Field Notes
Writing from the roof, not the sales deck.
Design guides, incentive updates, and battery math from our engineering team.

Fundamentals
How Solar Panels Actually Work (Without the Marketing)
The photovoltaic effect in three paragraphs, then the four things that actually matter when you buy a panel.
Ines Marchetti · May 4, 2026 · 7 min read
Incentives
The 2026 Solar Incentives Guide
Federal ITC is still 30%. Here's what's changed at the state and utility level — and what to file before December 31.
Rafael Ostrom · 9 min
Batteries
Choosing Battery Storage: LFP vs NMC, Sized vs Whole-Home
Two chemistries, three sizing strategies, and one honest recommendation for most households.
Ines Marchetti · 11 min
Design
Roof Orientation, Shade, and Why It Matters Less Than You Think
South-facing is best. North-facing still works. Here's the actual production penalty by orientation.
Elena Vardanyan · 6 min
EV
Charging Your EV From Rooftop Solar, End to End
The math on charging exclusively from excess PV production — and when it's worth the extra hardware.
Rafael Ostrom · 8 min
Commercial
Commercial Solar: PPA vs Own vs Lease in 2026
Three financing structures, three different balance-sheet stories. Here's how CFOs are choosing.
Denny Ostrowski · 10 min