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Build your perfect 12V electrical system without the guesswork. VoltPlan makes electrical planning for vans, boats, and off-grid setups simple and fun.

Elmeasure
SoFi
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NTS Utility Billing
Brady PLC
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Reengen Energy IoT Platform
Home Energy Management SaaS Solutions

Which is more popular?
Based on our record, Opower seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | voltplan.app | opower.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Germany · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


VoltPlan is an intuitive web app that helps DIYers, vanlifers, boaters, and off-grid enthusiasts design safe and reliable 12V/24V electrical systems—without needing an engineering degree. Plan your entire setup with visual wiring diagrams, automatically calculated wire gauges and fuse sizes, and...
No description of Opower yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Opower is recommended for utility companies seeking to improve customer interaction and operational efficiency through advanced data analytics. It's also suitable for environmentally conscious organizations focused on reducing their carbon footprint and promoting sustainable energy practices.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing VoltPlan.app and Opower.
VoltPlan.app's answer
VoltPlan is built with Next.js for speed and scalability, DaisyUI for a clean and accessible UI, and PocketBase as a lightweight backend for syncing and persistence. The app is designed to feel fully local and responsive while enabling optional features like cloud saves and sharing.
VoltPlan.app's answer
VoltPlan combines visual wiring design with smart calculations for wire gauge, fuse size, and battery runtime—all in one easy-to-use browser-based tool. It’s built for real-world 12V/24V setups, not just abstract circuits.
VoltPlan.app's answer
VoltPlan is free for personal use, requires no signup, and gives you accurate results tailored to vans, boats, and off-grid systems. While others focus on industrial schematics, VoltPlan puts DIY users first—with a library of real-world components and one-click PDF export.
VoltPlan.app's answer
DIY van builders, boat owners, and off-grid enthusiasts who want to safely plan and share their electrical systems—without spending hours learning electrical engineering.
VoltPlan.app's answer
VoltPlan started as a tool for designing a boat’s electrical system. Frustrated by spreadsheets and inconsistent advice in forums, we built something better: a clear, shareable, and accurate way to plan real-world 12V/24V installations. Today, it helps thousands build with confidence.
Share your experience with using VoltPlan.app and Opower. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking VoltPlan.app since Aug 2025.
The link seems to legitimately go to the opower.com site that LUS uses, and there is a token passed that presumably is unique to each customer and authorizes a password change. Sending something like that in an unencrypted email is... Source: almost 5 years ago
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