Off-Grid Solar Installation Contract Template
For Standalone Solar Systems with No Grid Connection
Built specifically for solar professionals working on off-grid projects, this contract template is designed to set clear expectations, reduce the risk of misunderstandings, and protect your business when installing independent solar PV systems with battery storage.
Written with input from solar installers and reviewed for legal clarity, it addresses the common challenges and customer assumptions that come with off-grid setups — especially when energy supply and usage must be carefully managed.
What This Contract Helps With:
✔️ Explains Off-Grid Limitations Upfront
Gives clients a clear picture of what to expect, including seasonal differences, generator reliance in winter, and energy autonomy limits — so you’re not blamed when the system performs exactly as designed.
✔️ Sets Clear Client Responsibilities
Includes easy-to-understand terms about load usage, energy monitoring, and system maintenance — helping prevent damage from misuse or “high draw” appliances.
✔️ Protects Against Scope Creep
With structured Change Orders and Scope of Works tracking, you stay protected when the project shifts or extras are requested mid-job.
✔️ Reduces Disputes and Misunderstandings
Covers backup generator usage, performance variation, and battery constraints — with disclaimers that clearly define your trade limits and the client’s role in managing the system properly.
✔️ Builds Confidence & Professionalism
Professional documentation shows clients you know what you’re doing — making it easier to charge what you're worth and avoid awkward conversations later.
✔️ Covers You from First Quote to Final Invoice
From outlining responsibilities and performance expectations at the start, to confirming system handover, customer sign-off, and payment terms at the end — this contract keeps everything clear and accounted for.
Example Terms & Conditions Highlights " Built from Trade Experience "
✔️ System design clause covering load profiling, seasonal variance, and inverter/battery oversizing where applicable.
✔️ Battery terms including BMS requirements, charge/discharge limitations, and warranty compliance conditions.
✔️ Generator integration terms (if applicable), with changeover methods and system compatibility responsibilities outlined.
✔️ Commissioning and handover terms, confirming system has been tested under load and parameters set according to spec.
✔️ Usage limitations clause stating that performance depends on consumption remaining within designed thresholds.
…and many more terms crafted from real-world off-grid installs to ensure clarity, protection, and long-term system performance.
When to Use This Template:
Any time you’re installing a solar system that isn’t connected to the grid — whether it’s a remote setup, a self-sufficient home, an off-site building, or a project where full energy independence is required.
This isn’t a generic solar contract.
It’s built from real-world, on-the-job experience by installers who understand the complexity of off-grid systems — with legally adjusted trade terms that help both you and your customer stay on the same page from start to finish.
✅ Instant download
✅ Easy to edit
✅ One-time payment of £25.99 — includes unlimited use and free updates for 18 months
This agreement follows the same standard applied across all our templates — clear, informative terms that are easy to read, with firm but fair conditions around payment, responsibilities, and legal protection.
It maintains a strong balance between being approachable for clients and professional enough to protect your business.
