All installations
Total expected power goes ... 3000 W
PV Forecast
Solar forecast that learns from your own panels.
PV Forecast tells you what your solar panels will produce today and tomorrow, per quarter of an hour. It finds your roof by itself and in many regions measures the tilt and direction of every roof plane from public height data, so you only enter the peak power. The forecast combines several weather models and takes your inverter, the panel temperature and snow into account.
Then it learns from your own panels. It reads your inverter or Homey Energy, corrects itself for shade and for each type of weather, and warns you when a string drops out or the panels lose yield. With Flow cards, widgets and charts on the device you start the dishwasher, the car charger or the home battery when the sun is there.
Dispositivos compatibles
Tarjetas Flow
Haz clic en el dispositivo de arriba para mostrar solo las tarjetas Flow relacionadas.
Cuando...
The expected solar power of all installations together. Fires once each time it crosses the level. For example: above 3000 W, start the heat pump boiler.
All installations
Measured power has been ... 1500 W for 10 min
What the panels really make now, not the forecast. For example: start charging the car when the measured power has been above 2000 W for 10 minutes. Over all installations together. The minutes make the card wait until it has held that long: 0 reacts at once, 10 skips a passing cloud.
All installations
Today’s measured production reaches 10 kWh
Fires once a day, when the measured total of today passes this level. For example: start the dishwasher once 10 kWh came in today. Over all installations together.
All installations
What is still to come today drops below 10 kWh
Fires once a day per level. For example: stop the boiler on the sun when less than 2 kWh is still to come today. Over all installations together.
All installations
Today’s best 3 hour window starts
The hours with the most expected solar energy. For example: start the dishwasher when today’s best 2 hour window starts. Over all installations together.
All installations
Daily report of all installations at ...
Once a day at this time: today measured against expected, and tomorrow, over all installations together, also as a ready sentence. For example: send the summary as a push message at 20:00.
Solar installation
The forecast was updated
Fires after every new forecast, every 30 minutes unless changed in the device settings. For example: write tomorrow's total to a variable for a dashboard.
Solar installation
Expected power goes ... 1500 W
Fires once each time the expected solar power crosses the level. For example: above 2000 W switch on the boiler, and with a second Flow below 500 W switch it off.
Solar installation
Today's best 3 hour window starts
Fires once a day, at the start of the hours with the most expected solar energy today. For example: with 2 hours, switch on the plug of the dishwasher you loaded in the morning.
Solar installation
The panels produce clearly less than expected
Fires after two hours in a row with a clear shortfall: one plane far behind the others, or everything below the cautious estimate. Think of a tripped string, a fault in the inverter or snow. For example: send a push message to check the inverter.
Solar installation
Daily report
Fires once a day at the time set in the device settings (21:00 unless changed). The summary token is a ready sentence for a push message. For example: set the time to 20:00 and send the summary as a push message.
Solar installation
The panels may need cleaning
Fires when the yield on sunny days of the last two weeks is 10 % or more below the six weeks before, without a weather reason. For example: send yourself a reminder to clean them.
Solar installation
The panels did worse than normal today
Fires at 22:30 when the panels made clearly less (15 % or more) than they normally make in the sunlight that actually reached your roof today, measured by satellite. Unlike "The panels produce clearly less than expected", bad weather never sets this one off; a tripped string or a fault on a sunny day does. Needs five days with sun to know what is normal. For example: send yourself a message to check the inverter.
Solar installation
One of today's 3 sunniest hours starts
Sunniest means the most expected energy in that hour, with the learned correction, the same forecast the device shows. Fires once, at the start of each such hour. For example: with 3 hours, run the pool pump in the 3 sunniest hours.
Solar installation
Still to come today drops below 5 kWh
Fires once a day, when the expected energy for the rest of today goes from this level or more to less. For example: below 2 kWh, stop charging the car on the sun.
Solar installation
Tomorrow's forecast changed by more than 20 %
Compares tomorrow's total after every forecast refresh with the total of the refresh before. Totals under 0.5 kWh are not compared. 20 % is a good start. For example: send a push message with Before and Now when tomorrow drops sharply.
Solar installation
Expected surplus goes above 1500 W
Surplus is the expected solar power minus the usual house load at this hour. Needs a house consumption source in the app settings, tab Measurement. Runs once each time the level is crossed. For example: above 1500 W, switch on the boiler.
