EcoFlow DELTA Pro Ultra (6.1kWh / 7200W Whole-Home TOU Arbitrage System) — United Kingdom (England, Scotland & Wales) ROI & Legal Compliance Calculator

As of August 27, 2026, UK SI 2026/848 officially legalizes 800W plug-in solar kits into a standard 3-pin BS 1363 socket across Great Britain when using ENA Type Test registered equipment.

Interactive 2026 Engineering Tool

Plug-in / Balcony Solar ROI & Self-Consumption Calculator

UK Statutory Instrument SI 2026/848 + ENA Type Test Register (G98)

Solar Array Wattage (W) — Legal Limit: 800W

400W7200 W1,600W

Electricity Rate (£/kWh Peak/Daytime)

Daily Peak Sun Hours (United Kingdom (England, Scotland & Wales) Avg: 3.5 hrs)

Direct Self-Consumption % (With LFP Battery = 92%, Without Battery = 55%)

35% (No Battery)92%98% (With Smart Battery)

Complete Kit Cost (£)

Verified Yield & Payback Output

Annual Solar Output

1,380 kWh

Annual Bill Savings

£510/yr

Simple Payback Period

2.5 Years

10-Year Net Profit

£3,800

United Kingdom (England, Scotland & Wales) Legal Verdict: Officially Legalized Aug 27, 2026 (SI 2026/848 — Up to 800W). As of August 27, 2026, UK SI 2026/848 officially legalizes 800W plug-in solar kits into a standard 3-pin BS 1363 socket across Great Britain when using ENA Type Test registered equipment.

EcoFlow £4499

EcoFlow DELTA Pro Ultra (6.1kWh / 7200W Whole-Home TOU Arbitrage System)

✓7.2kW continuous 240V output
✓Automated NEM 3.0 & PG&E TOU optimization
✓0ms UPS switchover

Check Price & Specs at EcoFlow →

Anker SOLIX £1099

Anker SOLIX Solarbank 2 E1600 Pro (800W/1200W Plug-in + 1.6kWh LFP)

✓Built-in 800W microinverter (expandable)
✓1.6kWh LiFePO4 battery (up to 9.6kWh)
✓Zero-export smart meter included

Check Price & Specs at Anker SOLIX →