Posts tagged with "power-bill"


  • May 22, 2023

    How Much Money Did My Solar Panels Save? - 2023 Edition

    A long time ago I wrote a post on how much money my solar panel was saving me. In the post I promised to write another post in November 2022 with updates. Well, lots of things happened and I completely forgot about it until one reader reminded me requesting for an update. So here it goes. It has been more than 2 years since I installed a 320W solar panel and I have been diligently collecting data from my panel, our consumption and how much we are pulling from the grid. Very recently I finally finished my code to fetch the data, massage it and used some nice libraries to draw the graphs so I can analyze the data.

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  • Nov 12, 2022

    Savings Due To Solar Panel

    Last year, around this time, I wrote a post on how much money my solar panel was saving us. I was supposed to write a follow up to it after one year, but I completely forgot about it. Thankfully, a reader reminded me to give an update and here I am. Unfortunately even after one year I still did not finish the software that was supposed to instantly tell me how much I am saving each month. I should be able to get that information because I have a bunch of sensors monitoring my solar panel system. They measure the power generated by the panel, the amount of power we are using at home and how much power we are drawing from grid. All that data is stored in the cloud in Firebase. Yet I did not finish that part of the software. And to think I am actually retired. Wonder where all my free time goes. Anyway, in this post I will give a guesstimate using our electricity bills as a proxy.

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  • Nov 11, 2021

    How Much Money Did My Solar Panels Save?

    It has been more than 6 month since I installed my lone 320W solar panel. So I wanted to check if it was doing me any favors and how much money is it saving. Normally one should wait for a full year to make any kind of useful analysis. But I get easily excited when it comes to doing any kind of data analysis and here I am at it again. It is a very small installation and hence the savings aren’t huge, but at least I am able to verify my predicted numbers (units of electricity) against the real numbers. Did I have any savings or was this whole solar panel project a waste of my time and money. Let’s find out.

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  • Jun 19, 2021

    Solar Panel Project - Inception

    I have been wanting to setup solar panels for several years now. It all started way back in August 2015 when for the first time the electricity bill touched Rs. 2,000. We don't even have air conditioner so what gives? At this point I started looking at the past bills and noticed the slow rise in unit rates. If you are interested, I already wrote a post on the inflation of electricity bill. That got me thinking if it is time for some solar panels.

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