Section 1
Key Performance Indicators
Heating Bill Reduction
€2,100 / yr
Based on G → B2 Upgrade
Estimated annual fuel savings when following recommended fabric-first insulation + heat pump roadmap.
Carbon Tax Impact (2026–2030)
+€480
Cumulative Avoided Tax
Projected cumulative Irish carbon tax liability saved over 5 years by executing a deep retrofit shield.
BER Jump Cost Efficiency
Attic €1.20
🏆 ROI Leader (/m²·yr saved)
Pumped Cavity €1.80/m²·yr • Heat Pump €4.50/kWh·yr • Solar PV €2,100 net cost ≈ €750/yr offset.
ROI Highlights (Payback)
Solar PV (3.8 yrs) 90%
Attic Insulation (4.2 yrs) 82%
Cavity Wall (5.5 yrs) 68%
Heat Pump (8.1 yrs) 45%
Section 2
Agent Decision Formulas
1
Net Out-of-Pocket Cost Formula
NetCost = TotalContractCost - SEAI_Grants(Measures) - TaxCredits(Year)
Explainer: The AI Agent calculates your net investment by deducting eligible SEAI grant caps (e.g. €1,500 attic, €1,700 cavity wall, €6,500 heat pump, €2,100 solar PV) plus applicable Home Renovation Incentive or green tax relief from the gross installer quote.
2
Annual Energy Savings Formula & Interactive Simulator
AnnualSavings = FloorArea_m2 * (BER_Baseline_kWh - BER_Target_kWh) * FuelTariff_Euro_kWh
Projected Annual Savings:
Based on upgrading G-rating to B-rating (Simplified May 2026 BER Scale)
€2,160 / yr
3
Simple Payback Calculator
PaybackYears = NetCost / AnnualSavings
Simple Payback Period:
🚀 High Efficiency ROI
4.0 Years