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Is Solar Worth It in 2026? The Net-Billing Answer

Yes — for a home that uses its own sunshine. No — for a home buying panels as a tiny power station. February 2026 changed which of those you are, and most of the advice still circulating answers the old question.

The one test that decides it

Under net billing, a unit you generate and use is worth the retail bill it removes — Rs 33 to Rs 60 or more, all-in. A unit you export earns Rs 8.13. So the question is not how much sun your roof gets; it is how much of the production your household can consume between sunrise and sunset. A home with daytime occupants, daytime AC, a daytime pump — a self-consumption share of 55% or better — pays a 5 kW system back in roughly three to five years. A home empty until evening exports most of its production at the low rate and can wait twice as long. The payback calculator runs your own share; moving that one input shows you your real answer.

Sizing: cover the day, not the bill

The old instinct — size to the total monthly units — now overshoots: production beyond daytime use earns the export rate. The sizing rule under net billing is to cover the daytime base load well and the total load approximately: monthly units ÷ ~120 units per kW per month, then sanity-check the result against your daytime habits, and never above your sanctioned load (the regulations cap the system there anyway). Storage changes the arithmetic again — a battery moves evening consumption into the self-consumed column — but at current battery prices it is a resilience purchase first and a payback purchase second.

The costs nobody prints

Panels degrade slowly and inverters are a mid-life replacement, not a lifetime part. Net-billing agreements run five years, renewable for five more — the rules at your renewal are the rules then in force, as existing owners learned this year. And if you already own a grandfathered system, modifying it can void your old terms — read the regime guide before adding a single panel.

The verdict

Worth it, in 2026, for: homes with bills above roughly Rs 15,000, real daytime load, and a roof that will hold the system for a decade. Not yet, for: homes empty all day with small bills — for them, the cheaper win is usually load timing and the slab cliffs (start with the appliance loads and the cliff guide), and solar when the household's pattern changes. Anyone who gives you a verdict without asking about your daytime usage is selling, not advising.