Northampton Solar

Understanding the Old Solar Energy Feed-in Tariff

The concept of a solar energy feed-in tariff (FiT) played a pivotal role in the early adoption and expansion of renewable energy sources, particularly solar power. These tariffs were a form of financial incentive designed to encourage the installation of solar photovoltaic (PV) systems by offering a guaranteed payment for the electricity they generated and fed back into the grid. This article delves into the mechanics of the old solar energy feed-in tariff, its benefits, and its impact on the solar energy market.

What is a Feed-in Tariff?

A feed-in tariff is a policy mechanism designed to accelerate investment in renewable energy technologies. It provides long-term contracts to renewable energy producers, typically based on the cost of generation of each technology. These contracts ensure that producers are paid a fixed price per kilowatt-hour (kWh) for the electricity they feed into the grid over a set period, usually ranging from 10 to 25 years. The payment rates are often higher than the market rate for electricity, reflecting the higher initial costs of renewable energy installations.

The Old Solar Energy Feed-in Tariff Explained

The old solar energy feed-in tariff was specifically targeted at solar PV systems. Under this scheme, individuals and businesses that installed solar panels on their rooftops or premises were paid a predetermined rate for the electricity they generated. This rate was guaranteed for a set number of years, providing a stable and predictable return on investment.

Key features of the old solar energy feed-in tariff included:

  1. Fixed Payment Rates: The tariff rates were often set higher than the retail price of electricity, providing a strong financial incentive for installing solar panels.

  2. Long-term Contracts: Contracts typically lasted between 10 and 25 years, offering long-term financial security to solar PV owners.

  3. Grid Connectivity: The scheme required solar PV systems to be connected to the grid, ensuring that any surplus electricity generated was fed back into the local electricity network.

  4. Cost Recovery: Utilities could recover the cost of the tariffs through slightly higher charges on all consumers’ electricity bills, spreading the financial impact across the entire customer base.

Benefits of the Old Solar Energy Feed-in Tariff

The old solar energy feed-in tariff brought several benefits that significantly contributed to the growth of the solar energy sector:

  1. Market Growth: The attractive financial returns stimulated a rapid increase in solar PV installations, helping to establish a robust solar market.

  2. Technological Advancements: Increased demand and investment drove innovation and efficiency improvements in solar technology, reducing the cost of solar panels and installation over time.

  3. Environmental Impact: By promoting renewable energy, feed-in tariffs helped reduce greenhouse gas emissions and dependence on fossil fuels.

  4. Economic Benefits: The scheme generated jobs in the solar industry, from manufacturing to installation and maintenance.

Impact and Evolution

While the old solar energy feed-in tariff was instrumental in jump-starting the solar energy market, it was not without its challenges. The high cost of the tariffs led to increased electricity prices for consumers, and as the cost of solar technology decreased, the original high tariff rates became less justifiable.

As a result, many regions have since transitioned away from the original feed-in tariff model to other incentive schemes such as:

  • Net Metering: Allows solar panel owners to receive credits on their electricity bill for the power they add to the grid, effectively reducing their electricity costs.

  • Renewable Energy Certificates (RECs): Certificates that can be sold or traded, providing an additional income stream for renewable energy producers.

  • Auction-Based Systems: Competitive bidding processes to determine the price of new renewable energy projects, ensuring cost-effectiveness.


The old solar energy feed-in tariff played a crucial role in the initial growth and development of the solar energy industry. By providing financial incentives and long-term stability, it encouraged widespread adoption of solar PV systems, fostering technological advancements and contributing to environmental sustainability. Though the model has evolved, the foundational impact of the feed-in tariff on the renewable energy landscape remains significant.