Nature uses organic molecules as an effective energy storage system

Stability for
living plants

Lignin can be found in every plant, being responsible for its rigidity. It is mainly extracted from wood or straw. Lignin is generated in the pulp and paper production as waste product in large amounts.

Lignin as raw
material for batteries

Lignin is a renewable resource and the largest natural source of aromatic compounds from which efficient electrolytes can be manufactured. A few kilograms of a suitable organic electrolyte store 1 kWh of capacity.


In the biosphere, billions of tons of lignin grow annually. In the pulp industry alone, about 50 million tons of lignin are produced industrially worldwide each year, but most of it is incinerated because there is no profitable utilization.

Lignin is an abundant, natural source for large-scale energy storage.

With the amount of Lignin available today, almost every future energy demand scenario can be met.

Safe, sustainable and environmentally
friendly from renewable resources

Organic Flow does not have any resource issue and is one of the few existing technologies for large-scale storage

Lignin in the

0Billion tons per year

Lignin in the

0Million tons per year


0Million tons per year

Achievable storage capacity

0Gigawatt-hours per year
Sources: Kadereit et al. 2014, Zakzeski et al. 2009

operational safety

As aqueous solutions the organic electrolytes are neither flammable nor explosive. Thus, safe operation for equipment, personnel and environment can be ensured.


The complete value chain can be established locally and the raw material basis can be secured long-term. The production does not require critical raw materials from unreliable sources.


Lignin is a renewable resource and is available in sufficient amounts from existing pulp production. No tight or finite resources are consumed. The electrolyte can be completely recycled or regenerated.