--- title: Two properties had nearly identical electricity bills... description: A CTO recounts building a non-invasive electricity-measurement system for a solar company in Indonesia after realizing that monthly bill totals hide the daily... canonical: https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Two properties had nearly identical electricity bills and needed completely different solar systems | daily.dev og:description: A CTO recounts building a non-invasive electricity-measurement system for a solar company in Indonesia after realizing that monthly bill totals hide the daily... og:url: https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg og:image: https://api.daily.dev/og/posts/PXtGJvjxG.png og:image:alt: Two properties had nearly identical electricity bills and needed completely different solar systems og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Two properties had nearly identical electricity bills and needed completely different solar systems **[Medium](https://daily.dev/sources/medium_js)** · 6 min read · 0 upvotes · 0 comments ## Summary A CTO recounts building a non-invasive electricity-measurement system for a solar company in Indonesia after realizing that monthly bill totals hide the daily usage patterns that actually determine solar sizing. Instead of refining estimates from proxy data (bill amounts), the team deployed clip-on sensors that measure real consumption over two to four weeks, feeding readings into a backend that generates accurate solar sizing recommendations. The piece is framed as a broader lesson: when facing expensive decisions built on proxy data, measuring the real world often beats building smarter models. The measurement system is still in testing, comparing three commercial meters on accuracy, connectivity, and installability, with no performance numbers published yet. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The New Standard for Accurate Power Measurement in AI Data Centers](https://daily.dev/posts/the-new-standard-for-accurate-power-measurement-in-ai-data-centers-gicluhu8e) · Cisco · 0 upvotes · 0 comments - [What a Year of Solar and Batteries Really Saved Us in 2025](https://daily.dev/posts/what-a-year-of-solar-and-batteries-really-saved-us-in-2025-jird3kvdp) · Scott Helme · 0 upvotes · 0 comments - [Solar panels that plug into your wall](https://daily.dev/posts/solar-panels-that-plug-into-your-wall-apjujcgfg) · Hacker News · 0 upvotes · 0 comments - [AI companies touting scale as how much…](https://daily.dev/posts/ai-companies-touting-scale-as-how-much--ohmkeg36o) · Justin Searls · 0 upvotes · 0 comments - [Garlic Peel Sensor Powers Low-Cost Home Security Sensor](https://daily.dev/posts/garlic-peel-sensor-powers-low-cost-home-security-sensor-5ba221w0y) · IEEE Spectrum · 0 upvotes · 0 comments --- Tags: [#hardware](https://daily.dev/tags/hardware), [#iot](https://daily.dev/tags/iot), [#sensors](https://daily.dev/tags/sensors) [View this post on daily.dev](https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Two properties had nearly identical electricity bills and needed completely different solar systems","url":"https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg"},"datePublished":"2026-08-24T02:18:09.285Z","dateModified":"2026-08-24T02:19:13.076Z","description":"A CTO recounts building a non-invasive electricity-measurement system for a solar company in Indonesia after realizing that monthly bill totals hide the daily...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0ba3fce3a281ce53d3128008582f5e37?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/0ba3fce3a281ce53d3128008582f5e37?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Medium","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Medium","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/medium","url":"https://daily.dev/sources/medium_js"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/two-properties-had-nearly-identical-electricity-bills-and-needed-completely-different-solar-systems-pxtgjvjxg","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"hardware,iot,sensors","timeRequired":"PT6M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Medium","item":"https://daily.dev/sources/medium_js"},{"@type":"ListItem","position":3,"name":"Two properties had nearly identical electricity bills and needed completely different solar systems"}]} ```