• 2 minutes ago a request for Solar Power + Energy Storage quotes was made from Emu Plains, NSW.
  • 3 minutes ago a request for Solar Power + Energy Storage quotes was made from Trevallyn, TAS.
  • 3 minutes ago a request for Solar Power + Energy Storage quotes was made from Bellfield, VIC.
  • 4 minutes ago a request for Solar Power + Energy Storage quotes was made from North Sydney, NSW.
  • 5 minutes ago a request for Solar Power + Energy Storage quotes was made from Athelstone, SA.

Do Solar Panels Work On Cloudy Days?

Solar power at work on a cloudy day

Not surprisingly, solar panels work great when the sky is blue and there’s lots of sunshine. However, you may be wondering what happens when the weather is dull, dark or pouring with rain?

Do solar panels still work on cloudy days?

The answer is yes - just not quite as well… which means up until recently clouds and rain cost solar homeowners money.

Thankfully, there is now a solution to this frustrating problem.

‚ÄčAustralians with solar are now able to power
their homes -- even when it's overcast or raining

Here's the story...

On a cloudy day, a typical solar system will produce approximately 10-25% of its rated capacity. That means it only generates a fraction of the power that it would normally.

This can be very frustrating because every time the clouds roll in your electricity bill starts rising. You have to hand over more of your hard-earned cash to the energy corporations.

Luckily, in Australia we still get enough sunshine all year round to make solar a great investment - even when you take these cloudy days into account.

But, if you are interested in cutting your energy bills further, so you have more money to spend on your yourself and your family, there is now an option available.

Solar batteries can save you money by storing free energy for use when it’s cloudy Solar batteries have been around for a while, but up until recently, the costs were very high, the equipment was bulky and they were difficult to use. Except for people who lived off the grid, they were a poor investment.

Thankfully that has changed in recent years.

The price of solar batteries has dropped dramatically. In many cases, they are now an excellent investment for homeowners in cloudy regions who want to reduce their electricity costs.

How do they work?

‚ÄčSolar batteries work by allowing you to store energy on sunny days - and then using this free energy when it’s cloudy or raining... so you don't have to pay the high rates that energy companies demand.

There are several solar batteries on the market, but the one I recommend is the Tesla Powerwall 2.

First of all, the Tesla Powerwall 2 has double the capacity of the original Powerwall - 13.2kWh of usable energy storage. This is more than enough to power most homes during overcast periods.

And if you often get several cloudy days in a row, you can connect nine Tesla Powerwall 2 batteries together to keep getting free electricity for longer.

This means you can potentially...

Save thousands of dollars every year on electricity bills depending on where you live...

That's only the beginning...

There are several other benefits to having a Tesla Powerwall 2 system installed.

For example, you can protect your home from blackouts, so if there's a power outage you can still turn on the lights, keep the fridge cold and enjoy hot showers. Plus, it gives you more self-sufficiency and freedom from the electricity companies.

The Tesla Powerwall 2 is very safe. There are no live wires or unsightly vents - and the lithium ion battery requires minimum maintenance. You can even monitor your electricity usage from your iPhone or Android device!

Are solar battery systems really worth the investment?

Case studies suggest that the system can reduce your mains grid electricity consumption by as much as 80% based on standard system installation in a capital city

If you use most of your electricity during morning and evenings, you can potentially enjoy similar cost savings and a great return-on-investment too.

Another consideration is the upfront cost.

Many people don't have the money sitting round to buy a system up front. That’s why 3Quotes has a special offer where you can get the system installed for as little as $35 a week on an interest free loan.

If you would like to find out more about this offer, contact us today. The sooner you get the system, the sooner you'll start saving on electricity bills even on cloudy or rainy days.

