Make data-driven decisions about solar, battery storage, and electricity tariffs
Compare the costs and savings of different PV and battery sizes and assess which electricity tariff suits your consumption. Use your own consumption data or create a consumption profile.
Plan PV & battery storageWhich PV and battery sizes fit your household? Compare modeled yield, self-consumption, and economics before investing.Add battery storageWhich battery size fits your existing PV system? Compare modeled savings, self-sufficiency, and payback using your consumption.Compare electricity tariffsCompare fixed and dynamic electricity tariffs using your consumption profile and historical prices from a selected reference year.
Plan
PV & battery storage
Compare PV and storage combinations using your consumption, budget, and selected objective.
- Compare purchase costs with ongoing savings
- Compare self-consumption and grid imports across system sizes
- Calculate when the investment pays back under the selected assumptions
Slide 1 of 7: Roof layout and panel placement
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Roof layout and panel placement
Add
battery storage
Compare battery sizes for your existing PV system using your consumption and selected objective.
- Calculate additional self-consumption and avoided grid imports
- Compare purchase costs and savings for each battery size
- Calculate when adding a battery pays back under the selected assumptions
Slide 1 of 6: Return heatmap for battery capacity and power
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Return heatmap for battery capacity and power
Compare
electricity tariffs
Compare fixed and dynamic electricity tariffs using your consumption profile and historical prices from a selected reference year.
- Compare hourly consumption with market prices
- Compare modeled annual costs for both tariff models
- Assess which tariff would have been cheaper in the reference year
Slide 1 of 3: Price profile: fixed vs dynamic
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Price profile: fixed vs dynamic
Beta version: feedback welcome
Voltary is in beta. Errors and longer calculation times may occur. Feedback on results or usability helps us improve Voltary.