Energiforsk 2026-1185 Ledtider för Energiomställningen (2026)

Energiforsk Report 2026:1185, Ledtider för energiomställningen — En analys av ledtider och utbyggnadstakt i det svenska elsystemet (May 2026) — produced within the NEPP programme by IVL Svenska Miljöinstitutet and Profu. Authors: Erik Lindblom, Ebba Löfblad, Mikael Malmaeus, Jenny Westerberg. Analyses how lead times for planning, permitting, and construction of generation and grid constrain the pace at which electrification scenarios can be realised.

Key claims

• Lead times are a central constraint on build-out pace and a major source of implementation (genomförande) risk. The study combines NEPP demand/generation scenarios with lead-time and realisation-rate (genomförandegrad) estimates per technology and per grid type to derive how much new capacity must be initiated over time.
• Scenarios to 2045 require very high and early project initiation. The government’s 300 TWh planning target implies that decisions on new capacity must be taken well before the need arises.
• Investeringsskuld (investment gap/debt): already today there is a shortfall of initiated projects relative to the scenario pathways — a gap that compounds over time.
• Permitting processes and grid connection are the key bottlenecks. Lead times vary widely between technologies and constitute substantial implementation risk.
• Even large improvements only partly close the gap. Cutting lead times or raising the realisation rate reduces, but does not eliminate, the gap between possible and expected build-out pace.
• Market conditions matter as much as formal lead times. Investment willingness varies over time and can be as binding a constraint as institutional lead times.
• Reinvestments mostly add no net capacity. A significant share of future investment merely maintains existing capacity, further raising the required project-initiation and execution capacity — though the report notes an exception: wind repowering (replacing older, smaller turbines with fewer, larger ones) can partly contribute a net capacity increase alongside the replacement.
• Conclusion: fast build-out requires action on several fronts at once — shorter lead times plus a high and sustained initiation rate, good investment conditions, and functioning coordination between generation, grid, and consumption. Build-out is a complex interplay of technical, institutional, and economic factors.

Relevance to wiki

• Long-Term Market Analysis — lead times and investeringsskuld as constraints on realising the 300 TWh / 2045 scenarios.
• Capacity Adequacy and Flexibility as the Missing Reserve — the investment gap as an adequacy risk; build-out cannot be assumed on schedule.
• Svenska kraftnät — context for the LT50 lead-time-halving programme.
• Grid Capacity Utilization — the lead-time gap is precisely why freeing capacity in existing grids matters while build-out catches up.
• Congestion Management — grid-expansion timelines.