DIY solar array 12.5 kw - Page 62

stevehull · 05-04-17, 10:12 PM

Guys, not to nitpick, but the use of incorrect nomenclature is driving me, as an engineer, nuts!

Watts is a capitol W; named after James Watt

kilo (thousand) is a lower case k, mega (million) is an upper case M (don't know why)

hour is expressed as hr or just h

kW, MW, etc. These are units of power

kWhr, MWhr are units of energy (or kW-hr, MW-hr or kW-h, MW-h) as power over a time period

Let's not let James Watt roll over in his grave as James watt!

I know, I know - picky, picky. But the detail is important!

Steve

ps these posts otherwise are great

pinballlooking · 05-04-17, 10:19 PM

Come on and post the power you made last month.

stevehull · 05-05-17, 08:17 AM

I made 1780 kWhrs last billing month, and banked 102 kWhrs.

Steve

pinballlooking · 05-05-17, 08:23 AM

Thanks for posting your numbers but.
Say what size array you have and what month it was for.
That is only way it is useful info.

stevehull · 05-05-17, 02:53 PM

Billing period of March 24 - April 23 (30 days), 1780 kWhrs. 12.7 kW STC (48, 265 W panels).

For the month of April (30 days), 1710 kWhrs.

Thanks for the reminder Pinball,

Steve

pinballlooking · 05-17-17, 01:08 PM

I love this time of year the other day 85,267 kWh made in one day.
1.04 MWh so far this month.

pinballlooking · 06-01-17, 08:29 AM

12.5 kW array we generated 1,820 kWh May 2017 This is the lowest May we have had.

May 2017= 1,820 kWh
May 2016= 1,922 kWh
May 2015= 2,144 kWh
May 2014= 2,076 kWh

Highest one day May 2017 = 85.3kWhs
We banked 745 kWh for the winter.

I exported 24 months billing from my electric company. We have to pay the meter fee but they have to pay us wholesale for extra banked power once a year.

We have paid them $108.50 for the last two years. This covers is all heating cooling my house and driving our about 35K EV miles in this 24 months.

Other solar producers show us your numbers for May when you have them.

where2 · 06-03-17, 01:48 PM

My 4.4kW array
May 2017 = 649kWh
May 2016 = 588kWh
May 2015 = 632kWh
May 2014 = 632kWh

pinballlooking · 06-04-17, 07:30 AM

Quote:

Originally Posted by where2

My 4.4kW array
May 2017 = 649kWh
May 2016 = 588kWh
May 2015 = 632kWh
May 2014 = 632kWh

Good numbers you had your best May. We have had a fair amount of rain in May but we really need it out lakes are low.

DEnd · 06-04-17, 01:03 PM

Quote:

Originally Posted by stevehull

kilo (thousand) is a lower case k, mega (million) is an upper case M (don't know why)

Mega is upper case to differentiate it from milli (thousandth or .001). Anything Mega and up is capitalized as Peta (P), Zetta (Z), and Yotta (Y), also share lower case abbreviations with Pico (p), Zepto (z) and Yocto (y).

05-04-17, 10:12 PM	#611
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 827 Thanks: 241 Thanked 165 Times in 123 Posts	Guys, not to nitpick, but the use of incorrect nomenclature is driving me, as an engineer, nuts! Watts is a capitol W; named after James Watt kilo (thousand) is a lower case k, mega (million) is an upper case M (don't know why) hour is expressed as hr or just h kW, MW, etc. These are units of power kWhr, MWhr are units of energy (or kW-hr, MW-hr or kW-h, MW-h) as power over a time period Let's not let James Watt roll over in his grave as James watt! I know, I know - picky, picky. But the detail is important! Steve ps these posts otherwise are great __________________ consulting on geothermal heating/cooling & rational energy use since 1990 Last edited by stevehull; 05-04-17 at 10:20 PM.. Reason: clarity

05-04-17, 10:19 PM	#612
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 563 Times in 462 Posts	Come on and post the power you made last month. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

05-05-17, 08:17 AM	#613
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 827 Thanks: 241 Thanked 165 Times in 123 Posts	I made 1780 kWhrs last billing month, and banked 102 kWhrs. Steve __________________ consulting on geothermal heating/cooling & rational energy use since 1990

05-05-17, 08:23 AM	#614
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 563 Times in 462 Posts	Thanks for posting your numbers but. Say what size array you have and what month it was for. That is only way it is useful info. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 05-05-17 at 03:01 PM..

05-05-17, 02:53 PM	#615
stevehull Steve Hull Join Date: Dec 2012 Location: hilly, tree covered Arcadia, OK USA Posts: 827 Thanks: 241 Thanked 165 Times in 123 Posts	Billing period of March 24 - April 23 (30 days), 1780 kWhrs. 12.7 kW STC (48, 265 W panels). For the month of April (30 days), 1710 kWhrs. Thanks for the reminder Pinball, Steve __________________ consulting on geothermal heating/cooling & rational energy use since 1990

05-17-17, 01:08 PM	#616
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 563 Times in 462 Posts	I love this time of year the other day 85,267 kWh made in one day. 1.04 MWh so far this month. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 05-17-17 at 09:27 PM..

06-01-17, 08:29 AM	#617
pinballlooking Super Moderator Join Date: Jun 2013 Location: SC Posts: 2,923 Thanks: 172 Thanked 563 Times in 462 Posts	12.5 kW array we generated 1,820 kWh May 2017 This is the lowest May we have had. May 2017= 1,820 kWh May 2016= 1,922 kWh May 2015= 2,144 kWh May 2014= 2,076 kWh Highest one day May 2017 = 85.3kWhs We banked 745 kWh for the winter. I exported 24 months billing from my electric company. We have to pay the meter fee but they have to pay us wholesale for extra banked power once a year. We have paid them $108.50 for the last two years. This covers is all heating cooling my house and driving our about 35K EV miles in this 24 months. Other solar producers show us your numbers for May when you have them. __________________ Current project Aquaponics system , Passive Solar Greenhouse build To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Solar Install 12.5 Kwh- To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Mini Split installs - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. EV Chevy Volt - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by pinballlooking; 06-01-17 at 12:33 PM..

06-03-17, 01:48 PM	#618
where2 DIY Geek Join Date: Apr 2013 Location: Sunny Florida Posts: 401 Thanks: 74 Thanked 83 Times in 73 Posts	My 4.4kW array May 2017 = 649kWh May 2016 = 588kWh May 2015 = 632kWh May 2014 = 632kWh

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode