The total installed capacity for electricity generation from renewable sources is estimated to increase by 18,716 MW from 2010-2025 in Mexico, leading to more than 30,000 MW. 52 % increase will take place through self-supply or self-consumption patterns, particularly in wind projects.
In 1992 the Law on Public Service for Electric Energy was amended to allow private sector participation in power generation through self-supply or self-consumption patterns, independent producers, small producers, cogeneration, export and import.
On August 21, 2012, the Official Journal of the Ministry of Energy of Mexico published a Resolution by the Energy Regulatory Commission approving the contract model for interconnection for collective source of renewable energy or collective system of small scale efficient cogeneration. This resolution was part of the 2007 – 2012 National Development Plan strategies aiming at promoting energy efficiency and the adoption of clean technologies for power generation. A goal of 4,246 MW from renewable energy, which was intended to reduce both CO2 emissions and dependence on fossil fuels was established for the period.
In April 2010 the interconnection agreement model was already established for small scale renewable energy setting the rules for net metering between energy delivered and the energy received for the benefit mainly of small-scale generators. This model took into account the needs of neighboring communities as for their obligations and rights, as well as consideration of cogeneration within these systems provided they met established performance criteria.
These models also allowed self generating up to 0.5 MW of installed capacity with the conditioning of reporting twice a year on the net energy exchanged with the National Electric System.
Equipment for multifamily housing should be placed together in a space specifically dedicated to it, and the infrastructure needed to interconnect is shared between different facilities. There will be an electric energy measurement system (bidirectional meter) owned by CFE. The energy generated is apportioned among the properties in proportion allowing these properties to obtain a common benefit of the whole system that will reduce costs for the consumption of electric power individually supplied to them by CFE.
Billing and payments
For billing purposes, the Producer’s kWh consumption is determined as the difference between the electrical energy delivered by the Supplier to the Producer and the Energy Delivered by the Producer for the billing period. When the difference is negative, it will be treated as a credit to the Producer that may be offset within the period of the 12 following months. When the difference is positive, it will be considered as a credit in favor of the Supplier and will be billed to each Producer at the rate applicable.
In February 2012 the share of renewable self-consumption from small producers was 80 MW installed out of a total of 3,224 MW, representing 1.9% of the total. Solar energy is also forecasted to increase by almost 1,000 % from 2012 to 2018, resulting in an expected exponential growth of self-consumption facilities.
These forecasts for self-consumption for the period 2010-2025 call for an increase of some 9,764 MW, where the wind would take 84.6 % hydro, 5.9%, 3.3% biomass, and solar energy 6.1%, which translates for the latter in some 600 MW.
Next May, the Asturian company Alusin Solar will have a new distributor in Querétaro. APSOL will distribute solar structures for small self-consumption installations up to 10 kw. The aim of Alusin Solar is maintaining a regular stock in the Aztec country that allows the company to meet the demands quickly enough. The Asturian positioning in America is consolidating since Alusin Solar has another distributor in Chile.