Solar installation
The sun ... on Roof plane for 15 min
Fires when the sun comes in front of this roof plane, or leaves it, also when it goes behind an obstacle of the measured horizon. Clouds do not count here. For example: start the dishwasher when the sun starts shining on the west roof plane. The minutes make the card wait until it has held that long: 0 reacts at once, 15 waits until the sun has really cleared the edge.
Solar installation
The sun ... for 15 min
Uses the trees and buildings around the roof, measured from a height map when the roof was looked up by address. Without a measured horizon it never fires. For example: raise the sunscreen when the sun goes behind the trees of the neighbours. The minutes make the card wait until it has held that long: 0 reacts at once, 15 waits until the sun has really cleared the edge.
Solar installation
Direct sunlight ... a surface facing ... at 90° for 15 min
For a window, wall or terrace: the sun is in front of it, not behind an obstacle, and your panels show it is really sunny (measured power, or the forecast when nothing is measured). 90° is a wall or window, 0° is flat. For example: lower the sunscreen when direct sunlight starts falling on a surface facing south-west at 90°. The minutes make the card wait until the change has held that long: 0 reacts at once, 15 skips a passing cloud.
Solar installation
Measured power has been ... 1500 W for 10 min
What the panels really make now, not the forecast. For example: start charging the car when the measured power has been above 2000 W for 10 minutes. Uses the power the app measures from your inverter, Homey Energy or a Flow; without a measurement it never fires. The minutes make the card wait until it has held that long: 0 reacts at once, 10 skips a passing cloud.
Solar installation
A roof plane makes much less than the others
Compares the measured power of each roof plane with its own forecast. When one plane makes less than half of what the best other plane makes for half an hour, it fires once that day for that plane: a failed string, shade or dirt. It needs a measurement per roof plane. For example: send a push message with the roof plane and the percentage.
Solar installation
Today’s measured production reaches 10 kWh
Fires once a day, when the measured total of today passes this level. For example: start the dishwasher once 10 kWh came in today.
Solar installation
The panels ...
Measured, not the sunrise: starting is the first 10 minutes of the day above 1 % of the peak power (at least 50 W), stopping is the last 20 minutes below it in the evening. Once a day each. For example: turn off the outdoor lights when the panels start producing.
Solar installation
...
Follows the snow depth of the weather models for this hour, from 1 cm. For example: send a reminder to brush the panels when snow on the panels is expected.
Y...
All installations
Tomorrow's ... total production is above 20 kWh
Tomorrow's total of all installations together. The cautious level is reached 9 days out of 10. For example: charge the home battery from the grid tonight only when the cautious total is not above 10 kWh.
All installations
Measured power has been ... 1500 W for at least 10 min
What the panels really make now, not the forecast. For example: when the washing machine is ready, start it only if the measured power has been above 1500 W for 5 minutes. Over all installations together. The minutes ask that it has held that long: 0 looks at this moment only.
All installations
More than 10 kWh was measured today
Looks at the measured total of today. For example: only run the pool pump in the afternoon when more than 8 kWh was measured today. Over all installations together.
All installations
What is still to come today is above 10 kWh
For example: only start the washing machine on the sun when more than 4 kWh is still to come today. Over all installations together.
All installations
Expected power now is above 1500 W
The forecast for this moment, not the measurement. For example: switch on the dehumidifier only when the expected power is above 1000 W. Over all installations together.
All installations
Tomorrow ... is above 10 kWh
Morning and afternoon split at solar noon. For example: charge the battery at night only when tomorrow morning stays below 3 kWh. Over all installations together.
All installations
It is within today’s best 3 hour window
For example: when the washing machine reports it is ready, start it only within the best 2 hour window. Over all installations together.
All installations
An installation makes clearly less than expected
True while one of the installations raises its alarm for clearly less than expected. For example: skip the daily report when an installation is not well.
All installations
... reaches 60 % of a clear day
Compares the forecast with what your roof makes on a clear day of that date, so one Flow works the whole year: 15 kWh is a top day in December and a grey one in June. For example: charge the home battery from the grid at night only when tomorrow does not reach 40 % of a clear day. Over all installations together.
Solar installation
Tomorrow's ... production is above 10 kWh
Compares tomorrow's total with the level. Choose cautious when a wrong guess costs money: that level is reached 9 days out of 10. For example: charge the home battery from the grid tonight only when tomorrow's cautious production is not above 8 kWh.
Solar installation
Still to come today is above 5 kWh
Checks the expected energy from now until sunset. For example: at 13:00 start the washing machine only when more than 5 kWh is still to come.
Solar installation
Expected production between ... and ... today is above 3 kWh
Adds up the expected energy between the two times today. For example: between 11:00 and 15:00 above 6 kWh, then let the car wait for the sun.
