17°C
Porth, Newquay, Cornwall. UK
Updated04/09/2025 19:15 
 




Tesla Powerwall



Graph Key Data collected every minute
Time - Lastest data, collected every minute Solar - Generation, Watts
Grid - Import (+ve) / Export (-ve), Watts Powerwall - Charge (-ve), Discharge (+ve), Watts
Home - Usage, Watts Battery - Percentage charge
Tesla Powerwall Latest Data
Time
Solar (W)
Home (W)
Grid (W)
Powerwall (W)
Battery (%)
19:23:02
150
1187
11
1020
85.38
Tesla Powerwall Today's Meter Totals
Todays Date
Solar Gen (kWh)
Home Usage (kWh)
Grid Import (kWh)
Grid Export (kWh)
Battery Discharge (kWh)
Battery Charge (kWh)
04-09-2025
19.321
22.161
15.228
6.994
5.47
10.854
Days With No Grid Usage - Data from smart meter
Date
Date
Date
Date
18-06-2024
28-06-2024
29-07-2024
13-09-2024
-
-
-
-




Tesla Data - Grid Usage By Month

Month
E7 Rate (pence per kwh)
kwh Used
Cost £
Total For Month
September 2025
Night 6.7p
41.9
2.81
£ 2.94
Up to 03 September 2025
Day   25.872p
0.5
0.13
August 2025
Night 6.7p
329.1
22.05
£ 24.92
Day   25.872p
11.1
2.87
July 2025
Night 6.7p
304.4
20.39
£ 23.21
Day   25.872p
10.9
2.82
June 2025
Night 6.7p
214.3
14.36
£ 15.50
Day   25.872p
4.4
1.14
May 2025
Night 6.7p
182.8
12.25
£ 16.03
Day   25.872p
14.6
3.78
April 2025
Night 6.7p
260.2
17.43
£ 34.40
Day   25.872p
65.5
16.97
March 2025 # E-on
Night 6.7p
242.8
16.27
£ 20.25
From 06 March 2025
Day   25.872p
15.4
3.98
March £ 23.53
March 2025
Night 13.28p
23.8
3.16
£ 3.28
Up to 05 March 2025
Day   30.87p
0.4
0.12
February 2025 # E-on
Night 13.28p
103.5
13.74
£ 14.94
From 20 February 2025
Day   30.87p
3.9
1.20
February £ 47.48
February 2025
Night 10.90p
272.8
29.74
£ 32.54
Up to 19 February 2025
Day   27.98p
10.0
2.80
- £3.36 EDF Free
January 2025
Night 10.90p
457.2
49.83
£ 64.91
Day   27.98p
53.9
15.08
- £5.49 EDF Free
December 2024
Night 10.90p
473.7
51.63
£ 76.64
Day   27.98p
89.4
25.01
November 2024
Night 10.90p
457.4
49.86
£ 59.07
Day   27.98p
32.9
9.21
October 2024
Night 10.90p
361.9
39.45
£ 42.56
Day   27.98p
11.1
3.11
September 2024
Night 10.90p
271.0
29.54
£ 30.49
Day   27.98p
3.4
0.95
August 2024
Night 10.90p
176.8
19.27
£ 20.00
Day   27.98p
2.5
0.73
July 2024
Night 10.90p
139.4
15.19
£ 15.97
Day   27.98p
2.8
0.78
June 2024
Night 10.90p
65.5
7.14
£ 7.81
Day   27.98p
2.4
0.67
May 2024
Night 10.90p
138.9
15.14
£ 15.87
Day   27.98p
2.6
0.73
April 2024
Night 10.90p
347.8
37.91
£ 41.58
Day   27.98p
13.1
3.67
March 2024 #
Night 10.90p
180.4
19.66
£ 22.18
(From 18 March 2024)
Day   27.98p
9.0
2.52
March 2024
Night 14.65p
266.9
39.10
£ 43.50
(Up to 17 March 2024)
Day   36.64p
12.0
4.40
March £ 65.68
February 2024
Night 14.65
495.7
72.62
£ 96.40
Day   36.64p
64.9
23.78
January 2024 #
Night 14.65p
508.9
74.55
£ 118.99
Day   36.64p
121.3
44.44
December 2023
Night 11.38p
540.3
61.49
£ 107.30
Day   36.71p
124.8
45.81
November 2023
Night 11.38p
502.5
57.18
£ 83.76
Day   36.71p
72.4
26.58
October 2023 #
Night 11.38p
478.8
54.48
£ 67.66
Day   36.71p
35.9
13.18
September 2023
Night 13.92p
328.2
45.68
£ 57.44
Day   39.09p
30.1
11.76
August 2023
Night 13.92p
335.1
46.64
£ 52.77
Day   39.09p
15.7
6.13
July 2023 #
Night 13.92p
299.4
41.67
£ 47.18
Day   39.09p
14.1
5.51
June 2023
Night 13.93p
201.9
28.12
£ 32.79
Day   44.91p
10.4
4.67
May 2023
Night 13.93p
162.1
22.58
£ 26.48
Day   44.91p
8.7
3.90
April 2023 #
Night 13.93p
402.3
56.04
£ 71.89
Day   44.91p
35.3
15.85
March 2023
Night 11.22p
583.7
81.31
£ 123.85
Day   49.38p
118.2
65.49
February 2023
Night 11.22p
547.6
61.44
£ 120.30
Day   49.38p
119.2
58.86
January 2023
Night 11.22p
420.8
47.21
£ 265.76
(Tesla installed 17th)
Day   49.38p
442.6
218.55

Tesla In Storm Watch Mode

Date
Info
EDF Free Savings
23/24-01-2025
Storm Eowyn
-
05-01-2025
Put into storm watch mode as EDF Free Electric 08:00 - 20:00
£ 3.38
29-12-2024
Put into storm watch mode as EDF Free Electric 08:00 - 20:00
£ 3.61
25-12-2024
Put into storm watch mode as EDF Free Electric 08:00 - 16:00
£ 1.90
6/7-12-2024
Storm Darragh
-
23-11-2024
Storm Bert
-
19/21-01-2024
Storm Isha
-
1/2-11/2023
Storm Ciaran
-

Notes : - Grid usage by month table

Powerwall consists of:- Tesla Powerwall AC 13.5kWh, Tesla Gateway 2 with backup power and Tesla 3 Phase Kit
Readings are updated manually following day from smart meter and exclude standing charge
E7 Night Rate times are GMT 00:00 to 07:00 and BST 01:00 to 08:00
E7 Day Rate times are GMT 07:00 to 00:00 and BST 08:00 to 01:00 following day
# - New E7 Tariff Rates
Tesla Powerwall installation completed 17th January 2023, effective from 18th

Tesla Powerwall 2 Past Graphs - Here


Had 5 power cuts since installation


Delay of approx 5 seconds before Tesla batteries provided back up power
18-05-2023 14:51 to 14:02, lasting justover 10 minutes, Cable feed to pole moved to underground feed
06-05-2023 20:30 to 23:55, lasting around 3 hours 25 mins
30-04-2023 Three powercuts between 22:15 - 22:50, each lasting less than 2 minutes
Page last updated
25th December 2024 - Added storm watch panel and notes panel
To do - Add view past history and set up 1 minute update to data.