NET Power’s Patented Thermodynamic Cycle:

The Allam-Fetvedt Cycle
Learn How It Works & How It Compares To Traditional Natural Gas Power Plants

La Porte, Texas

50MWth Demonstration Facility

 

Our La Porte plant plant proves that NET Power can provide clean energy with zero emissions.

Commercially sold CO2 drives lower-cost, carbon-sequestering enhanced oil recovery, sour gas clean up, production of concrete and plastics…while subsidizing cheaper, clean electricity.

Intrigued? Watch this video to learn more about the 50MWth Demonstration Facility.

The 5 Main Advantages Of The Allam-Fetvedt Cycle

01 – ZERO EMISSIONS
02

Lower
Power Costs

Since the Allam-Fetvedt Cycle uses CO2 instead of steam to drive its turbine, the efficiency and life spans of NET Power plants are better than natural gas power plants. This also lowers construction costs, since Allam-Fetvedt Cycle plants are small in size.
03

Complement To
Renewables

With the ramping flexibility of a natural gas “peaker” plants, NET Power is the perfect zero-emission complement for intermittent renewable energy.
04

Cleaner, Cheaper
Energy Storage

Storing energy is always a tradeoff. NET Power can integrate oxygen to the effect of creating a 30-65 MW battery capable of up to 4 days of grid output at one-tenth the cost of the most advanced, but potentially environmentally-harming industrial batteries.
05

Cheapest Carbon
Capture

Converting natural and renewable gases into clean and efficient power through our system unlocks a way to capture clean, industrially useful CO2 enabling a new economy around CO2 as a valuable industrial product rather than emitting greenhouse gas.
Carbon capture should be inherent and CO2 too valuable to waste.

NET Power vs the Traditional Natural Gas Power Plant

NET Power Plant

The Allam-Fetvedt Cycle

Traditional Natural Gas Power Plant

Combined Cycle Gas Turbine Plant
Natural gas is burned with pure oxygen.

This creates CO2 that is sent through the rest of the cycle. New CO2 is captured and the remaining is recycled – nothing is released into the atmosphere.

Natural gas is burned in air.

This creates NOX emissions, and the resulting CO2 is sent into the atmosphere unless it is cleaned by expensive post-combustion carbon capture.

The cycle reuses CO2 over and over again, which helps efficiency and makes the cost of electricity lower.
The cycle doesn’t maintain custody of its CO2, and burns natural gas in the presence of atmospheric gases, which results in emissions.
Excess CO2 that’s created through the cycle is pipeline & commercially-ready to be sold to crucial industries (e.g. oil recovery, industrial and agricultural feedstock) – this enhances the value of the power plant.
The byproducts of this cycle are toxic to the environment and add to the globe’s rising temperatures. The only positive byproduct is electricity.

NET Power vs the Traditional Natural Gas Power Plant

NET Power Plant

The Allam-Fetvedt Cycle
Natural gas is burned with pure oxygen.

This creates CO2 that is sent through the rest of the cycle. New CO2 is captured and the remaining is recycled – nothing is released into the atmosphere.

The cycle reuses CO2 over and over again, which helps efficiency and makes the cost of electricity lower.
Excess CO2 that’s created through the cycle is pipeline & commercially-ready to be sold to crucial industries (e.g. oil recovery, industrial and agricultural feedstock) – this enhances the value of the power plant.

Traditional Natural Gas Power Plant

Combined Cycle Gas Turbine Plant
Natural gas is burned in air.

This creates NOX emissions, and the resulting CO2 is sent into the atmosphere unless it is cleaned by expensive post-combustion carbon capture.

The cycle doesn’t maintain custody of its CO2, and burns natural gas in the presence of atmospheric gases, which results in emissions.
The byproducts of this cycle are toxic to the environment and add to the globe’s rising temperatures. The only positive byproduct is electricity.

The 4 Steps To Cleaner Energy:
How The Allam-Fetvedt Cycle Works

 

The Allam-Fetvedt Cycle is pretty simple.

It burns natural gas with pure oxygen, and the resulting CO2 is sent through the combustor, turbine, heat exchanger, and compressor, altogether creating low-cost energy. Extra CO2 that’s produced is pipeline ready and sold to industries who need it, such as the medical, agricultural, and industrial sectors. It can also be cheaply sequestered.

Here’s a more thorough break-down of the process:

Step #1: The Burn

Oxy combustion is the process of burning natural gas with pure oxygen (instead of air).

When air is used as the primary oxidant, nitrogen oxides (NOX) are released into the atmosphere. This isn’t only bad for the environment – it’s also less efficient. When pure oxygen is the primary oxidant, fuel consumption is reduced, and flame temperatures are increased, adding efficiency.

Step #2: The Expansion & Cooldown

The high-pressure COmoves along into the turbine, where it expands and goes into the heat exchanger. Any water is removed, and the remaining CO2 is compressed and pumped back into high-pressure

Step #3: Reuse & Recycle

Most of the high-pressure CO2 is reheated in the heat exchanger and returned to the combustor, where the whole cycle begins again.

Step #4: Piping

The excess CO2 that comes from step #2 is pipeline ready. It’s inherently captured, not released into the atmosphere, and can be sold to industries who need it or simply sequestered.

This step increases Allam-Fetvedt Cycle Power Plant’s overall financial value by providing a valuable byproduct and eliminating any carbon-related liabilities.

Altogether, these 4 steps boast:

Low-cost energy
Low water use
Zero air emissions