Live data

Each value says how often it is read and when it was last measured. The inverters, meters and battery are read every 5 minutes, the pyranometer every 10. The lab sends them to this site every 15 minutes, and after 30 minutes a value is marked as delayed.

Arrays 1 and 20 W
Vertical array0 W
Hydropower backup0 Wone way only
Battery84 W21 %, Giving power
Technical roomSunny Island and inverters
Lab appliances69 W
Car chargers6 W

LiveSolar now 0 W

Photo of the lab with its power flows drawn over it. The light moves the way the power goes, faster when more power flows. The backup comes from the campus grid, almost all hydropower in Norway, and the lab can only take from it. The battery and the inverters are inside the house. Measured 10 min ago

Solar power, total The three arrays together, 4 770 Wp in total. A Sunny Boy shuts down when there is not enough light, and a sum with a missing term is not a smaller total, it is a wrong one. So this series has a hole whenever any inverter was asleep, which in Bergen means most of the winter afternoon.: 0W; Read every 5 min, last 25 min ago
Global irradiance Sunlight energy arriving on a horizontal surface.: 0W/m²; Read every 10 min, last 12 min ago
Battery state of charge How full the 14.4 kWh Tesvolt battery is.: 21%; Read every 5 min, last 10 min ago
Consumption The lab appliances and the charging stations together. The yellow sockets, which are wired directly to the HVL grid, are not part of it.: 74W; Read every 5 min, last 10 min ago

Energy balance

What the lab uses, what the panels make, what the battery takes or gives, and what arrives through the backup feed from the grid. The consumption is measured by two meters, one on the lab appliances and one on the charging stations; the yellow sockets, wired straight to the HVL grid, pass through neither and are not counted. A negative battery value means the battery is being charged. The four numbers are read a few seconds apart, so a small difference is normal.

74WConsumption0WSolar production84WBattery0WBackup from the grid

Measured 10 min ago

Today

Solar production (AC power of the three inverters together, W)
Sunlight (global irradiance on a horizontal surface, pyranometer, W/m²)
Battery (state of charge, %)

Solar production today: highest 2.03 kW at 13:15, and up to 234 W/m² of sunlight. The shaded stretches are night, from sunset to sunrise in Bergen. The same numbers are in the table view.

The battery ran between 21 % and 28 % today, and is at 21 % now.

Solar production, sunlight and battery today, every 30 minutes
Time (Bergen)	Solar production (W)	Sunlight (W/m²)	Battery (%)
04/11, 07:00	not read	not read	21
04/11, 07:30	not read	0	21
04/11, 08:00	not read	0	22
04/11, 08:30	not read	2	23
04/11, 09:00	0	11	25
04/11, 09:30	86	43	22
04/11, 10:00	159	52	21
04/11, 10:30	437	108	24
04/11, 11:00	398	101	24
04/11, 11:30	419	92	23
04/11, 12:00	464	93	23
04/11, 12:30	1 159	149	23
04/11, 13:00	659	67	24
04/11, 13:30	2 030	204	26
04/11, 14:00	651	194	27
04/11, 14:30	758	143	27
04/11, 15:00	56	32	27
04/11, 15:30	23	20	25
04/11, 16:00	15	14	23
04/11, 16:30	0	6	22

Solar production

Read from each of the three inverters since 16 September 2026. An inverter switches off in low light, so early and late in the day an array can show no value.

Solar power, array 1 (monocrystalline) 6 monocrystalline panels Astronergy ASM6610M, 280 Wp each, 1 680 Wp, confirmed from the label on the back of a panel. Wired as one string of six in series since 28 March 2026. WHICH of the two tilted arrays this inverter is connected to is not confirmed: it comes from the lab wall chart, and two of the three inverters may have been exchanged about a year ago. The two tilted arrays cannot be told apart from their measurements, because six monocrystalline panels and six polycrystalline ones in series differ by three tenths of a volt.: 0W; Read every 5 min, last 25 min ago
Solar power, array 2 (polycrystalline) 6 polycrystalline panels REC275PE, 275 Wp each, 1 650 Wp. Wired as one string of six in series since 28 March 2026. WHICH of the two tilted arrays this inverter is connected to is not confirmed, for the same reason as array 1: the assignment comes from the wall chart, and two inverters may have been exchanged since it was drawn.: 0W; Read every 5 min, last 30 min ago
Solar power, array 3 (vertical, east and west) Six frames standing vertically on the old railway rails, each carrying two MiaSole FLEX-02 120N thin film modules back to back, one facing east and one facing west. Twelve modules of 120 Wp, 1 440 Wp in total. The two faces are two strings of six wired in parallel, so the inverter reports them added together and can never tell east from west. These modules are not bifacial: a CIGS module is opaque and produces nothing through its back. It is the mounting that has two faces.: 0W; Read every 5 min, last 50 min ago

No new reading since 50 min ago. The logger may be offline. System status.

