>-Arrangement of strings of panels - 2 strings of 6 panels in series?</p><p></p><p>Suggest you ask about the power level provided to the house, especially when coming from battery, as with east only panels it sounds like you will be relying on battery for evening dinner time power? For context a toaster is quite power hungry and commonly 3kW, although 2kW models are around</p><p></p><p>1st quote, IIRC the Giv AC 3.0 supplies 2.5kW to the house from battery. </p><p></p><p>There is an all-in-one system in the offing, providing higher output and also power cut backup with an additional widget. Quite TESLA-esque. Take a look at the givenergy website for more info. </p><p></p><p>2nd quote, IIRC the tesla gateway enables supply in event of power cut, think output of 3.6kW, </p><p></p><p>Tesla are expensive, some are concerned about the battery materials and ethical mining thereof, not sure how much is real and how much is marketing by other companies.</p><p></p><p>3rd quote, a quick read of the inverter indicates the inverter has max discharge power of 3.68kW from huawei battery supply. Worth checking if the 5kW version of the inverter can be limited to 3.6kW for grid output via the inverter settings, you'll appreciate the extra kW provided to the house from a larger inverter. If I read it correctly huawei cannot provide supply in event of power cut. </p><p></p><p>[URL unfurl="true"]https://midsummerwholesale.co.uk/pdfs/huawei-sun2000-2-6ktl-l1-datasheet.pdf[/URL]</p><p></p><p>Note this is from looking at specs and reading forums and blogs. Don't take my word for all of it!</p></blockquote><p></p>
[QUOTE="bladerunnerpv, post: 546060, member: 35385"] Hi there, some queries on my part -Why the microinverters in first two quotes but not the third? Microinverters are often used to combat shading problems. -What shading factor has been indicated for all three quotes? -Any reason for no west-facing panels? -Roof is 35deg pitch with respect to the horizontal? -Arrangement of strings of panels - 2 strings of 6 panels in series? Suggest you ask about the power level provided to the house, especially when coming from battery, as with east only panels it sounds like you will be relying on battery for evening dinner time power? For context a toaster is quite power hungry and commonly 3kW, although 2kW models are around 1st quote, IIRC the Giv AC 3.0 supplies 2.5kW to the house from battery. There is an all-in-one system in the offing, providing higher output and also power cut backup with an additional widget. Quite TESLA-esque. Take a look at the givenergy website for more info. 2nd quote, IIRC the tesla gateway enables supply in event of power cut, think output of 3.6kW, Tesla are expensive, some are concerned about the battery materials and ethical mining thereof, not sure how much is real and how much is marketing by other companies. 3rd quote, a quick read of the inverter indicates the inverter has max discharge power of 3.68kW from huawei battery supply. Worth checking if the 5kW version of the inverter can be limited to 3.6kW for grid output via the inverter settings, you'll appreciate the extra kW provided to the house from a larger inverter. If I read it correctly huawei cannot provide supply in event of power cut. [URL unfurl="true"]https://midsummerwholesale.co.uk/pdfs/huawei-sun2000-2-6ktl-l1-datasheet.pdf[/URL] Note this is from looking at specs and reading forums and blogs. Don't take my word for all of it! [/QUOTE]
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