Remarkable yield return for self-supply from solar power

Remarkable yield return for self-supply from solar power

A recent study about German households that supply themselves with solar power calculated the estimated yield return, which, throughout the next years, is expected to rise by over 4% – probably even by as much as 24 %.


With increasing awareness of the importance of renewable energy resources, solar power is becoming more and more popular as Germans attempt to reduce their carbon footprints.


Self-supply with solar power pays off

However, many prospective users are uncertain regarding the return of their investment and doubt its fruitfulness. Recently, Agora Energiewende, a German non-profit organization that aims to find easy solutions to help achieve a successful energy transition, asked Prognos AG to conduct an analysis on the development of the yielded returns. Its result predicts a golden future for citizens that decide to obtain their required solar power themselves, as their photovoltaic systems could yield returns of more than 4 % over the next years – and this rate could even grow to as much as 24 %, depending on whether the PV installation includes heat and battery storage.


No major role for solar power predicted

Even so, the study clearly shows that conventional electricity will continue to play the major role, as no more than one out of five kilowatt-hours provided by the grid and used by two families maximum can be replaced by solar energy. Thus, over the course of one year about 20 terawatt-hours can be gained through green instead of conventional power.

“For commercial buildings in the sectors best suited to solar PV, agriculture and food trade, the potential for self-consumption is considerably lower: approximately four terawatt-hours annually, displacing around 13 per cent of the grid-supplied power. At best, self-consumption from these sectors and from single- and two-family homes combined is five per cent of today’s net electricity demand of approximately 530 terawatt-hours per year,“ Christopher, Director of Communication at Agora Energiewende, stated recently in an article.


No disadvantages for households without green energy

Among those citizens who continue to use traditional energies, unease is spreading due to these recent developments. Many of them fear an increase in their cost related to the sinking number of households that defect from the grid.

However, there is no need to set a critical eye on green energy, as its growth will have next to no impact on these customers. Dr. Patrick Graichen, Executive Director of Agora Energiewende, confirms this: “Even if every eligible homeowner installed a rooftop solar array overnight so they could generate their own power, the EEG-surcharge would only increase by a maximum of 0.5 cents per kilowatt-hour.”


Clear regulations wanted for homeowners and tenants alike

Not everyone can benefit from these developments in the same way. A variety of, often confusing and contradictory, regulations made it hard for tenants to profit from PV installations on their roof. Thus experts like Dr. Graichen call for action and ask for a clear regulatory framework that enables both homeowners and tenants to easily access the energy they produce.


Title image: esbobeldijk/shutterstock

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