Hidden Costs of Solar Panels: What to Watch Out For

Costs That Should Be Included

A reputable installer will include:

• Site survey and system design
• All equipment (panels, inverter, mounting)
• Scaffolding (if needed)
• DNO notification and approval
• MCS certification
• 10-year workmanship warranty
• System commissioning and handover

If any of these are "extras" - question the quote.

Potential Hidden Costs

1. Roof Repairs (£200-£2,000)

Some installers refuse to work on damaged roofs. Get a roof survey first if your roof is old.

2. Consumer Unit Upgrade (£300-£800)

Older properties may need a new consumer unit to comply with regulations.

3. G99 Application Fee (£0-£500)

Systems over 3.68kW may require a G99 application. Most installers include this, but check.

4. Scaffolding Surcharge (£500-£1,500)

Complex roofs or difficult access may incur additional scaffolding costs.

5. Meter Change (£0-£150)

Smart meters are usually free, but some suppliers charge for meter changes.

6. Planning Permission (£206+)

Conservation areas or listed buildings require planning applications.

7. EMS Consent - WGC Only (£0-£200)

Welwyn Garden City requires Estate Management Scheme consent.

How to Avoid Hidden Costs

1. Get fixed-price quotes - reputable companies don't add extras

2. Ask specifically about scaffolding, DNO, and electrical work

3. Check the contract - read what's included and excluded

4. Get a roof survey if your roof is 20+ years old

5. Compare like-for-like - ensure quotes cover the same scope

Red Flags to Watch For

• Quotes that seem too good to be true
• Pressure to sign immediately
• Vague pricing or "subject to survey" quotes
• Requests for large deposits (over 25%)
• No MCS certification number provided