Home Battery Economics in Ireland

Should you buy a home battery? We modeled every day of wholesale electricity prices from 2018-2026, simulated optimal dispatch for 6 tariff plans, and compared 10 installer quotes to answer that question.

Analysis Pages

Each page explores a different dimension of home battery economics

Foundation

Installer Cost Comparison

10 real quotes from Irish installers. How much should you pay? Are you getting a good deal?

Battery range: EUR 260-800/kWh installed

Tariff Research

Verified rates for all major Irish suppliers. EV plans, night rates, peak rates — all cross-checked.

Best spread: 45.7c/kWh (Energia EV)

Analysis

Payback Calculator

Interactive tool: enter your battery size, solar, and tariff plan to see payback period, NPV, and IRR.

Dynamic Tariff Simulator

What would half-hourly dynamic pricing look like? Browse any day in our 7-year wholesale dataset as a simulated consumer rate.

Synthesis

Fleet Scale Impact

What happens when 100,000+ Irish homes have batteries? Does collective arbitrage compress the spread?

At 100k homes: 500 MW / 1 GWh virtual battery

Data sources: 75,000+ hourly SEM wholesale prices (Oct 2018 – Feb 2026), verified supplier tariffs (Feb 2026), 10 installer quotes (Sep 2025), SEAI grant data, ESB Networks charges. Dynamic tariff simulation assumes 2.5c/kWh supplier margin + 5.5c network + 0.1c PSO + 9% VAT, capped at 50c/kWh. See the full utility-scale BESS analysis for wholesale market context.