{"id":628,"date":"2024-04-23T17:08:22","date_gmt":"2024-04-23T16:08:22","guid":{"rendered":"https:\/\/blog.hslracing.com\/myhome\/?p=628"},"modified":"2024-05-06T09:50:07","modified_gmt":"2024-05-06T08:50:07","slug":"solar-and-storage-testing-and-commissioning","status":"publish","type":"post","link":"https:\/\/blog.hslracing.com\/myhome\/2024\/04\/solar-and-storage-testing-and-commissioning.html","title":{"rendered":"Solar and Storage \u2013 Testing and Commissioning"},"content":{"rendered":"

Prior to commissioning the system I needed to run through the inspection and testing for the solar sub panel.<\/p>\n

Many of the tests did not apply as the relevant wires are simply not present – the array cables are 2 core live\/neutral (no earth conductor), so R1\/R2 testing cannot be carried out.<\/p>\n

I could still perform insulation resistance tests as well as RCD tests on all the RCBOs, although this required ordering a new cable as my 3 wire IEC cable was showing no connectivity on the neutral wire!<\/p>\n

\"\"<\/a>The commissioning process was pretty straight forward and involved turning a known load appliance on and off several times as well as turning the solar RCBO off\/on to ensure the CT clamps were functioning as expected.<\/p>\n

I set the Site Maximum Import limit to 60A so as\u00a0 not to overload the DNO supply cartridge fuse.<\/p>\n

I also set the Grid profile to “G99-1-9:2022 G100-2-2:2023 UK PEL 7.36kW Export” as directed by UK Power Networks following my G99 application.<\/p>\n

\"\"<\/a><\/p>\n

The checklist complete I was able to start setting up my Home Assistant Energy dashboard.<\/p>\n

It took me a while to sort all of the relevant sensors, some I had to create as the Enphase integration does not show battery charge or discharge, I had to derive this data from the Myenergi CT clamp data.<\/p>\n

Later still I realised I had named them backwards (charge\/discharge for the battery) and had to rename\/update them so they showed up correctly.<\/p>\n

I have already had a day of no peak energy usage, where I was able to run from off-peak electric (26.3kW) almost no peak (1.9kW) solar (23.04kW) and battery (18kW) for a total cost of \u00a33.01 including the \u00a30.42 standing charge for the day, considering that I still used 51.5kWh of electricity that day is pretty good going for mid April.<\/p>\n

\"\"<\/a>On good days I have flipped my peak\/off-peak from 75%\/25% to 20%\/80% or better and on bad days 35%\/65% with an average electricity consumption still around 60kWh a day this should lead to a return on investment in 3-5 years.<\/p>\n

Summer should be better and things will improve even further once I add my East\/West array and then add a fourth battery to bring my storage capacity up to 20kWh.<\/p>\n

This is my energy usage profile for April so far<\/p>\n

\"\"<\/a>I am still working on the sensors in Home Assistant and am not convinced I have them all set correctly yet.<\/p>\n

Batteries only show from 17th April as that is when I created those sensors, (pink is battery charge, light green battery consumption) but I am unsure why it is not showing Solar consumption after this date on the monthly energy usage chart.<\/p>\n","protected":false},"excerpt":{"rendered":"

Prior to commissioning the system I needed to run through the inspection and testing for the solar sub panel. Many of the tests did not apply as the relevant wires are simply not present – the array cables are 2 core live\/neutral (no earth conductor), so R1\/R2 testing cannot be carried out. I could still…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9],"class_list":["post-628","post","type-post","status-publish","format-standard","hentry","category-uncategorised","tag-solar"],"_links":{"self":[{"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/posts\/628","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/comments?post=628"}],"version-history":[{"count":1,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/posts\/628\/revisions"}],"predecessor-version":[{"id":682,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/posts\/628\/revisions\/682"}],"wp:attachment":[{"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/media?parent=628"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/categories?post=628"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.hslracing.com\/myhome\/wp-json\/wp\/v2\/tags?post=628"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}