Connecticut solar calculator

Live production from NLR (formerly NREL) PVWatts V8. Connecticut runs the Residential Renewable Energy Solutions (RRES) program with TWO mutually exclusive tariffs — choice locked 20 years at interconnection. Netting Tariff (default): self and export both at full retail (~$0.29/kWh), credits roll indefinitely, minus the Solar Energy Adjustment (SEA) of $0.0402/kWh on ALL production for 2026 enrollees, locked 20 yr. Buy-All Tariff: $0.3289/kWh paid on all production for 20 yr, self-consumption does not apply (you buy all consumption back at retail). SEA applies under both tariffs (skeleton; sources stronger on Netting). After year 20 both revert to whatever tariff exists then — calculator conservatively continues plain retail NM in years 21-25. Federal credit $0 (§25D repealed). State income credit: none. Sales tax exempt (6.35%, saves about $1,662). Property tax exempt indefinitely. Battery (Netting path only): Energy Storage Solutions upfront $250/kWh capped $16,000 + annual performance $300/kW × 10 yr. Defaults: south-facing roof mount, 20° tilt, 14% losses.

Connecticut has two RRES tariffs — pick ONE

Choice is locked 20 years at interconnection. You cannot combine them, switch later, or stack them.

Netting Tariff (default — most homeowners)
Self-consumption AND exports both credit at full retail (~$0.29/kWh). Credits roll indefinitely. Minus the Solar Energy Adjustment (SEA) of $0.0402/kWh on ALL production, locked 20 years. Battery (ESS) eligible.Buy-All Tariff
All production sold at $0.3289/kWh for 20 years, locked at enrollment. Self-consumption does not apply (you buy your consumption back at retail). SEA $0.0402/kWh applies here too (skeleton; sources stronger on Netting). Mostly used by lease/PPA structures. After year 20, system reverts to whatever tariff exists then — post-2046 not guaranteed.

Try (Hartford), (New Haven), (Bridgeport) — any valid US ZIP for this state also works.