Gobierno de Nicaragua Empresa Nacional de Transmisión Eléctrica, S.A. ENTRESA

Demanda de Energía (GWh) y Potencia (MW) BLOQUE ETAPA / 2006 ETAPA / 2007 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 1 1.02 1.02 1.01 0.99 0.98 0.98 0.95 0.96 0.96 0.96 0.98 0.99 1.04 1.04 1.06 1.00 1.05 1.04 1.02 1.02 1.00 1.01 1.01 0.98 0.96 0.98 2 7.8 7.8 7.7 7.5 7.4 7.4 7.2 7.2 7.2 7.3 7.4 7.6 8.0 7.8 8.0 7.6 7.9 7.9 7.7 7.6 7.5 7.6 7.6 7.3 7.2 7.3 3 19.3 19.7 18.9 18.7 18.6 19.1 18.3 18.7 18.4 18.5 19.0 19.3 20.3 20.3 20.7 19.2 20.6 20.4 20.0 20.1 19.3 19.7 19.8 18.7 18.8 19.0 4 14.8 14.7 14.9 14.5 14.3 14.3 13.9 13.8 13.8 14.0 14.3 14.3 14.9 15.2 15.0 14.3 15.3 15.4 14.7 14.6 14.3 14.3 14.6 14.4 13.7 14.2 5 17.2 17.5 17.3 17.1 16.5 16.8 16.4 16.4 16.7 16.5 16.8 16.9 18.1 18.4 18.5 18.0 18.2 18.6 18.5 18.5 17.5 18.1 18.4 16.3 16.5 17.7 TOTAL 60.2 60.7 59.9 58.7 57.8 58.6 56.8 57.1 57.2 57.3 58.5 59.1 62.4 62.7 63.3 60.2 63.2 63.3 62.0 61.8 59.6 60.9 61.4 57.7 57.2 59.2 DEMANDA ESPERADA 494 499 507 494 485 486 489 474 473 477 486 497 486 489 487 499 511 503 520 516 505 514 506 501 483 502 Precio Referencial Medio del Combustible (US $ / BBL) ETAPA / 2006 ETAPA / 2007 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 BUNKER 41.9131 41.9131 41.9131 41.9131 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.3314 44.5578 44.5578 44.5578 44.5578 44.5578 44.5578 44.5578 44.5578 44.5578 DIESEL 68.8687 68.8687 68.8687 68.8687 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 71.0627 73.5318 73.5318 73.5318 73.5318 73.5318 73.5318 73.5318 73.5318 73.5318 Secuencia Hidrológica de Apanás (m 3 /s) ETAPA / 2006 ETAPA / 2007 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 HISTÓRICA 9.91 6.86 4.46 2.75 4.29 4.40 3.50 3.29 2.61 3.26 2.04 1.94 2.11 0.83 1.55 0.68 0.38 0.82 0.41 1.12 1.38 1.52 2.27 4.80 7.89 11.26

DISPONIBILIDAD Y RESERVA DE POTENCIA (MW) EMPRESA DIC ENE FEB MAR ABR MAY 11 20 Semana 49 50 51 52 1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 21 22 HIDROGESA PCA-1 24 24 24 24 24 24 24 24 23 23 23 23 18 18 18 18 18 13 13 13 13 15 15 15 15 15 PCA-2 24 24 24 24 24 24 24 24 23 23 23 23 18 18 18 18 18 13 13 13 13 15 15 15 15 15 PSB-1 23 25 25 25 25 25 25 25 20 20 20 20 18 15 15 15 15 15 15 15 15 15 15 15 PSB-2 23 25 25 25 25 25 25 25 20 20 20 20 15 15 15 15 15 15 15 15 15 15 Total 94 98 98 98 98 98 98 98 85 85 85 85 35 35 53 50 65 55 55 55 55 60 60 60 60 60 GEMOSA PMT-1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PMT-2 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.3 27.5 27.5 27.5 27.5 26.0 26.0 26.0 26.0 27.5 27.5 27.5 27.5 27.5 Total 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.5 