Suitability · Business energy
Is on-site solar suitable for a business premises?
Last updated 25 October 2026 · 2 sources listed · Reading time about 3 minutes
Short answer
Suitability depends on daytime load, roof or land availability, tenure and lease terms, grid connection limits, planning rules and the ownership model, whether purchase, lease or power purchase agreement. Businesses that consume most energy during daylight benefit most from self-consumption. Rules, incentives and tax treatment vary by country, so consult your energy agency and an adviser.
Who this is for: A business owner or facilities manager weighing rooftop solar for owned or leased premises.
What to evaluate
Daytime consumption
Self-consumed energy usually matters more than exported surplus.
How to check: Compare interval data against typical solar generation hours.
Tenure and lease
A short lease or lack of landlord consent can block installation.
How to check: Review the lease and discuss with the landlord. Ask the network operator early about connection limits and export restrictions, since a site on a constrained part of the network may be asked to limit output or fund reinforcement.
Roof condition and structure
Roof replacement during the system life adds cost.
How to check: Obtain a structural and condition assessment.
Grid connection
Network operators may limit export or require studies.
How to check: Ask the operator about capacity and approvals.
Ownership model
Buying, leasing and power purchase agreements allocate risk and benefit differently.
How to check: Compare contract terms, including performance guarantees and buyout.
Insurance and maintenance
Operations and cleaning affect performance and risk.
How to check: Check insurer requirements and maintenance responsibilities.
Comparison
| Model | Good when | Watch out for |
|---|---|---|
| Outright purchase | Business has capital and owns the roof | Capital tied up and maintenance duty |
| Lease | Capital is limited | Long commitments and escalators |
| Power purchase agreement | Provider owns system and sells power | Contract length and exit terms |
| Community or shared scheme | Roof is unsuitable | Limited control and availability |
Decision worksheet
Rate up to three options against this guide’s own criteria. It runs in your browser and saves only on this device. It is a thinking aid, not a recommendation.
1. Have you checked each criterion?
0 of 6 criteria checked.
2. Compare options (0 = fails or unknown, 3 = meets it well)
| Criterion | |||
|---|---|---|---|
| Daytime consumption | |||
| Tenure and lease | |||
| Roof condition and structure | |||
| Grid connection | |||
| Ownership model | |||
| Insurance and maintenance | |||
| Total (max 18) | 0 | 0 | 0 |
Questions to ask before you commit
- How much of the output would be consumed on site?
- What does the lease permit?
- What is the roof's remaining life?
- What approvals does the network operator require?
- Who owns the system and who maintains it?
- What performance guarantees apply?
- What happens if we move or sell?
- How is the system insured?
Typical trade-offs
Buy the system
- Upside
- Full ownership of benefits
- Downside
- Capital and risk
Use a PPA
- Upside
- Low upfront burden
- Downside
- Long contract and less control
Wait
- Upside
- More information and options
- Downside
- Forgone savings
Common mistakes
- Ignoring lease consent. Examine the structural condition and remaining life of the roof before proposals are compared, because removing and refitting panels for a roof repair adds disruption and cost that early quotes often leave out.
- Sizing for exports rather than on-site use. Compare at least two proposals using the same assumptions about load, degradation and maintenance, so that differences reflect the offers rather than the modelling.
- Skipping a roof assessment.
- Not reading buyout and escalation clauses in PPAs.
- Forgetting to notify the insurer.
Related questions
Is solar better for a business that operates in the evening?
Less so, because generation occurs in daytime, so a business whose load is mostly evening or night will export much of the output or need storage to shift it. Storage can move some output into the evening, though it adds cost and complexity. Evaluate your load profile and consider whether daytime operations or storage make sense. An installer should model self-consumption using your interval data rather than average assumptions.
What is a power purchase agreement?
A provider installs and owns the system on your premises and sells you the electricity under a long-term contract. It reduces upfront outlay but locks in terms. Examine price mechanisms, term, performance, maintenance and what happens at the end or on sale of the building.
Can tenants install solar?
Yes, with landlord consent and appropriate lease terms. The key questions are who owns the system, who bears roof repair and insurance risks, and what happens to the equipment when the lease ends or the roof needs replacing. A lease with a short remaining term may make payback hard to justify. Negotiate clear written terms covering access, removal and compensation, and consult a legal adviser before signing anything.
Are there tax or support benefits?
Many jurisdictions offer depreciation allowances, tax credits, grants or favourable export arrangements for business solar, but the details vary by country and region, and schemes are altered or withdrawn over time. Eligibility often depends on equipment standards and installer registration. Consult your national energy agency and a tax adviser for what applies where you operate, and confirm that any incentive is still open before relying on it in a financial model.
Sources and further reading
These pages were reachable when we last checked. They informed definitions and rules referred to above; they do not endorse this guide. Where rules differ by country, check the authority for your location.
- Solar Energy Technologies Office — U.S. Department of Energy, retrieved 27 October 2026
- Solar Energy — U.S. Department of Energy, retrieved 27 October 2026
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