Solar installation
It is within today’s best 3 hour window
True during today's best window of this length: the hours with the most expected solar energy. For example: when the washing machine reports it is ready, start it only when it is within the best 2 hour window.
Solar installation
Expected power now is above 1500 W
Checks the expected solar power at this moment, with the learned correction. For example: run the pool pump only while more than 1500 W is expected.
Solar installation
Tomorrow ... is above 5 kWh
Morning runs until solar noon (in Belgium around 13:45 in summer and 12:45 in winter), afternoon from then on. For example: plan the washing for tomorrow morning when the morning is above 4 kWh.
Solar installation
The panels produce clearly less than expected
True while the alarm Producing less than expected is on: two hours in a row with a clear shortfall. For example: add a warning line to your evening push message.
Solar installation
Snow is expected on the panels
True when at least 1 cm of snow is expected on the panels this hour; the forecast is lower then. For example: skip the reminder to charge the car on the sun.
Solar installation
The current hour is one of today's 3 sunniest hours
Sunniest means the most expected energy in that hour, with the learned correction, the same forecast the device shows. For example: with 3 hours, let the heat pump heat the water only in those hours.
Solar installation
Expected surplus is above 1500 W for the next 60 minutes
Checks every quarter hour in that time against the forecast and the usual house load. Needs a house consumption source. For example: start the dishwasher when the surplus stays above 1800 W for the next 120 minutes.
Solar installation
The home battery will be full today
Based on the state of charge now and the expected surplus for the rest of today. Needs a home battery in the app settings, tab Measurement. For example: when it will be full anyway, let the car charge on the sun first.
Solar installation
The sun has been shining on Roof plane for at least 15 min
True while the sun is in front of this roof plane and not behind an obstacle of the measured horizon. Clouds do not count here. For example: charge the car on the sun only while the sun shines on roof plane 2. The minutes ask that it has held that long: 0 looks at this moment only.
Solar installation
The sun has been behind an obstacle for at least 15 min
True while the sun is up but hidden by a tree or building of the measured horizon. Without a measured horizon it is never true. For example: skip lowering the sunscreen in the evening when the sun is already behind the trees. The minutes ask that it has held that long: 0 looks at this moment only.
Solar installation
Direct sunlight has been falling on a surface facing ... at 90° for at least 15 min
True while the sun is in front of this surface, not behind an obstacle, and your panels show it is really sunny. 90° is a wall or window, 0° is flat. For example: when the living room gets warmer than 24 °C, lower the sunscreen only if direct sunlight falls on a surface facing south at 90°. The minutes ask that it has held that long: 0 looks at this moment only.
Solar installation
Measured power has been ... 1500 W for at least 10 min
What the panels really make now, not the forecast. For example: when the washing machine is ready, start it only if the measured power has been above 1500 W for 5 minutes. The minutes ask that it has held that long: 0 looks at this moment only.
Solar installation
Roof plane makes much less than the others
True while this roof plane has made less than half of what the best other plane makes, compared with each own forecast, for half an hour. For example: skip the daily report on a day when roof plane 2 lags.
Solar installation
More than 10 kWh was measured today
Looks at the measured total of today. For example: only run the pool pump in the afternoon when more than 8 kWh was measured today.
Solar installation
... reaches 60 % of a clear day
Compares the forecast with what your roof makes on a clear day of that date, so one Flow works the whole year: 15 kWh is a top day in December and a grey one in June. For example: charge the home battery from the grid at night only when tomorrow does not reach 40 % of a clear day.
Entonces...
All installations
Find the best 3 hour window for all installations ...
The window with the most expected solar energy of all installations together, with start, end and energy as tokens. For example: 3 hours tomorrow for charging the car.
Advanced
All installations
Get the expected production of all installations for the next 3 hours
Expected and cautious kWh of all installations together. For example: start the heat pump boiler when more than 3 kWh is expected in the next 2 hours.
Advanced
All installations
Get the expected production of all installations from ... to ... ...
Expected and cautious kWh of all installations together. An end before the start runs into the next day. For example: before you leave, check how much is expected between 13:00 and 17:00 to decide whether the car charges at home.
Advanced
All installations
Find the best start over all installations for 2000 W during 120 minutes ...
The start at which the solar power of all installations together covers most of the appliance. For example: a washing machine of 2000 W for 90 minutes; wait the minutes until the start, then switch it on.
Advanced
Solar installation
Report measured solar power of 2450 W
Run this at least every few minutes with the power of your panels, not your inverter output with battery. The device uses it to measure what you really produced and to learn. For example: when the power of your inverter changes, run this card with that power as a token.