Click here to discover how much you can save with batteries now

24 comments so far

  • Stephan Saul 4 years ago

    There are lots of reports that these lithium batteries have a high dropout rate. Up to 40%. Is this still viable to take this risk? What is with the old technology of the "Edison batteries" (Zinc - iron batteries). They are very reliable, can cope with deep cycle effects and do not have any "memory effects". Regards Stephan Saul

  • M 7 years ago

    You will actually find the panels produce DC which then go through an inverter to change it to AC so you can then use your everyday electrical appliances.

  • Scott 7 years ago

    Just a quick reality check. If everyone gets solar panels, who wil be left to pay all of the feed in tariffs costs. Currently that bourdon is put directly onto the people who don't have solar panels. As of right now energy supply authorities are starting to lobby the governments to make people who have solar connections pay a lot more for there use of grid power. This makes sense, as it is unfair on people without solar panels to subsidise the ones with. The electricity network that supplies homes buildings (whatever), still has to be built to the full capacity to your home with or without solar due to the peak loading being between 4 - 8pm, when the sun doesn't shine so brightly. That is when solar uses jump back onto the grid, forcing network operators to have to build the infrastructure to this level. The "energy" that is put back onto the grid from solar panels apart from costing electricity supply authorities a lot of money to regulate etc, isn't a very smart way of dealing with massive loads. Solar panels have there place for very low load situations I recommend getting solar panels and getting the rebate tariffs, when the cow is giving milk, you take it don't you, just so happens to be golden milk.

  • Some guy 7 years ago

    The author is wrong here , PV cells use "light" to produce electricity , not heat of the sun !! So even on cloudy days the PV cells on your rooftop are able to produce electricity because "light" is still available !

  • Graham Nowland 7 years ago

    Solar certainly is breaking through, yet Australia lags behind countries with much less sun. In Britain France Germany and Scandinavia, all places with low angle sun and many clouded days, solar energy is gathered by domestic users, who can make an overall annual profit by selling their excess to the grid. Here with massive amounts of sun available, we continue to ask questions about whether it will work on clouded days or with shadows or filtered sunlight. The Australian government should give solar power the critical mass it needs by legislating that all new buildings incorporate solar panels in the roofing and/or high walls. Solar roofing/wall fitting should become as mandatory as proper plumbing is now. The Australian government seems to be protecting fossil fuel traders and obstructing solar energy growth as well as ignoring othermassive renewable energy sources. Fossil fuel should be a supplementary reserve to a mass produced renewable energy system, not the other way round as it is now.

  • con coutinho 7 years ago

    Hi Kate, Your comment taken from above "And at night, the system pulls power from the grid. So your dinner party can still be a roaring success – and your guests aren’t left eating cereal and salad". Does this mean that we can still recover power for free or do we pay for it even though we have provided to the grid in the first place?

  • Thommo 7 years ago

    But when everyone is on solar who will pay the rebates??? And how will those who cannot afford solar pay their huge power bill? This will happen as the more people use solar the higher the power companies must push their charges to retain their profits.

  • Don't be conned. Munchen panels made in china 7 years ago

    Munchen panels are made in China. Just had whole roof of panels replaced. I paid extra for German panels. Saw the made in china sticker on the back when they were taken down. replaced with panels made in China. I guess Muchen have been bitten big time by getting things manufactured on the cheap. 9000 panels around Adelaide to be replaced. this recall has been kept quiet.

  • John 7 years ago

    As a facility manager I remain to be convinced about the long term benefit (to the purchaser) of PV arrays. The issue is when something goes awry with the inverters etc they are not cheap to repair - replacement is usually the option. Microinvertors per dual or triple array probably the best way to go. And you have to keep the panels clean.

  • Marg 7 years ago

    Great discussion with actual kW achieved, much appreciated. I am in sydney & currently (pardon the pun) trying to work out how /what PV to install. Best roof option is west-facing on a nearly flat roof which gets v hot in summer & some shade in winter, so not good on each count as I understand it. Hmm ... anyone any suggestions?

  • Beamer 7 years ago

    Even worse Graham, was the theft, by WP, of a perfectly good power meter, which gave a one for one credit on power exported to the grid, and its replacement with the Blatant Daylight Robbery Meter plus the additional theft of $360 for the meter.

