diff --git a/tools/Makefile b/tools/Makefile
index a9b0200..ecdc2f8 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -3,6 +3,7 @@
 help:
 	@echo 'Possible targets:'
 	@echo ''
+	@echo '  acpi       - ACPI tools'
 	@echo '  cgroup     - cgroup tools'
 	@echo '  cpupower   - a tool for all things x86 CPU power'
 	@echo '  firewire   - the userspace part of nosy, an IEEE-1394 traffic sniffer'
@@ -33,6 +34,9 @@
 	@echo '    the respective build directory.'
 	@echo '  clean: a summary clean target to clean _all_ folders'
 
+acpi: FORCE
+	$(call descend,power/$@)
+
 cpupower: FORCE
 	$(call descend,power/$@)
 
@@ -54,6 +58,9 @@
 tmon: FORCE
 	$(call descend,thermal/$@)
 
+acpi_install:
+	$(call descend,power/$(@:_install=),install)
+
 cpupower_install:
 	$(call descend,power/$(@:_install=),install)
 
@@ -69,11 +76,14 @@
 tmon_install:
 	$(call descend,thermal/$(@:_install=),install)
 
-install: cgroup_install cpupower_install firewire_install lguest_install \
+install: acpi_install cgroup_install cpupower_install firewire_install lguest_install \
 		perf_install selftests_install turbostat_install usb_install \
 		virtio_install vm_install net_install x86_energy_perf_policy_install \
 	tmon
 
+acpi_clean:
+	$(call descend,power/acpi,clean)
+
 cpupower_clean:
 	$(call descend,power/cpupower,clean)
 
@@ -95,8 +105,8 @@
 tmon_clean:
 	$(call descend,thermal/tmon,clean)
 
-clean: cgroup_clean cpupower_clean firewire_clean lguest_clean perf_clean \
-		selftests_clean turbostat_clean usb_clean virtio_clean \
+clean: acpi_clean cgroup_clean cpupower_clean firewire_clean lguest_clean \
+		perf_clean selftests_clean turbostat_clean usb_clean virtio_clean \
 		vm_clean net_clean x86_energy_perf_policy_clean tmon_clean
 
 .PHONY: FORCE