
Solar
22 APRAda Lovelace
Residential solar in 2026
Why rooftop solar has reached parity in most US states.
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Why rooftop solar has reached parity in most US states.

LFP vs NMC vs sodium-ion - what matters for home storage.

Demand response and VPPs are doing more work than new wires.

A roundup of IRA follow-ups and state-level incentives.

Field notes from fifty retrofits: what to check before you quote.