STEGS™ · Solar thermal energy generation and storage

Always on.
Always clean.™

A solar thermal plant. Captures heat by day. Stores it 48 hours. Dispatches firm electricity around the clock. No batteries. No fuel.

See how STEGS™ works →
CEMEX HDR University of Houston Currie & Brown DPR Construction Baikery Studio
CEMEX HDR University of Houston Currie & Brown DPR Construction Baikery Studio
The problem

Solar only works when the sun shines.

Demand is doubling by 2050. Gas generation is meeting the shortfall renewables cannot supply. No commercial technology delivers clean firm power 24/7.

20,000GW Global capacity gap by 2050.
200GW US data center load by 2034.
900GW Gas capacity retiring by 2050.
24/7 Baseload unmet by renewables.

IEA World Energy Outlook · EIA Energy Outlook (Jan 2025)

STEGS™ · Solar thermal energy generation and storage

Capture. Store. Dispatch.

Proprietary solar collectors capture solar energy and efficiently convert it to heat to charge a proprietary concrete thermal block. Stored heat drives an ORC turbine on demand. Firm power, day and night.

How STEGS™ works: collect, store, dispatch TURBINE GENERATOR POWER
01 · Collect

Solar Collector

Proprietary flat-panel solar collectors capture the full solar spectrum, converting it to thermal energy.

02 · Store

Thermal Block

Heat stored in proprietary concrete thermal block. Modular and expandable. Stable through repeated thermal cycling.

03 · Dispatch

Power Unit

Stored heat drives a commercial ORC turbine generator. Firm electricity 24/7.

Performance

Firm dispatch. No fuel. No batteries.

Designed to deliver electricity reliably and sustainably. A clean alternative for retiring generation and unprecedented new demand.

Annual capacity factor >90%

Provides 24/7 generation. Thermodynamically modelled with proprietary AI-integrated model. Patent-pending system.

Storage duration 48+ hr

Material validated 2025. System validation 2026 lab tests.

Asset life 40+ yr

vs. 25 years for utility-scale PV.

Fuel cost $0

Zero fuel cost. No combustion.

STEGS™ thermal storage block: 20× cheaper per MWh than lithium-ion batteries, with 5× the life expectancy.

AI-integrated thermodynamic model validated. Commercial demonstration 2027/2028.

Position

Firm. Clean. Dispatchable. At scale.

STEGS™ is the first commercially viable firm renewable baseload platform.

Metric
STEGS™
Gas CC
PV + Storage
Wind + Storage
Firm 24/7 dispatch
100% renewable
No fuel cost exposure
No rare earths
Cost-advantage

Qualitative comparison of leading power generation options.

Markets

Built for the loads that never turn off.

STEGS™ deploys across the 8,000 km solar belt. 75% of the world's population. 80%+ of global power consumption. 1.7 million MW of new US capacity over the next decade, 4.5 million MW international.

STEGS collector array · data centre deployment
01

Data centers

200,000 MW of new generation needed in the US over the next decade.

EIA Annual Energy Outlook (Jan 2025).

First project · Waco, Texas

Pilot. Commercial. Utility.

A 105 MW data-center site in Waco, Texas. Phase 1 commercial demonstration. Phase 2 expansion on the same location.

Phase 1 · Commercial Demonstration

15 MW

Annual production
>120,000 MWh
Annual revenue
$7.2M
Annual OPEX
$1.7M
Operation
2028
Phase 2 · Waco Build-out

90 MW

Annual production
>725,000 MWh
Payback
4 years
Future · Utility

100+ MW

Configuration
Modular expansion
Storage
48+ hr
Plant scale
1 MW – 100s MW
Markets
International, post-2030
Deployment
Global solar belt
2035 target
6,500+ MW

Figures from internal modelling. PPA under active negotiation. Ranges quoted before escalators, renewable attributes, and tax benefits.

Roadmap

Global rollout roadmap.

2025

Technology validation

Thermal storage tested at 400 °C with CEMEX. System design finalized.

2026

Patent + lab testing

Patent application filed January. Collector and storage cycled by independent labs (Apr–Aug). PPA in negotiation.

2027

Phase 1 build

15 MW commercial demonstration breaks ground. HDR engineering. DPR construction. Texas.

2028

Commercial dispatch

Phase 1 online. Phase 2 (90 MW) under construction on same site.

2030+

Global rollout

1,000+ MW in construction or operation by 2030. 6,500+ MW global by 2035.

Get in touch

Power your next facility with STEGS™.

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