As of 1 August 2026, there has been no systemic revolution in electricity sharing, but rather a series of technical and administrative improvements to the existing framework introduced by the Lex OZE II.
Of key importance is Decree No. 132/2026 Sb. which amends the Electricity Market Rules[1], supplemented by Decree No. 131/2026 Sb. on billing, and by the partial applicability of Lex OZE III.
The basic legal framework remains unchanged
The real changes come in the form of implementing regulations issued by the Energy Regulatory Office (ERO).
What is actually changing from 1 August 2026
Wider use of an efficient allocation method. The limit for using the five-round (iterative) method for the redistribution of shared electricity is being increased from the current 50 to 100 transfer points within a sharing group. Larger sharing groups are therefore no longer reliant on a less efficient static method, where up to half of the electricity shared amongst members was “lost”. For larger communities and projects with dozens up to a hundred connection points, this is one of the most significant economic changes in this package.
Longer registration deadlines. Applications for registration of allocation to a sharing group can now be submitted by midnight on the relevant day, instead of 10.00 a.m. as was previously the case, without having to wait until the following working day. This makes it easier to manage registrations and changes within sharing groups.
New rules for battery storage. A brand-new section “Seventeen A” of the Electricity Market Rules[2] introduces separate registration of transfer points for the purposes of electricity storage and a methodology for calculating the quantity of electricity withdrawn for storage and fed back from the storage, including the combination of storage and generation.
Communities operating a battery storage thus gain an instrument that can be directly utilised for managing the time lag between generation and consumption within the sharing scheme.
A framework for flexibility and aggregation. The new provisions[3] introduce a registration and settlement mechanism for the provision of flexibility, including a default supply and off-take diagram, responsibility for imbalances when flexibility is activated, and a procedure for changing an aggregator’s allocation.
Energy communities can therefore offer flexibility either directly or through an aggregator, and link it to their electricity-sharing schemes.
What remains unchanged, despite expectations
It was expected that two key restrictions on sharing groups – which communities have long regarded as an obstacle to further growth (a limit of 1,000 registration numbers for transfer points per group, and one transfer point in only one sharing group) – would be lifted. However, they were not lifted – on the contrary, the ERO expressly confirmed both rules directly in a decree:
- The limit of 1,000 registration numbers for transfer points per sharing group remains applicable and is now explicitly set out directly in the text of the decree.
- The principle of “one transfer point in only one sharing group” remains applicable and has also been expressly confirmed in the decree.
Communities wishing to exceed this capacity limit must therefore continue to operate with multiple parallel sharing groups within a single community. The announced “relaxation” of the limits on sharing groups thus did not take place – instead, the regulator opted to increase the capacity of a more efficient allocation method.
What does this mean in practice?
For operators and founders of energy communities, the new rules introduce technical and administrative improvements: more efficient allocation of shared electricity within larger groups, extended registration deadlines, and a new, compact regulatory framework for the crediting of battery storage and for the provision of flexibility. On the other hand, the anticipated relaxation of capacity limits on sharing groups did not materialise, and communities aiming to expand beyond 1,000 transfer points now have to operate with multiple sharing groups.
