ESENAR
Mercado SolarCrowdfunded solar plants, paid upfront or in installments
Ana P. (investor, example)

Interactive prototype · all figures are examples[CNV registration: pending]Projected returns, not guaranteedInvestment is subject to Argentine regulation

Spot price

What a solar plant without a contract gets paid: the hourly marginal cost of the Argentine wholesale market, hour by hour and in dollars, with no floor and no cap (Res. SE 400/2025).

Hourly marginal cost · Market
52.4USD/MWh
−154.1 (−74.6 %) vs. yesterday at the same hour (USD 206.4)
Last published hour: 19:00 to 20:00 on Mon 10/19/2026 · Checked 10/19, 21:09
Source: CAMMESA, hourly marginal cost (operated). In pesos: ARS 79,793/MWh at the BCRA wholesale A 3500 rate of 10/19/2026 (ARS 1,523.35).
Daily average, all hoursDaily average, solar hoursReference PPA
Average in solar hoursUSD 96.2Weighted by each hour's solar output. This is what a solar plant without a contract gets paid.CAMMESA and BCRA, 10/18/2025 to 10/19/2026.
Average of all hoursUSD 93.0The last year, 10/18/2025 to 10/19/2026.CAMMESA and BCRA, 10/18/2025 to 10/19/2026.
Difference+3.2 (+3 %)Solar minus the average, in USD/MWh.CAMMESA and BCRA, 10/18/2025 to 10/19/2026.

A solar plant is paid the price of the hours in which it produces, not the day's average: at midday every solar plant injects at once, cheap energy is in surplus and the marginal cost drops right when they sell. Over the last year that has not shown up yet: it was paid USD 3.2 more than the average, because midday is also a high-demand hour. Over the last 30 days it was already paid USD 2.0 less.

Monthly average over the last year USD/MWh · CAMMESA and BCRA

MonthAll hoursSolar hoursDifferenceHours with data
Nov 20253335+3696
Dec 20254045+5744
Jan 20265761+4744
Feb 20265460+6672
Mar 20266369+5738
Apr 20268694+8716
May 2026191197+6742
Jun 2026200201+1720
Jul 2026153166+13744
Aug 2026142139−3744
Sep 20266253−9720
Oct 2026 to 10/193634−2451

Weighted by each month's solar output, Nov 2025 to Oct 2026: USD 84/MWh. Without May to August: USD 55/MWh.

This is how the project memo computes it: each month's solar price weighted by what a fixed-tilt plant produces that month (high in summer, low in winter). The weights are an estimate, not a measured figure. Solar hours with zero marginal cost over the last year: 1.6 % (72 hours).

Data: CAMMESA, operated hourly marginal cost for the Market area, public service pub-svc (costoMarginal), 10/18/2025 to 10/19/2026, converted to dollars at the BCRA wholesale A 3500 rate of each day. History up to the seed date comes from the memo's download; today and yesterday are requested from the service every hour. CAMMESA does not return 11/10/2025 (service error); that day is left blank. Solar hours: 07 to 19 h, weighted with a bell centred at 13 h. The node loss factor and the 80/20 blend of Res. 400 are not included. The reference PPA (USD 55–60) comes from the project memo and the press: CAMMESA does not publish MATER prices.