Solar installation
Report solar energy meter of 19830.4 kWh
A total or a daily yield counter both work. When you report a meter, reported power is ignored. For example: every 5 minutes with the daily yield of the inverter.
Solar installation
Report 1850 W measured on Roof plane
For inverters that report every string. Feed each plane at least every few minutes; then every plane learns its own correction and a failing string stands out. For example: PV1 power on roof plane 1 and PV2 power on roof plane 2.
Solar installation
Report 398 V and 6.4 A on Roof plane
Many inverter apps show the voltage and current of each string (PV1, PV2) but not its power. This card multiplies them for you. For example: PV1 voltage and PV1 current on roof plane 1.
Solar installation
Find the best 3 hour window ...
Gives the start, the end and the expected energy of the window with the most solar energy, as tokens. For example: 2 hours in the rest of today, then a push message with Starts at, or wait Minutes until start before switching on a plug.
Advanced
Solar installation
Get expected production between ... and ... ...
Gives the expected and the cautious energy between the two times as tokens. For example: 10:00 to 16:00 tomorrow, to decide tonight whether the car can wait for the sun.
Advanced
Solar installation
Get expected production for the next 3 hours
Gives the expected and the cautious energy for the coming hours as tokens. For example: the next 3 hours, before you start the dryer.
Advanced
Solar installation
Refresh the forecast now
Fetches a new weather forecast now instead of waiting for the next refresh. For example: as the first card of the Flow that decides on charging the battery tonight.
Solar installation
Forget what was learned
Use this after cleaning the panels, removing shade or changing the installation. For example: once, after you added panels.
Solar installation
Find the best start for 2000 W during 120 minutes ...
Picks the start where the sun covers the largest share of what the appliance uses. Per quarter hour only the solar power up to the appliance's own power counts, so a short peak does not win over a steady stretch. For example: dishwasher 1800 W for 120 minutes in the rest of today, then wait Minutes until start and switch on its plug.
Advanced
Solar installation
Get the forecast for ... as JSON
Power in W per 15 minutes for one day, or per hour for both days, with the day total and the cautious total in kWh. Hours without sun at the start and end of a day are left out. For example: pass it to a HomeyScript that draws its own chart.
Advanced
Solar installation
Battery plan
Whether the home battery gets full today, at what time, and how many kWh it still lacks to be full by tomorrow evening. For example: at 22:00, charge from the grid when the shortfall is above 3 kWh. For a plan that also handles a grey day: Battery plan on the cautious forecast.
Advanced
Solar installation
Battery plan on the cautious forecast
The same as Battery plan, but counting on the cautious forecast, which is reached 9 days out of 10. Use it when a wrong guess costs money. For example: at 22:00, charge from the grid when the shortfall is above 3 kWh, so a grey day does not leave the battery empty. When only one weather model is available, it gives the same as Battery plan.
Advanced
Solar installation
Find the cheapest start for 2000 W during 120 minutes ..., prices from Homey Energy
Finds the start with the lowest cost for the energy the expected surplus does not cover. Leave prices empty to use the dynamic prices of Homey Energy, or fill in a JSON list of prices per kWh from a price app (24 hourly or 96 quarter-hourly numbers from midnight, or objects with a time and a price). For example: washing machine 2000 W for 180 minutes in the next 24 hours.
Advanced
Solar installation
Get how sunny ... will be
Gives the forecast as a share of what your roof makes on a clear day of that date. For example: put the percentage in the morning push message, so 30 % reads as a grey day in every season.
Advanced
Solar installation
Get the position of the sun
Height and direction of the sun now, the height of the obstacle in that direction from the measured horizon, and the roof planes the sun shines on. For example: log the sun height every 15 minutes, or use it in a calculation for a sunscreen.
Advanced
Widgets
Asistencia
¿Tienes algún problema con esta aplicación? Contacta con el desarrollador aquí.
Novedades
Versión 2.4.1 — After the roof is measured, the screen now says it comes from height data of the building and not from your panels, and how to point it to another building. The optimistic estimate is no longer higher than your panels can give under a clear sky.
PV Forecast
Esta aplicación puede administrar todo tu Homey.
PV Forecast no es compatible con el Homey seleccionado.
PV Forecast se instalará en Homey en breve.
Registro de cambios
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Le haremos saber a Danny van Soerland que te encanta la aplicación.
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Avisaremos a Danny van Soerland para que esté al tanto de las sugerencias.
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