MediumVI Energy Politics & Supply Security26 October 2026, Monday
Türkiye's installed electricity capacity passed 127,000 megawatts
Energy Minister Alparslan Bayraktar said on 25 October that installed capacity had reached 127,355 megawatts at the end of September. In remarks on 26 October he put the investment needed in the transmission and distribution grid at roughly 100 billion dollars.
On the ministry's breakdown, renewable installed capacity rose to 80,315 megawatts, or 63.1% of the total. Natural gas accounts for 25,009 megawatts, a 19.6% share. Domestic sources now carry 72.1% of installed capacity. September generation was 70.3% domestic, at 22.35 billion kilowatt-hours, while renewables supplied 18.10 billion kilowatt-hours for a 56.9% share. Bayraktar said import dependence in electricity had fallen below 30%.
Added capacity does not by itself produce supply security. Wind and solar output clusters in particular hours of the day and does not line up with peak demand. In a mix like that, the binding constraint is not the number of plants but the carrying and balancing capability of the network. That is why the 100 billion dollar figure is booked against the grid rather than generation.
The ministry wants to raise electricity's share of final energy consumption. That share was 15% in 2002 and stands at about 21% today; the targets are 30% in industry and 33% in buildings. As electrification deepens, the cost of an outage rises, because heating and production processes come to depend on a single carrier. A new energy architecture running to 2040 will be presented in Istanbul on 5 November.
Talay assessment
Bottom line
At 127,355 megawatts, with renewables at 63.1%, the capacity problem is largely behind Türkiye. The squeeze has moved to the network, and the 100 billion dollar grid figure is the admission of it. As electricity's share of final consumption is pushed from 21% towards 30% in industry, the system's margin for error narrows. How the investment is financed, and how much of it reaches tariffs, will be the real test of the 2040 architecture due on 5 November.
Likely effects
- Supply securityPositive1–6 months
A 70.3% domestic share in generation buffers against an imported fuel shock; variable output failing to match peak hours keeps the risk alive.
- TariffsNegative6 months+
Part of the 100 billion dollar grid programme will reach bills through distribution charges; the ministry says no price change is planned for October and November.
- External financingNegative1–6 months
Investment on this scale requires multi-year external borrowing; with reserves eroding, the cost of funding will set the order of projects.
Possibilities, ranked
- 1Phased grid programme55%
Investment advances through tenders split across years, and capacity keeps running ahead of the network.
Watch: The annual breakdown of grid investment in the 2040 document presented on 5 November
- 2Financing bottleneck30%
External funding costs rise, transmission projects are deferred and curtailment cases increase.
Watch: Cancelled TEİAŞ tenders, or the volume of renewable output curtailed by network constraints
- 3Early pass-through to tariffs15%
The investment burden reaches distribution charges after December and industry puts the cost increase on the agenda.
Watch: The change in unit charges in EPDK's 2027 distribution tariff decision
Probabilities are calibrated judgement based on the sources, not measurement, and are revised as new information arrives. Not investment advice.
Market reaction
Indicators affected
- Grid investment requirement▼ 100 billion dollars
- Renewable installed capacity▲ 80,315 MW
- Electricity import dependence▲ below 30%
- Peak-hour balancing load▼ rising