Do Solar Panels Work in Winter? Real Bills from November Show the Truth
Real Utility Warehouse bills from the same household, November 2022 against November 2023, showing a 35% lower bill in the darkest month of the year.
Weymouth, Dorset • Residential
lower November bill
35%
less daytime grid electricity
45%
less grid electricity over 12 months
32%
The savings and payback figures in this case study are this customer's actual results. Your own savings will be specific to your installation and depend on your energy generation and usage, and on energy costs at the time of installation.
Property Details
- Property Type
- Residential
- Location
- Weymouth, Dorset
Services Installed
The Bottom Line: Winter Solar Panel Savings
November bill down 35%. Even in November, with short days, low sun angles, and typical UK weather, solar panels delivered measurable savings. Here are the Utility Warehouse bills from the same household:
| Metric | November 2022 | November 2023 |
|---|---|---|
| Solar Panels? | NO | YES |
| Monthly Bill | £81.75 | £53.37 |
| Electricity Usage | 210 kWh | 167 kWh |
| Daily Average | 7.0 kWh/day | 5.6 kWh/day |
| Monthly Savings | — | £28.38 |
| Percentage Reduction | — | 35% |
| Account Credit | -£195.23 | -£578.94 |
Why Winter Solar Panel Performance Matters
Many people assume solar panels are only worthwhile in summer. These November bills prove otherwise:
- It represents worst-case scenarios: If solar panels save money in November, they'll save even more the rest of the year
- Winter is when energy bills spike: Longer nights mean more heating, lighting, and appliance use
- Every kWh counts: Even modest solar generation offsets the most expensive grid electricity
- Credit balance builds year-round: Notice how the credit balance nearly tripled from -£195 to -£579 after one year with solar
Annual Electricity Reduction: 32% Less Grid Dependency
Beyond the monthly snapshot, these bills reveal estimated annual usage:
| 12-Month Period | Annual Usage |
|---|---|
| Nov 2021 - Nov 2022 (no solar) | 2,511 kWh |
| Nov 2022 - Nov 2023 (with solar) | 1,715 kWh |
| Reduction from Grid | 796 kWh (32%) |
Breaking Down November Electricity Usage
| Usage Type | Nov 2022 | Nov 2023 |
|---|---|---|
| Day Rate Usage | 169 kWh | 93 kWh |
| Night Rate Usage | 41 kWh | 74 kWh |
| Total Monthly Usage | 210 kWh | 167 kWh |
| Day Rate Reduction | — | ↓ 76 kWh (45%) |
How Solar Panels Reduced November Electricity Costs
| Cost Component | Change |
|---|---|
| Electricity Usage Charges | £74.83 → £41.05 (saved £33.78) |
| Standing Charge | £6.92 → £12.32 (cost +£5.40) |
| Net Monthly Savings | £28.38 |
Building Financial Buffer: Credit Balance Growth
- November 2022 (before solar): -£195.23 in credit
- November 2023 (after solar): -£578.94 in credit
The credit balance grew by £383.71 over the year. This means that despite paying monthly bills, the household accumulated an additional £383 in credit, essentially a buffer against future energy costs.
Do Solar Panels Work in Winter? The Evidence Says Yes
Key findings:
- November bill reduced by 35% (£81.75 to £53.37)
- Monthly winter savings: £28.38
- Daytime electricity reduced by 45%
- Annual grid dependency reduced by 796 kWh (32%)
- Credit balance grew by £383.71 over one year
The evidence is clear: solar panels work in winter. While they generate more electricity in summer months, even November, with its short days and frequent cloud cover, delivers substantial savings.
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