Solar — building-integrated PV
55% Capacity 12 — 28 kWp
Roof, façade and canopy arrays tuned to orientation and shading.
Energy Systems
Net-positive. Off-grid capable. Carbon-negative in pilots.
Every Casa Nova home produces more energy than it consumes across a full year. The latest pilots store seasonal heat underground and export carbon-negative surplus to the local grid.
Energy mix · typical residence
Geothermal heat pump
25% Capacity 8 — 22 kW
Closed-loop ground source, with seasonal thermal storage under the garden.
Battery + flow storage
15% Capacity 40 — 120 kWh
Lithium-iron primary, vanadium-flow for long-duration resilience.
Grid (renewable PPA)
5% Capacity On-demand
Traded against live wholesale prices; never consumed at peak carbon intensity.
Storage
Energy you can keep — for weeks, not hours.
Conventional batteries die at three days. Casa Nova homes pair lithium-iron for daily cycles with vanadium-flow cells for multi-week resilience. Underground thermal stores carry seasonal heat across winter.
2019
First net-positive Casa Nova delivered
2021
Seasonal thermal storage patent filed
2023
Off-grid capability across all product lines
2024
Carbon-negative pilot in three climates