2.1.1 - Environmental protection

Business damage and pollution

Business production and consumption can impose environmental costs on people who are not part of the sale.

Firms use land, fuel and materials, transport goods and dispose of waste. When these activities harm other people without compensation, they create external costs. A company's private profit does not automatically include the damage suffered by nearby residents. Environmental protection is therefore a government objective even when measured output and employment are growing.

Visual pollution makes surroundings less attractive. A poorly screened waste site can spoil a view, and litter from takeaway packaging can damage streets or beaches. This may reduce residents' enjoyment and discourage visitors, affecting other businesses. Noise pollution from machinery, aircraft or late-night deliveries can disturb sleep, concentration and health. A delivery benefits its buyer and seller while nearby households bear the noise.

Air pollution can result from factory emissions, fuel burning and vehicle exhausts. It can harm health, damage buildings or contribute to wider environmental problems. Water pollution can occur when industrial waste, sewage or agricultural chemicals enter rivers and seas. It can harm aquatic life, contaminate supplies and reduce fishing or tourism income. These forms differ, so an intervention should target the actual harm rather than assume one rule fits every pollutant.

An illustrative riverside textile factory may provide jobs while releasing untreated wastewater. Both consequences matter: identifying a benefit does not erase water pollution, and identifying damage does not prove production has no value. Government intervention seeks to reduce the harm or change incentives so producers consider more of the social cost.

Taxes and cleaner-production subsidies

Changing the financial incentives facing businesses can make polluting activity less attractive and cleaner choices more attractive.

A tax on pollution or a polluting product raises the cost of the harmful activity. A charge per unit of waste discharged makes a firm compare the tax saved by cutting waste with the cost of treatment equipment. A tax on a polluting fuel can encourage users to conserve energy or switch fuel. If producers pass the tax on, a higher consumer price can also reduce demand for the harmful product. The response depends on alternatives and how responsive firms and buyers are; an essential input may continue to be used despite the tax.

A subsidy lowers the cost of a cleaner alternative. Government might contribute to a factory's wastewater-treatment equipment or support low-emission transport. A firm is more likely to adopt the equipment if the subsidy reduces its cost below the expected savings and benefits. Cleaner production can preserve useful output and jobs while reducing pollution, rather than requiring an entire business to close.

Taxes can raise government revenue, but the correct tax level requires evidence about environmental harm and the likely response. Monitoring emissions can be difficult. Subsidies cost public funds that could be used elsewhere, and may pay businesses for changes they would have made anyway. Poorly designed subsidies can also favour politically influential firms rather than the most effective improvements. Choose the target and conditions carefully: subsidising all output from a polluting industry does not automatically make it cleaner.