Battery

Battery state of charge How full the 14.4 kWh Tesvolt battery is.: 21%; Read every 5 min, last 10 min ago
Battery power Positive when the battery is supplying the lab, negative when it is being charged. Confirmed on 16 September 2026 by watching the state of charge rise from 28 % to 30 % while this value stayed negative.: 84W; Read every 5 min, last 10 min ago

What the lab uses

The lab appliances and the two charging stations, each on its own meter, and their sum.

Consumption The lab appliances and the charging stations together. The yellow sockets, which are wired directly to the HVL grid, are not part of it.: 74W; Read every 5 min, last 10 min ago
Lab appliances Everything the lab itself runs: the Raspberry Pi, the screen, the network switch, the router, the backup power supply. Measured by the meter marked "Lab local grid".: 69W; Read every 5 min, last 10 min ago
Charging stations The two car charging stations CC1 and CC2, measured at their own meter. It reads a few watts of standby when no car is plugged in.: 6W; Read every 5 min, last 10 min ago

Backup from the grid

Starts when the battery falls below 20 % and stops at 25 %. From October to March the lab needs it regularly.

Backup from the grid The lab is not connected to the grid for its normal supply, but a backup feed from the HVL grid can start when the battery falls below 20 %, and stops again at 25 %. This is what passes through it.: 0W; Read every 5 min, last 10 min ago

Weather

Global irradiance Sunlight energy arriving on a horizontal surface.: 0W/m²; Read every 10 min, last 12 min ago
Outdoor temperature Air temperature outside the lab, in the shade of the building. Measured on site, not taken from a forecast.: 8.4°C; Read every 5 min, last 10 min ago
Temperature under the monocrystalline panels Air temperature under the upper, monocrystalline row. In sunshine it runs well above the outdoor air, and a hotter cell produces less: this is the series to put against pv_power_array1.: 6.1°C; Read every 5 min, last 10 min ago
Outdoor humidity Relative humidity outside the lab.: 81%; Read every 5 min, last 10 min ago

Inside the lab

Indoor temperature Air temperature inside the lab. The sensor is close to a wall and to the ventilation outlet, so it reads the corner it sits in rather than the room; moving it is on the job list of autumn 2026.: 20.0°C; Read every 5 min, last 10 min ago
Indoor humidity Relative humidity inside the lab.: 38%; Read every 5 min, last 10 min ago

Controlled loads

The lab switches these three loads itself, once a minute, from the battery level: the fuller the battery, the more it allows itself to run, and below 23 % it protects the battery and drops them. This page only shows their state. Nothing here can switch anything on or off.

Energy level Control level EL0 to EL3, decided from the battery state of charge.: No data; Read every 5 min
Car charger CC1 Switched automatically by the battery state of charge.: Off; Read every 5 min, last 10 min ago
Second car socket CC2 Switched automatically by the battery state of charge.: Off; Read every 5 min, last 10 min ago
Heater, 2 kW Switched automatically by the battery state of charge.: Off; Read every 5 min, last 10 min ago

Controlled loads, total The three switched loads added together, as each Shelly reports them. It reads 0 W whenever the lab has turned them all off, which is normal below 65 % of battery.: 0W; Read every 5 min, last 10 min ago
Power drawn by CC1 What the car charger actually draws, not only whether it is allowed to run.: 0W; Read every 5 min, last 10 min ago
Power drawn by CC2 What the second car socket actually draws, not only whether it is allowed to run.: 0W; Read every 5 min, last 10 min ago
Power drawn by the heater, 2 kW What the heater actually draws, not only whether it is allowed to run.: 0W; Read every 5 min, last 10 min ago

Explore the whole record

Any day, week, month or year, as a graph or a table, and downloadable as a CSV with its metadata.