How Do Solar Panels and Batteries Work Together for Home Energy?

Question

Could someone explain how solar panels and batteries are integrated in the power system of a house including an electric vehicle?

Answer 1

When the sun shines anywhere across your roof, the solar panels installed generate electricity sufficient enough to run household appliances directly. If the demand exceeds the available solar power, the remainder will be drawn from the grid. At night, when there is no solar generation, grid electricity is usually required. This can be done for the most part because there is a battery storage system. There is a complete loop as it is. The solar energy storage is charged by batteries during the day, and at night, the stored energy is used, lowering or eliminating grid dependency. In theory, this arrangement could make you completely grid-independent, particularly if you have an electric vehicle that you can charge at home as well.

Comments

I've been working in the solar industry for over 14 years and this is hands-down one of the best contents out there explaining solar, batteries, and home energy use. Such a great resource for the public - thank you!

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My dad recently got solar panels and everytime I visit he all excited shows me the graphs. Thanks to this content I now understand it more

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As an Electrical Engineer myself, this content is so educational and explains the concepts in a very understandable way. This type of content should be used to teach seniors in high school or young college students. Good job‍♀️

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One thing I noticed about this content is how being dependent on the sun for energy has made you more aware. You’re aware of weather patterns in your geographical location and aware of how much energy your appliances pull. It’s pretty cool.

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As an energy engineer familiar with these terms and concepts, I must say your explanations using animation are super spot on. It's impressive to guess what the next thing you'll say is, and then you match it with incredible animations.

Also, the reason why May gives the best output is because the efficiency of these panels drops beyond a certain temperature limit.
Thumbs up to you Marques.

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This was the single most informative content about solar power + batteries that I’ve ever seen. Kudos! VERY well researched and very good production values.

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This is by far the most concise and simple solar content I have seen yet. Thank you so much for making something that I can send to non tech/solar people and have them understand it!

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• Renovate your home to passive house standards
• Add Energy Recovery Ventilation
• Replace HVAC (gas and A/C) with Air sourced heat pumps or Ground sourced heat pump with hot water

Your house will feel more comfortable and healthier while completely running off electricity.

Ensure your home will be solar and battery ready when you renovate (especially when you replace the rood). Also, by end of the 2020s you'll be able to run the house off the car battery supplementing the house batteries.  Car runs low, run out to an area that has power to charge and then bring those electrons home for the house.

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Solar is awesome! With my brother we were able to build $4000 off-grid system with a 4kW peak power output and 10kWh battery storage for our parents house.
Their electricity bill was around $1500 a year, which is now reduced by $1000 from solar, so the payback period is around 4 years.
They live in Europe where the electricity costs are pretty high, so though they were hesitant at first, now they're pretty happy being more independent from the power company.
I really like how affordable the solar tech has become, especially if you are willing to build it yourself. It was a great learning experience too.

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Hey marques,
Just wanted to point out another thing regarding most amount of production in May, the efficiency of these solar panels also depends on temperature. If temp. Increases beyond a certain limit their efficiency goes down. So, if its like sunny days of june and july where the temperature is very high, the efficiency of these panels goes down a little bit. Thats why in May it is producing the max as the temp. is just about right.
As always great content.