Solar energy has long been the backbone of the energy transition. But it is only with battery storage that your PV system becomes truly economical: you use more of your own solar power, reduce your energy costs and become more independent from the grid.
TESVOLT offers solutions for this, from commercial storage systems to large battery parks – efficient, durable and "Made in Germany".
If you have any questions about a customised energy storage solution for your project, we are here to help!
During the day, your PV system produces electricity – but consumption is usually highest in the early morning and evening hours. Without storage, the surplus flows into the grid at significantly lower feed-in tariffs (currently around 7 cent/kWh, with electricity prices sometimes exceeding 25 cent/kWh for businesses). When electricity prices are negative, the feed-in tariff is even eliminated entirely.
A TESVOLT storage system compensates for this gap: it stores the PV electricity generated and then makes it available when your business needs it. This allows you to increase your self-consumption share to up to 80% – and protect yourself from rising energy costs in the long term.
As a rule of thumb, the usable storage capacity should be around one third of the PV output in kWp. For a 60 kWp system, this equates to around 20 kWh of storage capacity – or more, depending on the load profile.
And best of all: with TESVOLT hybrid inverters, PV generation and storage can be directly coupled – saving you the need for a separate PV inverter and increasing system efficiency at the same time.
In order to store electricity during the day and use it at the desired time, a winegrower in Languedoc, France, is installing a 7 kWp photovoltaic system together with the TS 48 V battery storage system from TESVOLT. This is because, especially in agriculture, electricity is often needed when the sun is not yet at full power or has already set. With this storage system, the family-run agricultural business is saving money AND significantly reducing its emissions.
Many PV systems from the 2010s will soon lose their feed-in bonus. Instead of continuing to feed electricity into the grid at low prices, it makes sense to use it yourself.
With TESVOLT storage systems, existing PV systems can be easily retrofitted – regardless of the manufacturer of your inverters.
This allows you to transform your old system into a state-of-the-art, efficient energy system: PV generation, storage and consumption are optimally coordinated. This reduces your energy costs and increases the value of your system in the long term.
A freight forwarding company in North Rhine-Westphalia is independent of the power grid thanks to its solar power system and electricity storage facility. A photovoltaic system with a peak output of 80 kilowatts (kWp) covers the company's entire electricity requirements thanks to the TESVOLT storage facility with a capacity of 50 kilowatt hours. The storage system has been retrofitted so that it not only supplies solar power to the company's IT systems, truck workshop, two truck wash facilities and electric forklifts, but also functions as an emergency power solution.
When large PV systems generate electricity, storage can make its use significantly more economical. TESVOLT Projects offers tailor-made battery storage solutions for ground-mounted systems and energy suppliers – including project development, installation and operation.
This is how solar parks become real battery parks: with intelligent energy management, municipal utilities or operators can store surplus electricity, trade it on the energy market or provide balancing power.
In Großschirma, a 5-hectare commercial area is being used innovatively as a solar park. The Green Energy 3000 Group, an international project developer from Leipzig, chose the TPS-E from TESVOLT in a 45-foot container as its battery storage solution. The 5.1 MWp PV system with bifacial solar modules is sufficient to supply 1,800 households with electricity. The operators receive an increased feed-in tariff and can simultaneously market the storage performance and capacity, for example through arbitrage transactions or participation in the balancing power market.
Our systems are scalable, highly secure and optimised for maximum cost-effectiveness. Whether you are looking to retrofit, increase your own consumption or install large-scale storage, TESVOLT offers you the right solution.
Find out how you can use your solar power even more efficiently – with a battery storage system from TESVOLT.
by Cicero Design
German