Converting Waste into Energy

Storage Assets

Les Lange

CEO, Sizana Solutions, South Africa

OUTLOOK ON THE ENERGY

STORAGE MARKET

Key points:

• Energy storage requirement

increasing exponentially

• 15 years expected growth 6000%

• $103 Billion will be invested

Drivers:

• RE requires storage

• Legislation which promote

emission reductions

“The industry has just begun”

Yayoi Sekine, energy storage analyst

UTILITY ENERGY STORAGE

Pumped Storage

• 96% of current utility storage

• Topology limits opportunities

• Expensive and risky to develop

• Large environmental impact

• Inefficient

Emulate pumped storage, but

• Is more efficient

• Costs less

• Can be done on a smaller scale

• Improves the environment

• Can be built anywhere

ENERGY VAULT STORAGE

Charge Store Discharge

One 35 MWh tower = 8600 bricks = 301 000 tonnes

35 TONNE BRICK

High-performance concrete

High-performance concrete

Internal structure

Steel plate for lifting

Recycled waste

CONVERT COAL POWER

STATION TO RE BASE LOAD

•RE plus energy storage

equals base load

•Convert buildings and

ash dumps into bricks

•Clean environment

•Cost savings with

rehabilitation

•Other infrastructure

in place

CONVERT ASH DUMPS INTO

ENERGY STORAGE ASSETS

• Rehabilitate environment

• Energy storage for peak load

management

• Eskom needs to increase

energy storage

• Included in IRP to increase

energy storage

• Other infrastructure in place

• Many abandoned mines

• Mine dumps are health

and environmental

hazards

• Rehabilitate environment

• Energy cost savings

• Backup power

• Other infrastructure in

place

CONVERT MINE DUMPS

INTO ENERGY STORAGE

CONVERT CITY RUBBLE

INTO ENERGY STORAGE

• Rehabilitate

environment

• Backup power

• Energy cost savings

• Reduce effect of load

shedding

• 100 MW Level 1 load

shedding in Joburg

CONVERT WATER SLUDGE

INTO ENERGY STORAGE

• Rand Water e.g. produces

1000 tons tonnes/day

• Storage area filled

• Need beneficial use for it

• Can convert sludge farm

into energy storage farm

• Energy savings

• Sludge savings

• Backup power

IRP ENERGY SECTORS

• 22.9 GW of new RE

• 2,09 GW of new Energy Storage

• 31.7% of generation will be RE

• RE needs Energy Storage

• To date only Pumped Storage

• PS opportunities exhausted

• Crane storage can fill this gap

• Environmental benefits

• No leakage

• Cost effective

EV STORAGE SYSTEM

IN ACTION

DISCUSSION