Electrical Storage Systems

S4 Energy supplies electrical energy storage systems consisting of self-developed KINEXT technology and/or other storage technologies such as batteries.

KINEXT is an innovative flywheel technology, in which electricity is converted into motion and vice versa. KINEXT has a capacity 8 to 15 times higher than traditional flywheel technologies and is capable of absorbing and releasing instantaneous high electrical power with exceptionally high efficiency and short response time. This provides capacity increase combined with solutions for peak shaving, voltage support, reactive power compensation and uninterrupted power supply (UPS).

1. Allows consumption to be modulated behind the meter or short-term network power outages to be bridged for up to minutes.
2. Includes power electronics and integral management software.
3. Includes “off the shelf engines” motor/generators and drives to enable maintenance by the factory maintenance team.
4. Offers the possibility to align the phase of the AC with the alternating voltage.
5. Minimizes the need for a larger electricity connection due to reactive power or peak load.

Industry with (e.g.) the following properties:

• Processes with short, high power peaks
• Processes that are not resistant to sudden power fluctuations
• Processes where electricity supply should not stop in case of a grid failure

(validated by model calculation)

A company active in the process industry wants to double its production capacity. The average power requirement increases from 305kW to 700kW, but the peak requirement becomes 2MW for 30 seconds, every 3-4 minutes. By using storage, the peak can be flattened, which prevents the grid connection to be increased, including investments in cabling (1,500 meters) and a new transformer. The result is an initial investment saving of approximately € 250K, an acceleration of the turnover increase of about 6-18 months and a reduction of the periodic network rates by about 20%. Moreover, self-generated PV energy can also be better used by temporarily buffering the difference between generation and internal demand.

• Better use of self-generated renewable energy
• Avoiding or reducing connection costs (both one-off and periodically)
• Avoiding peak power demand from fossil-fuelled powerplants
• Avoiding unnecessary waste and downtime costs due to unplanned production stops
• Useful (re) use of self-generated renewable energy

• Optimising operations due to improved reliability of power distribution system.

S4 Energy Nederland