27.3 27.5 27.5 27.5 27.5 26.0 26.0 26.0 26.0 27.5 27.5 27.5 27.5 27.5 GEOSA PNI-1 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 PNI-2 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 PCHN 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 13.5 Total 100 100 100 100 64 64 64 64 64 64 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 114 GECSA PMG-3 28 28 28 28 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 PMG-4 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 PMG-5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 5.5 PLB-1 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 22 PLB-2 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 35 Total 74 74 74 74 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 108 CENSA - AMFELS 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 41 TPC- COASTAL 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 40.7 40.7 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 50.9 EEC-ENRON 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 50 EEC ADIC. - ENRON 18.5 18.5 18.5 18.5 18.0 18.0 18.0 18 18 18.0 18.0 18.0 18.0 16.1 18.0 15.2 9.2 18 18 16.1 18.0 18 18 17 18 17 MTR 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 27 PSA- NSEL 20 26 26 26 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 25 25 25 25 25 TIZATE 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 INTERCONEXIÓN NORTE SUR Disponibilidad Total 510 520 520 520 521 521 521 521 508 508 558 558 498 496 526 520 529 527 527 525 527 501 501 500 501 500 Demanda Esperada 494 499 507 494 485 486 489 474 473 477 486 497 486 489 487 499 511 503 520 516 505 514 506 501 483 502 Reserva Requerida 30.2 30.1 29.7 30.2 30.6 30.5 30.4 31.0 31.1 30.9 30.6 30.1 30.5 30.4 30.5 30.0 29.5 29.9 29.2 29.4 29.8 29.5 29.8 30.0 30.7 29.9 Reserva Disponible 15.9 21.4 13.2 25.6 35.8 34.8 32.2 46.6 34.8 31.2 72.0 61.2 11.2 6.7 38.4 21.0 17.9 23.1 6.8 8.5 21.6-12.5-4.5-1.2 17.8-2.0 Porcentaje de Cumplimiento Reserva de Mediano Plazo 53% 71% 44% 85% 117% 114% 106% 150% 112% 101% 236% 203% 37% 22% 126% 70% 60% 77% 23% 29% 72% -43% -15% -4% 58% -7% Altos de Santo Domingo, Managua, Nicaragua

Programa de Generación de Energía (GWh) GEMOSA GEOSA GECSA HIDROGESA PENSA MTR NSEL CENSA TPC EEC EEC TOTAL Energía Demanda SEMANA BLOQUE ADIC. ENERGIA no de Energía PMT-1 PMT-2 Total PNI -1 PNI-2 PCHN Total PMG -3 PMG -4 PMG -5 PLB -1 PLB -2 Total PCA PSB Total DISPON. servida Total 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.2 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.9 0.1 1.0 49 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.4 