Do Solar Panels Work in Winter? Real Bills from November Show the Truth | CRG Direct Case Studies
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Do Solar Panels Work in Winter? Real Bills from November Show the Truth

Do Solar Panels Work in Winter? Real Bills from November Show the Truth

Actual Scottish and Southern Energy bills from the same household — November 2022 (before solar) and November 2023 (after solar) — show 35% savings even in the darkest month.

Hampshire • Residential

Annual Savings

£470

Bill Reduction

35%

CO₂ Saved

750 kg

Impact

Major

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.

" Even in the middle of November, we saved over £28 on our bill. The credit balance just keeps growing. "

Property Details

Property Type
Residential
Location
Hampshire

Services Installed

Solar

The Bottom Line: Winter Solar Panel Savings

Even in November — with short days, low sun angles, and typical UK weather — solar panels delivered measurable savings. Here's what the bills reveal:

MetricNovember 2022November 2023
Solar Panels?NOYES
Monthly Bill£81.75£53.37
Electricity Usage210 kWh167 kWh
Daily Average7.0 kWh/day5.6 kWh/day
Monthly Savings—£28.38
Percentage Reduction—35%
Account Credit-£195.23-£578.94
Even in the depths of winter, solar panels reduced this household's electricity bill by 35%, saving £28.38 in November alone. That's £340+ in annual savings just from winter months.

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 PeriodAnnual Usage
    Nov 2021 - Nov 2022 (no solar)2,511 kWh
    Nov 2022 - Nov 2023 (with solar)1,715 kWh
    Reduction from Grid796 kWh (32%)
    The household reduced grid electricity consumption by nearly 800 kWh over 12 months.

    Breaking Down November Electricity Usage

    Usage TypeNov 2022Nov 2023
    Day Rate Usage169 kWh93 kWh
    Night Rate Usage41 kWh74 kWh
    Total Monthly Usage210 kWh167 kWh
    Day Rate Reduction—↓ 76 kWh (45%)
    The most significant impact is on daytime electricity usage, which dropped by 45%. This makes sense — solar panels generate electricity during daylight hours, offsetting grid consumption when the sun is up.

    How Solar Panels Reduced November Electricity Costs

    Cost ComponentChange
    Electricity Usage Charges£74.83 → £41.05 (saved £33.78)
    Standing Charge£6.92 → £12.32 (cost +£5.40)
    Net Monthly Savings£28.38
    Solar panels saved £33.78 on electricity usage costs. While standing charges increased (these are set by energy suppliers and vary over time), the net result was still substantial monthly savings.

    Winter Savings Multiply: Annual Impact

    Conservative estimate (based on November performance):

    • Winter months (6 months): £28.38 × 6 = £170.28
    • Summer months (6 months, higher savings): £50 × 6 = £300
    • Projected annual savings: £470.28

      • This is a conservative projection. Summer months typically deliver 2-3x more solar generation than winter, so actual annual savings could easily exceed £600-£800.

      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
    • Projected annual savings: £470+ (conservative estimate)

    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.

    Financial Summary

    Previous Annual Bill

    £981

    Reduction

    35%

    New Annual Bill

    £640

    Annual Savings

    £470

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