aFRR Revenue Simulator

Transelectrica Balancing Market • DAMAS

DATA SOURCE

RO-TSO

Romanian aFRR Market Overview

source pending

aFRR+ Avg Price

175.0 €

per MWh activated

aFRR- Avg Price

-33.0 €

Negative = You GET PAID!

% Negative Prices

41%

of DOWN activations

Data Range

639 days

2024-01 → 2025-10

aFRR+ (UP)Discharge to grid

Min:50€|Max:450€

aFRR- (DOWN)Charge from grid

Min:-150€|Max:200€

How aFRR Works

aFRR+ (Up-Regulation)

Grid frequency LOW → Battery DISCHARGES → Get paid activation price → Recharge later at PZU

aFRR- (Down-Regulation)

Grid frequency HIGH → Battery CHARGES → Often GET PAID (negative prices!) → Save PZU cost

Romanian Market Insight

~41% of aFRR- activations have negative prices. This means you GET PAID to charge your battery!

Settlement: Pay-as-Bid per ANRE Order 2024. Capacity + Activation payments.

Battery & Market Configuration

FR Products

Power (MW)

Capacity (MWh)

Efficiency (%)

Investment (€)

CAPEX for payback calc

Capacity Price (EUR/MW/h)

PICASSO activation share (%)Throughput-bound

3.0%

0.91% = throughput cap for 10 MW BESS. Backend default 3%. Higher values produce identical MWh (saturation) but capacity revenue still scales with capacity-price input.

Recharge Cost (EUR/MWh)

PZU price to recharge after UP activations

Pay-as-Bid Activation Prices

UP Activation (EUR/MWh)

DOWN Activation (EUR/MWh)

Ready to Simulate

Configure battery and market parameters, then run simulation

DAMAS aFRR Price Explorer

15-min slots

aFRR Bidding Optimizer

AI-Powered

Analyze 638 days of historical data to optimize your bidding strategy

Safe Bid Calculator

Calculate optimal bid prices that maximize battery utilization while maintaining high acceptance rates. For batteries with capacity constraints (900 MWh/month), utilization rate matters more than price per MWh.

Target Acceptance Rate90%

80% (Balanced)85% (Moderate)90% (Conservative)95% (Ultra-Safe)

🎯 Conservative: Very high acceptance probability, safe and predictable.

Multi-product revenue split (Phase E)

Capacity (€/MW/h paid 24/7) vs activation (€/MWh paid when called). aFRR + mFRR settle pay-as-bid since ANRE Order 60/2024; FCR remains marginal-priced. Min-bid raises from 1 to 5 MW under MARI (2026-04-01).