0.1 0.1 0.0 0.6 1.1 0.5 0.6 1.1 0.1 0.2 0.3 0.7 0.8 0.8 0.2 7.4 0.4 7.8 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.1 0.3 0.2 0.0 0.0 1.6 1.2 1.8 2.9 0.3 0.7 0.9 2.0 2.2 2.2 0.7 19.3 0.0 19.3 4 0.0 1.4 1.4 1.9 1.9 0.0 3.8 0.8 0.2 0.2 0.0 0.0 1.3 0.3 0.0 0.3 0.3 0.6 0.8 1.8 2.0 2.0 0.6 14.8 0.0 14.8 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 0.9 1.2 1.3 3.0 2.9 0.9 17.2 0.0 17.2 TOTAL 0.0 5.5 5.5 6.3 6.5 0.0 12.8 3.6 0.6 0.6 0.0 0.6 5.4 2.4 2.5 4.9 1.1 2.5 3.2 5.8 8.1 8.0 2.4 59.7 0.5 60.2 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.1 0.0 0.1 0.0 0.1 0.1 0.1 0.0 0.9 0.1 1.0 50 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.4 0.1 0.1 0.0 0.6 1.1 0.7 0.0 0.7 0.1 0.5 0.4 0.7 0.8 0.8 0.2 7.3 0.5 7.8 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.1 0.3 0.2 0.0 0.0 1.6 1.4 0.0 1.4 0.3 1.3 1.1 1.9 2.2 2.2 0.7 18.6 1.1 19.7 4 0.0 1.4 1.4 1.9 1.0 0.0 2.9 0.8 0.2 0.2 0.0 0.0 1.3 0.3 0.0 0.3 0.3 1.2 1.0 1.7 2.0 2.0 0.6 14.7 0.0 14.7 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.5 0.4 3.0 2.9 0.9 17.5 0.0 17.5 TOTAL 0.0 5.5 5.5 6.3 5.5 0.0 11.8 3.6 0.6 0.6 0.0 0.6 5.4 2.8 0.0 2.9 1.1 4.7 4.2 4.9 8.1 8.0 2.4 59.0 1.7 60.7 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.0 0.1 0.1 0.1 0.0 1.0 0.0 1.0 51 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.4 0.1 0.1 0.0 0.6 1.1 0.4 0.6 1.1 0.1 0.5 0.4 0.7 0.8 0.8 0.2 7.7 0.0 7.7 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.1 0.3 0.2 0.0 0.0 1.6 1.2 0.5 1.6 0.3 1.3 1.1 1.9 2.2 2.2 0.7 18.9 0.0 18.9 4 0.0 1.4 1.4 1.9 1.3 0.0 3.2 0.8 0.2 0.2 0.0 0.0 1.3 0.3 0.0 0.3 0.3 1.2 1.0 1.8 2.0 2.0 0.6 14.9 0.0 14.9 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.5 0.3 3.0 2.9 0.9 17.3 0.0 17.3 TOTAL 0.0 5.5 5.5 6.3 5.8 0.0 12.1 3.6 0.6 0.6 0.0 0.6 5.4 2.4 1.2 3.6 1.1 4.7 4.2 4.8 8.1 8.0 2.4 59.8 0.1 59.9 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.0 1.0 0.0 1.0 52 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.4 0.1 0.1 0.0 0.4 0.9 0.4 0.6 1.0 0.1 0.5 0.5 0.7 0.8 0.8 0.2 7.5 0.0 7.5 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.1 0.3 0.2 0.0 0.0 1.6 1.2 0.1 1.3 0.3 1.3 1.3 1.9 2.2 2.2 0.7 18.7 0.0 18.7 4 0.0 1.4 1.4 1.6 1.0 0.0 2.6 0.8 0.2 0.2 0.0 0.0 1.3 0.3 0.0 0.3 0.3 1.2 1.2 1.7 2.0 2.0 0.6 14.5 0.0 14.5 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.8 0.0 3.0 2.9 0.7 17.1 0.0 17.1 TOTAL 0.0 5.5 5.5 6.0 5.5 0.0 11.5 3.6 0.6 0.6 0.0 0.4 5.2 2.3 0.8 3.2 1.1 4.7 4.8 4.4 8.1 8.0 2.2 58.7 0.0 58.7 1 0.0 0.1 0.1 0.0 0.1 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.2 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.9 0.0 1.0 1 2 0.0 0.5 0.5 0.0 0.8 0.0 