How to Read Your Solar Inverter Daily Generation in Pakistan
Your solar inverter already tells you how your system is doing, but in numbers that look alike: power in kilowatts, energy in kilowatt-hours, a figure for today, another for the month, and a lifetime total. This guide explains each figure in plain words, what a normal day looks like, and the short evening routine that catches faults early.
Where to Find the Figures
Most inverters show the figures on a small display on the inverter itself, or in a phone app supplied by the inverter maker. On the display, one button usually cycles through the screens; in the app, the figures sit on the home screen or under daily, history, or statistics. Names differ by brand, but the figures are the same, so check the manual for your exact model.
The Four Figures That Matter
Learn these four figures and you can read almost any inverter display with confidence.
| Figure | What it means | Unit |
|---|---|---|
| Current power | What the panels are producing right now | Watts or kilowatts |
| Today energy | Total produced since sunrise; resets each morning | Kilowatt-hours (units) |
| Month energy | Total produced since the first day of the current month | Kilowatt-hours (units) |
| Total energy | Everything produced since installation; never resets | Kilowatt-hours (units) |
Current power rises in the morning, peaks around midday, and falls toward sunset, changing minute by minute as clouds pass. A low reading early or late in the day is normal; the same low reading at midday on a clear day is worth noting. Today energy, often labelled daily yield, is the single most useful daily figure: it only grows during the day, resets each morning, and is the number for the evening routine below. Month energy shows a slow week without worrying about one cloudy day. Total energy should always grow, slowly in winter and faster in summer, but do not judge a system by it alone: a large total may simply mean the system is old.
Grid figures on some displays, such as power imported or exported, differ from generation: generation is everything the panels produced, part is used in the home at once, and only the surplus is exported. That is why inverter generation is normally higher than the export figure on your bill.
What a Normal Day Looks Like
On a clear day, generation follows the shape of a hill: low after sunrise, high around midday, then falling toward sunset, with short dips when clouds pass. A fully cloudy day makes a lower, flatter hill, and a foggy winter morning starts late and never reaches the summer peak. For more on the winter drop, see our guide to solar panel output in winter in Pakistan.
Compare like with like: a clear day with another clear day, a cloudy day with another cloudy day. If two clear days in the same month give very different today energy figures and nothing changed at home, investigate, using your installer handover sheet as the reference range.
The Two Minute Evening Routine
Check the display or app once a day, in the evening after sunset, when today energy has stopped growing. Write down the date, the weather in one word, such as clear, cloudy, or foggy, and the today energy figure. A notebook by the meter or a dated screenshot both work. After two weeks you will have a personal baseline for clear, cloudy, and foggy days in this season, so you can tell a normal cloudy day from a real problem at a glance, and give your installer exact dates and figures.
Warning Signs That Need an Installer
Call your installer, and do not open the inverter cover yourself, if you see any of these:
- Today energy stays at or near zero on a clear, sunny day while the panels are in sunlight.
- Today energy suddenly drops to roughly half of your usual clear day figure, with no new shade or weather explanation.
- The display shows an error code that does not clear, or one part of the system reads zero while the rest produces normally.
- The inverter is silent, dark, or unusually hot to the touch.
When you call, have three things ready: the date the problem started, the today energy figures for the last few days, and a clear photo of the display showing the error code or the zero reading. A fault reported with dates and figures is fixed faster than a general complaint. Do not keep resetting the inverter to clear the code: repeated resets can hide the fault record your installer needs. If your system stops entirely during a power cut, read why solar stops during load shedding before assuming a fault.
Generation, Export, and the Bill Are Three Different Numbers
This is the most common confusion, and it causes many unnecessary complaints. Generation is what the panels produced, self use is the part your home consumed during the day, and export is only the surplus sent to the grid. Your bill deals with import and export, not with generation directly. A home that runs the washing machine, geyser, and iron at midday will export less than a home that runs everything at night, even if both homes generated exactly the same amount.
Before questioning a bill, compare the inverter today energy total with the meter export reading for the same period. If generation looks normal but export looks low, the likely explanation is daytime home use, not a broken system. To check the bill side, use the net metering bill calculator, and if you are still choosing equipment, the solar inverter size calculator can confirm the right size for your load. Learn the four figures, note today energy each evening, and compare clear days with clear days.
Frequently asked questions
What is the difference between current power and today energy on my solar inverter display?
Current power is what the panels are producing right now, measured in watts or kilowatts, and it changes minute by minute as clouds pass. Today energy is the total produced since sunrise, measured in kilowatt-hours or units, and it only grows during the day. A low current power reading in the early morning is normal, while a low today energy total at sunset tells you the whole day was poor.
Why is my inverter generation figure higher than the export figure on my bill?
Generation is everything the panels produced. Your home uses part of that power during the day, and only the surplus is exported to the grid. The bill records import and export, not total generation, so generation is normally higher than export. The gap is daytime home use, not an error, unless generation itself has also fallen.
What should a normal solar generation day look like on the inverter display?
On a clear day, generation follows the shape of a hill: low after sunrise, high around midday, and falling toward sunset, with short dips when clouds pass. A foggy winter morning starts late and never reaches the summer peak. Compare clear days with clear days in the same month, because comparing a sunny summer day with a foggy winter day proves nothing.
How often should I check my inverter generation, and what should I write down?
Check once a day in the evening after sunset, when today energy has stopped growing. Write down the date, the weather in one word such as clear, cloudy, or foggy, and the today energy figure. After two weeks you will have a personal baseline for clear, cloudy, and foggy days in the current season, which makes a real fault easy to spot.
My inverter shows near zero generation on a sunny day. What should I do first?
Do not open the inverter cover and do not keep resetting it. Note the date, photograph the display showing the zero reading or any error code, and collect the today energy figures for the last few days. Then call your installer with those dates, figures, and the photo. A code that keeps returning is a symptom to be fixed, not a glitch to be cleared by repeated resets.