Bulgaria’s state-owned electricity transmission entity ESO has invested more than 182 million euros in grid works so far in 2026. The spending is taking place as the government seeks to keep household electricity and heating prices unchanged until 1 July 2027.
Transmission spending expands
ESO said its investment covered grid reconstruction, upgrades and new connections, including more than 120 km of new or reconstructed transmission lines and substation modernisation.
Bulgaria is also deploying renewable energy and batteries rapidly, but those projects do not remove grid constraints and can make network planning more complex. Large batteries, rising solar output and cross-border flows require substations, protection systems and transmission corridors able to manage more dynamic operating conditions.
Household prices protected
Deputy Prime Minister Atanas Pekanov said household electricity and heating prices would not rise before 1 July 2027. The Energy System Security Fund is supporting the price stability measures.
Protection for households does not fully extend to industry. Energy-intensive firms have compensation programmes, while concern remains over their competitiveness.
Shielding households from price increases can reduce social and inflation pressure, but may shift costs to public funds, regulated entities or business consumers. The policy challenge is to turn investment in storage and the grid into lower system costs quickly enough to prevent temporary tariff protection from becoming a lasting fiscal or industrial burden.
