| What it does | Independent calculator to check if a home battery pays for itself in your situation
| Fast, practical calculators, converters and online utilities for work, projects and everyday questions
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| Stage | Not given
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| Founded | Not given
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| Based in | NL
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Compares battery models from 23 brands on payback time and net result after 15 years
- Calculates with real hourly EPEX prices for dynamic energy contracts
- Processes the end of net metering from 1 January 2027
- Provides negative buying advice if purchase is not worthwhile
- No account or email required
- Generates 10-page PDF advice report with lowest prices from 11 shops
- Free 22-page PDF handbook about home batteries
- Analyzes consumption and solar generation hour by hour for full year
- Three scenarios: pessimistic, most likely and optimistic outcomes
- Updates prices from 11 online shops every morning automatically
| - 240+ free tools across 15 categories
- No account or sign-up required
- Browser-based calculations without uploading files
- Works on desktop, tablet and mobile devices
- Fast and easy interface
- Available 24/7
- Adjustable assumptions for some tools
- Business, construction, finance and math tools
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| What makes it different | - Truly independent: sells no batteries, has no arrangements with installers, publishes negative buying advice
- No personal data collection: zero signup required, immediate results without email
- Built from personal need: creator did his own calculations after a misleading sales pitch
- Comprehensive research: 384 example households analyzed in 26,112 calculations
- Shows all calculation assumptions: transparent methodology with public data sources
| - Simple interface designed to get from question to answer with minimal friction
- All tools free without registration or account creation
- Calculations performed directly in browser for improved speed
- Wide variety of specialized tool categories for different needs
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 16 ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 18 | 12 |
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| Citation Flow (Majestic) | 24 | 17 |
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| Referring domains (Majestic) | 18 | 4 |
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