Solar - Year Two in Review

Published on: 2025-04-18 17:05:00 by Steve Scott

1 min read

System Design

3.95kw array, south west facing, located in Surrey UK
9.5kwh battery
GivEnergy G2 3.6kw Inverter

PV Production

MSC Prediction 3684 kWh
Real world production 3670 kWh

Grid

Grid Import 7001kWh, almost entirely during the 7.5p cheap window (Huge win), but it fell short on most days in Mid Nov - Mid Feb
Export 1929 kWh.

Financials

Ancillaries

Approx £15 extra made out of DFS payments (Much lower this year)

Bills

£250/month bill down to £65, still looking good for a 6-7 year payback.

Commentry

This year export rates were 15p rather than 4.1p in the summer, as I pay 7p for import, I've been importing overnight and exporting more during the day.

The system has continued to perform well, and Home Assistant / GivTCP do a great job of looking after it.

DFS payments have been a disappointment this year, reflecting better overall margins. The process is largely automated at this stage, so I'm happy to continue

Solar