PR #1264 updated central heating temperatures to current values based on data.
Previously, temperatures were guesstimated compromises between current and future temperatures.
This PR adds the option of decreasing temperatures (forward and return) by a fixed annual percentage (1% by default).

Changes proposed in this Pull Request

• Make build_central_heating_temperature_profiles rule dependent on planning_horizons wildcard`
• Add exponential temperature decay to build_central_heating_profiles.run
• Make build_cop_profiles planning_horizon-dependent
• Make cop_profiles input planning_horizon-dependent for prepare_sector_network, a) add_existing_baseyear, add_brownfield (solve_myopic), add_existing_baseyear/prepare_perfect_foresight (solve_perfect)
• Add update_heat_pump_efficiency() function to myopic/perfect foresight mode to update heat pump efficiencies of existing heat pumps in preceding years

Checklist

• I tested my contribution locally and it works as intended.
• Code and workflow changes are sufficiently documented.
• Changed dependencies are added to envs/environment.yaml.
• Changes in configuration options are added in config/config.default.yaml.
• Changes in configuration options are documented in doc/configtables/*.csv.
• Sources of newly added data are documented in doc/data_sources.rst.
• A release note doc/release_notes.rst is added.

Testing

This config was used:

scenario:
  clusters:
  - 39
  planning_horizons:
  - 2030
  - 2040

countries: ['AL', 'AT', 'BA', 'BE', 'BG', 'CH', 'CZ', 'DE', 'DK', 'EE', 'ES', 'FI', 'FR', 'GB', 'GR', 'HR', 'HU', 'IE', 'IT', 'LT', 'LU', 'LV', 'ME', 'MK', 'NL', 'NO', 'PL', 'PT', 'RO', 'RS', 'SE', 'SI', 'SK', 'XK']

clustering:
  temporal:
    resolution_sector: 168h

Note: testing with perfect foresight requires deactivating the following lines in config.default:

sector:
    DC:
      efficiency_static: 0.98
      efficiency_per_1000km: 0.977

Average forward temperatures in selected countries, with different foresight options:

Average COP: