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

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:

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:

Annual Electricity Reduction: 32% Less Grid Dependency

Beyond the monthly snapshot, these bills reveal estimated annual usage:

The household reduced grid electricity consumption by nearly 800 kWh over 12 months.

Breaking Down November Electricity Usage

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

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.