  • viv 7 years ago

    Can I store the power generated during the day to use at night when there is no sun

  • Jarryd 7 years ago

    Simon, your panels will produce more on a cold sunny day rather than a hot sunny day.so summer isn't always the best time for solar and people who have sleet on their panels when the sun is on them will benefit highly

  • Kevin 7 years ago

    I wonder if there is an opportunity for a third party to buy the excess solar power of consumers rather than the generators . We only get between 6 to 7 cents /Kwn because there is no competition to purchase it.

  • john way 7 years ago

    asx:she shares vanadium energy storage solutions patented wave energy production oz surrounded by water

  • Jeff 7 years ago

    We generate over a year much more than we consume. We are in credit with power company. The day that changes, we will consider going off grid. Well Worth removing any shadow from panels, trees etc.

  • Graham 7 years ago

    Yes, the not so good part though is that you sell your excess power to the company you are sourcing power with at a rate of 6 or 7 cents per kWh (during daylight time) but when you import some power at night you pay the full rate of 36 or 37 cents ! Means you need need to export 6 kWh to get a free single kWh at night ! Grossly unfair ! The sooner the battery systems are introduced the better for everybody - except the power providers of course !

  • Simon 7 years ago

    Hi Kat, There is another point to make here, regarding the type of panels you have. Basically you have mono/poly silicate, which most people would have. They are not great in shaded light. Then you have "thin, flat panel" ones, which are much more productive at lower light levels. These are coppery looking, like solar powered calculators have. Unfortunately, you need around twice the surface area of thin flat panels, hence the popularity of the silicate panels. My panels get mostly afternoon sun, but one foggy morning I was shocked to see 2.8kw (out of 3.6) at 10am in the morning. That's the same as what I get in the middle of the day in summer. On that day, the sky was clear in the east, but foggy to the west. I can only assume the fog/clouds were reflecting so much UV, it saturated the panels. Only lasted about half an hour, then dropped back to just over 1kw. Glad I was home at the time to see the weather or I'd STILL be scratching my head over that one! Another thing to consider when researching panels is their temperature sensitivity. Panels make less power as they get hotter, some degrade worse than others. Stinking hot day in summer, I NEVER get more than 2.8kw. But a cold autumn day with bright sun, I'll hit 3.6kw no worries. Very happy with my system, gas and electricity have been zero cost for me the last 4 years, plus it kicks in around half the rates bill as well.

  • steve 7 years ago

    Teresa You would have to get someone to come and have a look at the shading that would occur. For single inverter systems shading is a real killer of output, if one cell is shaded it chokes the whole system down. A more recent trend is to have micro inverters on each panel with AC coming directly from each panel. This means shading impacts only the panel(s) affected and the system can still produce useful power. ATM the micro inverter systems are slightly more expensive.

  • Tony 7 years ago

    Dye solar cells are known to produce consistent (but lower) power than conventional cells, even during cloudy or rainy days. Although they aren't commercially available for home consumers, it's a technology to look out for in the future.

  • Magilla 7 years ago

    PV cells are strictly driven by light not heat. In fact, performance diminishes due to high temperature. Further, clouds have a significant effect on generated power, reducing by as much as half or more compared to a clear day. @Teresa - tree shade WILL reduce the solar generated power, you won't get the full rated capacity. You will need to install say 25% more cells to get the capacity you want.

  • Chris 7 years ago

    It may be less, certainly much less. My 3kW system in Melbourne produces 10kWhours or more on sunny days, but less than 2 kWhrs on cloudy days.

  • tau 7 years ago

    Correction, PV systems dont draw power from the grid at night. They shut down.

  • Teresa 7 years ago

    Hi We live in theHills district and are surrounded by tall gum trees. Without chopping down all the trees, would it be worth getting solar panels?

Leave a comment

Get 3 Quotes