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CLUSTER CALCULATOR-ESTIMATES-COST · 16 ENTRIES · EARLIEST ENTRY unknown

Energy savings calculators

This cluster is made of web calculators that estimate household energy costs, savings from renewable or dynamic tariffs, and equipment sizing for solar and heat pumps. Only one dated entry exists before the index start, and nine members have no source date, so the cluster's dated history is too thin to read a shape from — it predates the index or its members are undated. All traction leaders are at zero stars, so no member stands out on activity.

Entry timeline

ENTRY TIMELINE

MAR 2026: 1AUG 2026: 11SEP 2026: 3OCT 2026: 1
MAR 2026OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 9 ai-built · 1 hand-coded · 6 unlabelled

Operator · 3 hobby · 4 commercial · 9 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 16 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Elektrifi0★8 days—hand-codedhobbyElectricity bill calculator that computes charges from configurable tariff blocks and lets users create custom tariff profiles.
  2. 02billwise-calculator0★5 mo—hobbyWeb calculator that estimates electricity bills across multiple Indian states using current tariff slabs, requiring no login and performing all calculations locally.
  3. 03CALCULA CON NOSOTROS TU AHORRO0★unknownliveWeb calculator that estimates potential cost savings from switching to renewable energy for homeowners.
  4. 04AI Water + Energy Calculator0★unknownliveai-builtAI calculator that estimates household water and energy usage from user inputs.
  5. 05GREE | Kalkulator doboru pompy ciepła0★unknownliveOnline calculator that helps determine the optimal power and type of heat pump for a specific building based on entered data.
  6. 06Electricity Cost Calculator0★unknownliveai-builtCalculator that estimates electricity costs based on user inputs such as usage and rates.
  7. 07HEX Heating Cost Calculator | Energy Savings Calculator0★unknownliveWeb calculator that estimates home heating costs and compares energy prices to help users find bill savings.
  8. 08Effizienzklassen-Rechner | Wärmepumpen-Modernisierung0★unknownliveai-builthobbyEnergy efficiency calculator that estimates building efficiency gains and property value increase from heat pump modernization for homeowners.
  9. 09Solar Plus by STP - Solar Rooftop Calculator0★unknownliveai-builtcommercialWeb calculator that estimates rooftop solar potential, installation costs, and long-term savings for homeowners.
  10. 10UtilityScout ROI Calculator0★unknownliveai-builtcommercialInteractive web calculator that estimates five-year cost savings and ROI from three inputs for field teams evaluating a utility service.
  11. 11Solara0★unknownliveai-builtSolar savings calculator that estimates performance, self-sufficiency, and payback time for plug-and-play home solar systems.
  12. 12Strømpris-kalkulator | Sammenlign Norgespris og strømstøtte0★unknownliveai-builtEmbeddable calculator that estimates electricity cost savings from a national price plan versus standard subsidies using historical price data.
  13. 13Telge - Räkna ut din elnätskostnad0★unknownlivecommercialWeb calculator that estimates a household's electricity grid costs for customers of a Swedish energy network.
  14. 14Prismatch beregning - Finn besparelser for din bedrift0★unknownliveai-builtcommercialWeb calculator that estimates a company's potential savings on banking, insurance, energy, telecom, leasing, and accounting from revenue data.
  15. 15Dynamische Tarife - Tarifrechner0★unknownliveWeb calculator that estimates potential savings from switching to dynamic electricity tariffs.
  16. 16Economize até 55% na sua conta de luz | Desconto Lei 14.300/20220★unknownliveai-builtWeb calculator that estimates household electricity bill savings available under a renewable energy discount regulation.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.