0.8 0.6 0.1 0.1 0.3 0.6 1.6 0.4 0.7 1.0 0.1 0.5 0.5 0.7 0.7 0.8 0.2 7.4 0.0 7.4 3 0.0 1.5 1.5 0.0 2.2 0.0 2.2 1.8 0.3 0.2 0.0 0.0 2.3 1.1 1.8 2.9 0.3 1.3 1.3 2.0 2.0 2.2 0.6 18.6 0.0 18.6 4 0.0 1.4 1.4 0.0 2.0 0.0 2.0 0.8 0.2 0.2 0.0 0.0 1.3 1.0 0.0 1.0 0.3 1.2 1.2 1.8 1.8 2.0 0.6 14.3 0.0 14.3 5 0.0 2.0 2.0 0.0 1.5 0.0 1.5 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.8 0.9 2.7 2.9 0.8 16.5 0.0 16.5 TOTAL 0.0 5.5 5.5 0.0 6.5 0.0 6.5 4.5 0.6 0.6 0.3 0.6 6.6 2.9 2.6 5.5 1.1 4.7 4.8 5.4 7.4 8.0 2.2 57.8 0.1 57.8 1 0.0 0.1 0.1 0.0 0.1 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.2 0.1 0.0 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.9 0.1 1.0 2 2 0.0 0.5 0.5 0.0 0.8 0.2 1.0 0.6 0.1 0.1 0.3 0.6 1.7 0.4 0.0 0.5 0.1 0.5 0.5 0.7 0.6 0.8 0.2 7.0 0.4 7.4 3 0.0 1.5 1.5 0.0 2.2 0.0 2.2 1.8 0.3 0.2 0.9 1.6 4.8 1.1 0.0 1.1 0.3 1.3 1.3 2.0 1.8 2.2 0.6 19.1 0.0 19.1 4 0.0 1.4 1.4 0.0 2.0 0.0 2.0 1.0 0.2 0.2 0.0 0.0 1.4 1.0 0.0 1.0 0.3 1.2 1.2 1.8 1.6 2.0 0.6 14.3 0.0 14.3 5 0.0 2.0 2.0 0.0 1.5 0.0 1.5 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.8 1.6 2.4 2.9 0.8 16.8 0.0 16.8 TOTAL 0.0 5.5 5.5 0.0 6.5 0.2 6.7 4.7 0.6 0.6 1.3 2.2 9.4 3.0 0.1 3.0 1.1 4.7 4.8 6.1 6.5 8.0 2.2 58.1 0.5 58.6 1 0.0 0.1 0.1 0.1 0.0 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.2 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.0 0.9 0.0 1.0 3 2 0.0 0.5 0.5 0.8 0.0 0.0 0.8 0.6 0.1 0.1 0.0 0.5 1.4 0.4 0.6 1.0 0.1 0.5 0.5 0.7 0.7 0.8 0.2 7.1 0.0 7.2 3 0.0 1.5 1.5 2.1 0.0 0.0 2.1 1.5 0.3 0.2 0.0 0.1 2.1 1.1 1.7 2.7 0.3 1.3 1.3 2.0 2.1 2.2 0.6 18.3 0.0 18.3 4 0.0 1.4 1.4 1.5 0.0 0.0 1.5 0.8 0.2 0.2 0.0 0.0 1.3 1.0 0.0 1.0 0.3 1.2 1.2 1.8 1.9 2.0 0.5 13.9 0.0 13.9 5 0.0 2.0 2.0 1.4 0.0 0.0 1.4 1.2 0.0 0.0 0.0 0.0 1.2 0.4 0.0 0.4 0.4 1.7 1.8 0.9 2.8 2.9 0.8 16.4 0.0 16.4 TOTAL 0.0 5.5 5.5 5.9 0.0 0.0 5.9 4.3 0.6 0.6 0.1 0.7 6.2 2.9 2.4 5.3 1.1 4.7 4.8 5.3 7.7 8.0 2.2 56.7 0.0 56.8

Programa de Generación de Energía (GWh) GEMOSA GEOSA GECSA HIDROGESA PENSA MTR NSEL CENSA TPC EEC EEC TOTAL Energía Demanda SEMANA BLOQUE ADIC. ENERGIA no de Energía PMT-1 PMT-2 Total PNI -1 PNI-2 PCHN Total PMG -3 PMG -4 PMG -5 PLB -1 PLB -2 Total PCA PSB Total DISPON. servida Total 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 1.0 0.0 1.0 18 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.6 0.1 0.1 0.1 0.5 1.4 0.4 0.7 1.1 0.1 0.0 0.4 0.7 0.8 0.8 0.2 7.6 0.1 7.6 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.8 0.3 0.2 0.0 0.0 2.3 1.0 2.0 3.0 0.3 0.0 1.1 1.9 2.2 2.2 0.7 19.6 0.2 19.7 4 0.0 1.4 1.4 1.9 1.3 0.0 3.2 0.8 0.2 0.2 0.0 0.0 1.3 0.8 0.1 0.9 0.3 0.0 1.0 1.7 2.0 2.0 0.6 14.3 0.0 14.3 