Fuel Usage Performance data 2017  
 
 

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In mid Jan 2017 system increased from 1.8 to 3.67 kWp and the inverter has also been replaced with a Solaredge system. PVGIS website shows 1583kWh annually. Though this year we only had 50 weeks at new output, the missing 2 weeks was during early January so would not have affected total output greatly.

2017 generated 3403 kWhrs (95%) The table below compares the monthly generation against the PV-GIS predicted output. Red figures are below predicted level and green figures are above.

Generated and imported electricity data for 2017 with monthly summaries and annual comparisons below.

This year started poorly with well below expected in first 3 months and then roughly as predicted each month expect for below generation figures for September and October, total generation ended up at 3,403kWh.
A total of 2,157kWh's were imported this year, approx 1,200kWhs up on last year. This was first full year with an electric car being charged mainly at home and doing over 10,000 miles in it. The extra electricty cost was more than offset by the savings of over 640 on buying fuel for the car previously used.
By April 24th 2017 we had generated as much as imported this year. Overall we ended up at 95% of 3,583kWh target. Also gas usage data graph below, gas usage in 2017 was 2,846kWhs slightly less than 2016 total of 3,018 kWhs.

2017 Stats:

Total recorded generation in 2017 = 3,403 kWh's

Best week = 129 kWhrs ... Best day = 24 kWhrs

 

Electricity comparison generated / imported (graph-weekly data)

Weekly electricity generation comparison (graph)

Monthly PV data graph

Weekly PV generation data table 2017

Cumulative generation 2017

Daily PV data 2017 graph

Weekly gas usage graph 2008-2016 (log burner installed Sept 2008)

Weekly electricity imports graph 2011-2017




2017 Monthly details:-
January -The first month with the extended PV installed on 12th generated 91kWh this month. Previous 10 yr average was 49 kWh so nearly double that even with fairly cloudy month.
February -The first full month with the extended PV installed generated 118kWh this month.but a fairly overcast month. Previous 10 yr average was 72 kWh.
March -The amount generated this month follows the usual pattern of more than doubling the total generation of February with 280 kWhs this month.
April -The amount generated this month was 419 kWhs.
May - A hot and sunny month. The amount generated this month was 460 kWhs, more than double previous average for May.
June - A variable month. The amount generated this month was 455 kWhs, slightly less than May.
July - Another variable month. Hot and sunny at the start but wet and windy towards the end. The amount generated this month was 456 kWhs, same total as June.
August - Another variable month. The amount generated this month was 403 kWhs - 12kWhs more than predicted by PV-GIS.
September - An overcast month resulting in the amount generated being 296 kWhs, 38kWhs less than predicted by PV-GIS.
October - Another overcast month resulting in the amount generated being 195 kWhs, 30kWhs less than predicted by PV-GIS.
November - A sunnier month, the amount generated being 146 kWhs, 9kWhs better than predicted by PV-GIS.
December - A fairly overcast month, the amount generated being 84 kWhs, 12kWhs less than predicted by PV-GIS.

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