H-Home 60 NG
ThermaVolt™ PVT • Thermal • Battery • Hydrogen Reserve
Designed for an Indianapolis test home, H-Home 60 NG combines ThermaVolt™ PVT solar, battery storage and hydrogen reserve while retaining an existing serviceable natural-gas furnace. The goal: lower first cost, resilient electricity and useful recovered heat without paying to replace a working heating system.
ENERGY
SYSTEM
Keep the Furnace. Add a Smarter Energy System.
H-Home 60 NG combines solar electricity, battery storage, hydrogen reserve and recovered thermal energy while retaining the existing serviceable natural-gas furnace for Indianapolis winter space heating.
LOWER CAPITAL COST
Retaining the existing furnace removes the large hydronic heat-pump package and helps move the concept toward a ~$60,000 installed-product objective.
SOLAR FIRST
ThermaVolt™ PVT electricity serves house loads first, then charges the battery; surplus energy can produce hydrogen for long-duration reserve.
HYDROGEN FOR RESILIENCE
Hydrogen is not forced to cycle every night. It is reserved for extended outages and low-solar periods, where long-duration storage adds the most value.
USE THE HEAT
ThermaVolt™ PVT backside heat plus electrolyzer/fuel-cell recoverable heat can preheat domestic hot water through a compact thermal buffer.
BATTERY FOR DAILY CYCLING
A 15–20 kWh LFP battery handles normal overnight loads, fast transients and black-start functions efficiently.
GAS HEAT STAYS AVAILABLE
The existing natural-gas furnace continues to cover Indianapolis winter space heating, avoiding a costly HVAC conversion.
PRELIMINARY H-HOME 60 NG PACKAGE
A Hybrid Home Energy Platform
The preliminary package combines ThermaVolt™ PVT generation, daily battery storage, hydrogen production and reserve, fuel-cell recovery, thermal buffering and retained natural-gas space heating.
| Subsystem | Preliminary Target | Role |
|---|---|---|
| ThermaVolt™ PVT array | 14–16 kW | House electricity + recoverable thermal energy |
| LFP battery | 15–20 kWh | Daily cycling, transient loads, black start |
| PEM electrolyzer | 2–3 kW target | Converts surplus renewable electricity to H₂ |
| Hydrogen reserve | ~2 kg usable target | Long-duration / extended-outage energy reserve |
| PEM fuel cell | 2–3 kW target | Converts stored H₂ back to electricity |
| Thermal buffer | 80–120 gal | DHW preheat / recovered-heat utilization |
| Space heating | Existing NG furnace | Retained as primary Indianapolis winter heat |
| Controls | MTD Dashboard | Dispatch, metering, alarms and energy management |
HOW ENERGY MOVES
The H-Home 60 NG concept separates daily energy cycling from long-duration reserve while keeping the existing furnace available for winter space heating.
ThermaVolt™ PVT
powers home
BATTERY
stores daily energy
H₂
stores surplus long-term
FUEL CELL
restores power
NG FURNACE
heats home
INDIANAPOLIS ECONOMIC LOGIC
Targeting an installed-product objective subject to site, permits, final OEM pricing and design.
| Planning Point | Preliminary Result |
|---|---|
| Representative annual space-heating gas use | ~575–580 therms/year planning basis |
| Representative annual space-heating gas cost | ~$640/year planning estimate |
| Avoided heat-pump/hydronic capital | ~$14,500–$18,500 preliminary |
| H-Home 60 NG equipment objective | ~$40,000–$44,000 preliminary |
| Installed product objective | Targeting ~$60,000, subject to site, permits, final OEM pricing and design |
PRELIMINARY PRODUCT CONCEPT
Final system sizing requires site-specific electrical load data, roof/solar review, existing furnace condition, DHW demand, code/AHJ review, and final vendor quotations. Hydrogen production, storage, ventilation, detection and pressure equipment must use certified components and code-compliant installation. ThermaVolt™ PVT thermal performance values remain subject to final product data and project conditions.
KEEP YOUR NATURAL-GAS HEAT. ADD A SMARTER HOME ENERGY SYSTEM.
ThermaVolt™ PVT • Thermal • Battery • Hydrogen Reserve
Final system sizing requires site-specific electrical load data, roof/solar review, existing furnace condition, DHW demand, code/AHJ review, and final vendor quotations. Hydrogen production, storage, ventilation, detection and pressure equipment must use certified components and code-compliant installation. ThermaVolt™ PVT thermal performance values remain subject to final product data and project conditions.