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.1 0.3 0.0 0.0 1.6 0.4 0.0 0.4 0.4 0.0 1.5 2.6 3.0 2.9 0.9 18.1 0.0 18.1 TOTAL 0.0 5.5 5.5 6.3 5.8 0.0 12.1 4.5 0.7 0.9 0.1 0.7 6.9 2.6 2.9 5.5 1.1 0.0 4.0 7.0 8.1 8.0 2.4 60.6 0.3 60.9 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 1.0 0.1 1.0 19 2 0.0 0.5 0.5 0.8 0.8 0.0 1.6 0.6 0.1 0.1 0.2 0.6 1.6 0.4 0.5 0.9 0.1 0.0 0.4 0.7 0.8 0.8 0.2 7.5 0.1 7.6 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.8 0.3 0.2 0.1 0.9 3.3 1.0 1.2 2.1 0.3 0.0 1.1 1.9 2.2 2.2 0.7 19.7 0.1 19.8 4 0.0 1.4 1.4 1.9 1.6 0.0 3.5 0.9 0.2 0.2 0.0 0.0 1.4 0.7 0.1 0.8 0.3 0.0 1.0 1.7 2.0 2.0 0.6 14.6 0.0 14.6 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.3 0.3 0.3 0.0 0.0 1.9 0.3 0.0 0.3 0.4 0.0 1.5 2.6 3.0 2.9 0.9 18.4 0.0 18.4 TOTAL 0.0 5.5 5.5 6.3 6.1 0.0 12.5 4.6 0.9 0.9 0.4 1.5 8.3 2.4 1.8 4.2 1.1 0.0 4.0 7.0 8.1 8.0 2.4 61.2 0.2 61.4 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.9 0.0 1.0 20 2 0.0 0.5 0.5 0.8 0.8 0.0 1.5 0.6 0.1 0.1 0.1 0.5 1.4 0.3 0.6 0.9 0.1 0.0 0.4 0.7 0.8 0.8 0.2 7.3 0.0 7.3 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.6 0.3 0.2 0.0 0.4 2.4 0.8 1.2 2.1 0.3 0.0 1.1 2.0 2.2 2.2 0.6 18.7 0.0 18.7 4 0.0 1.4 1.4 1.9 1.5 0.0 3.4 0.9 0.2 0.2 0.0 0.0 1.4 0.6 0.1 0.7 0.3 0.0 1.0 1.8 2.0 2.0 0.6 14.4 0.0 14.4 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.2 0.0 0.2 0.4 0.0 1.5 1.4 2.9 2.9 0.8 16.3 0.0 16.3 TOTAL 0.0 5.5 5.5 6.3 6.0 0.0 12.3 4.4 0.6 0.6 0.2 0.9 6.6 2.1 1.9 4.0 1.1 0.0 4.0 5.8 8.0 8.0 2.2 57.6 0.1 57.7 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.9 0.0 1.0 21 2 0.0 0.5 0.5 0.8 0.8 0.0 1.6 0.6 0.1 0.1 0.1 0.4 1.3 0.3 0.5 0.8 0.1 0.0 0.4 0.7 0.8 0.8 0.2 7.2 0.0 7.2 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.6 0.3 0.2 0.1 0.3 2.4 0.8 1.3 2.1 0.3 0.0 1.1 2.0 2.2 2.2 0.7 18.8 0.0 18.8 4 0.0 1.4 1.4 1.7 1.2 0.0 2.9 0.8 0.2 0.2 0.0 0.0 1.3 0.5 0.1 0.6 0.3 0.0 1.0 1.8 2.0 2.0 0.6 13.7 0.0 13.7 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.0 0.0 0.0 1.2 0.2 0.0 0.2 0.4 0.0 1.5 1.6 2.9 2.9 0.9 16.5 0.0 16.5 TOTAL 0.0 5.5 5.5 6.0 5.8 0.0 11.8 4.3 0.6 0.6 0.2 0.8 6.4 1.9 2.0 3.9 1.1 0.0 4.0 6.1 8.0 8.0 2.4 57.2 0.0 57.2 1 0.0 0.1 0.1 0.1 0.1 0.0 0.2 0.1 0.0 0.0 0.0 0.1 0.2 0.0 0.1 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.9 0.0 1.0 2 0.0 0.5 0.5 0.8 0.8 0.0 1.6 0.6 0.1 0.1 0.1 0.5 1.3 0.3 0.6 0.9 0.1 0.0 0.4 0.7 0.8 0.8 0.2 7.3 0.0 7.3 22 3 0.0 1.5 1.5 2.1 2.2 0.0 4.3 1.5 0.3 0.2 0.0 0.4 2.5 0.8 1.5 2.3 0.3 0.0 1.1 1.9 2.2 2.2 0.6 19.0 0.0 19.0 4 0.0 1.4 1.4 1.8 1.5 0.0 3.3 0.9 0.2 0.2 0.0 0.0 1.3 0.5 0.2 0.7 0.3 0.0 1.0 1.7 2.0 2.0 0.6 14.2 0.0 14.2 5 0.0 2.0 2.0 1.4 1.5 0.0 2.9 1.2 0.0 0.2 0.0 0.0 1.4 0.2 0.0 0.2 0.4 0.0 1.5 2.5 3.0 2.9 0.8 17.7 0.0 17.7 TOTAL 0.0 5.5 5.5 6.2 6.0 0.0 12.2 4.3 0.6 0.7 0.2 0.9 6.8 1.9 2.3 4.1 1.1 0.0 4.0 7.0 8.1 8.0 2.2 59.1 0.1 59.2 TOTAL 0.00 142.31 142.31 141.72 126.87 1.38 269.98 111.25 14.83 15.51 5.59 26.81 173.99 70.27 34.17 104.43 28.21 96.60 117.62 145.08 207.26 207.48 59.07 1552.03 4.54 1556.57

