2 guides

Commercial Guides

Every commercial guide from the SMS engineering team — practical, factual, and from the people who fit the systems.

2026-09-27· 6 min read

Does commercial solar qualify for full expensing? The answer most quotes get wrong

Full expensing applies to main-pool plant. Solar PV is special-rate expenditure, which puts it outside that regime entirely — here is the allowance that actually applies, and why the distinction is worth money at your return.

2026-09-27· 5 min read

Commercial solar O&M: what actually fails, and in what order

O&M budgets get set as a round number per year. They are better set against the real failure curve — because the components do not fail at the same rate, and the expensive one is entirely predictable.

Where to go next

On the agricultural side, agricultural solar.
On commercial systems, commercial solar maintenance.
On the commercial side, solar for business premises.
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