Balance Hidrológico de Apanás SEMANA GENER CONSUMO NIV. INIC. VOL. INIC. APORTE NETO (M.MCu.) VERT NIV. FIN. VOL. FINAL GWH M.MCu. MSNM M.MCu. PROPIO BOMBEO TOTAL MSNM M.MCu. 49 2.424 4,463.8 953.560 299,144 2,967.4 328.7 3,296.1 0.000 953.53 297,976 50 2.829 5,196.9 953.530 297,947 2,049.5 174.0 2,223.4 0.000 953.45 294,974 51 2.357 4,336.1 953.450 294,755 1,522.8 135.5 1,658.4 0.000 953.38 292,077 52 2.341 4,313.5 953.380 291,962 1,149.1 159.1 1,308.2 0.000 953.30 288,957 1 2.886 5,331.9 953.300 288,770 1,155.5 727.5 1,883.0 0.000 953.21 285,321 2 2.953 5,470.7 953.210 285,179 1,240.9 682.5 1,923.4 0.000 953.12 281,632 3 2.888 5,366.1 953.120 281,588 1,920.0 688.9 2,608.9 0.000 953.05 278,831 4 2.892 5,391.5 953.050 278,795 1,795.3 669.5 2,464.8 0.000 952.97 275,868 5 2.945 5,508.1 952.970 275,711 1,495.4 638.4 2,133.8 0.000 952.87 272,337 6 3.037 5,706.5 952.870 272,081 1,850.1 531.1 2,381.2 0.000 952.77 268,756 7 2.915 5,496.7 952.770 268,451 1,203.3 444.6 1,647.9 0.000 952.66 264,602 8 2.938 5,567.2 952.660 264,458 1,145.4 488.5 1,633.9 0.000 952.55 260,525 9 2.913 5,546.4 952.550 260,465 1,189.3 412.8 1,602.1 0.000 952.44 256,521 10 2.877 5,505.0 952.440 256,472 509.5 290.5 800.0 0.000 952.31 251,767 11 2.894 5,569.4 952.310 251,753 867.5 237.7 1,105.2 0.000 952.18 247,289 12 2.878 5,570.5 952.180 247,034 398.8 277.5 676.3 0.000 952.04 242,140 13 2.891 5,644.8 952.040 241,952 222.1 211.5 433.6 0.000 951.88 236,741 14 2.881 5,767.3 951.880 236,408 578.3 241.4 819.6 0.000 951.73 231,460 15 2.897 6,033.6 951.730 231,293 259.0 205.2 464.2 0.000 951.56 225,724 16 2.917 6,454.4 951.560 225,496 734.8 184.5 919.3 0.000 951.39 219,961 17 2.863 6,875.4 951.390 219,699 916.3 212.5 1,128.8 0.000 951.22 213,952 18 2.587 6,638.9 951.220 213,902 989.4 316.8 1,306.2 0.000 951.06 208,569 19 2.401 6,648.6 951.060 208,446 1,486.2 393.5 1,879.7 0.000 950.91 203,677 20 2.070 6,064.3 950.910 203,403 3,114.1 717.4 3,831.5 0.000 950.84 201,170 21 1.905 5,765.7 950.840 201,072 4,873.5 751.7 5,625.2 0.000 950.83 200,932 22 1.885 5,812.0 950.830 200,739 7,009.6 1,130.4 8,140.1 0.000 950.89 203,067 TOTAL 70.267 146,045.3 953.560 299,144.00 42,643.2 11,251.9 53,895.1 0.000 950.890 203,067.06

Nivel Inicial de Apanás 957.0 956.0 955.0 954.0 953.0 MSNM 952.0 951.0 950.0 MAXIMA MEDIA MINIMA PROGRAMADA 949.0 948.0 49 50 51 52 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Estación: VERANO DIC -06 / MAY -07 Volumen IniciaVolumen Final

Costo de Oportunidad de la Generación Hidráulica US $/MWh 600 500 400 300 200 100 C. AMERICA SN. BARBARA 0 49/2006 50/2006 51/2006 52/2006 01/2007 02/2007 03/2007 04/2007 05/2007 06/2007 07/2007 08/2007 09/2007 10/2007 11/2007 12/2007 13/2007 14/2007 15/2007 16/2007 17/2007 18/2007 19/2007 20/2007 21/2007 22/2007 C. AMERICA 271.63 271.09 276.76 278.85 274.29 275.63 273.56 279.21 281.09 254.94 257.33 258.81 331.19 371.96 268.43 270.86 264.88 272.33 285.24 304.33 342.06 381.39 415.34 461.49 481.79 503.54 SN. BARBARA 272.3 283.94 245 240 245 306 289 314 300 291.7 241 195 160 107 116.57 118.54 121.99 201.43 243 282 216 223 207 223 211 223

Precios Indicativos de la Energía en el Mercado de Ocasión y por Escalon de Demanda 350 US $/MWh 300 250 200 150 100 50 0 49/2006-01 50/2006-01 51/2006-01 52/2006-01 01/2007-01 02/2007-01 03/2007-01 04/2007-01 05/2007-01 06/2007-01 07/2007-01 08/2007-01 09/2007-01 10/2007-01 11/2007-01 12/2007-01 13/2007-01 14/2007-01 15/2007-01 16/2007-01 17/2007-01 18/2007-01 19/2007-01 20/2007-01 21/2007-01 22/2007-01

Tabla de Precios de Energía por Escalón de Demanda SEMANA BLOQUE PRECIO SEMANA BLOQUE PRECIO US $/MWh US $/MWh 49 1 291.58 10 1 306.86 2 271.63 2 263.34 3 242.18 3 180.83 4 83.96 4 103.10 5 71.01 5 87.78 50 1 291.58 11 1 264.69 2 290.59 2 257.15 3 269.62 3 231.25 4 83.96 4 102.86 5 71.01 5 87.78 51 1 277.17 12 1 263.12 2 158.24 2 180.83 3 142.40 3 120.75 4 83.96 4 91.16 5 71.01 5 87.78 52 1 242.18 13 1 262.05 2 145.91 2 180.83 3 145.63 3 123.89 4 81.42 4 106.33 5 65.60 5 87.78 1 1 274.21 14 1 263.32 2 230.24 2 206.02 3 214.20 3 180.80 4 123.25 4 99.74 5 87.78 5 85.18 2 1 304.90 15 1 276.89 2 274.62 2 259.10 3 229.80 3 119.38 4 123.32 4 99.74 5 87.78 5 85.18 3 1 264.10 16 1 270.44 2 208.98 2 241.35 3 147.11 3 120.02 4 103.10 4 99.74 5 87.78 5 85.18 4 1 286.52 17 1 262.09 2 230.37 2 258.82 3 225.23 3 113.07 4 103.10 4 88.44 5 87.78 5 85.18 5 1 282.26 18 1 272.38 2 257.52 2 257.78 3 191.66 3 233.02 4 103.10 4 103.71 5 87.78 5 90.39 6 1 278.32 19 1 280.80 2 247.85 2 239.45 3 213.96 3 216.24 4 103.10 4 106.57 5 87.78 5 97.02 7 1 228.53 20 1 269.56 2 200.81 2 209.76 3 122.20 3 157.30 4 91.22 4 106.97 5 82.46 5 85.18 8 1 224.71 21 1 257.58 2 220.05 2 164.36 3 133.29 3 150.13 4 91.23 4 101.05 5 82.46 5 85.18 9 1 299.06 22 1 270.56 2 262.64 2 205.02 3 180.83 3 159.56 4 103.10 4 108.24 5 87.78 5 87.05 Teléfonos: 276 0501 / 276 0533 Fax: 276 0373 Email: medianoplazo@cndc.org.ni